Liquid Cooling Module, Electronic Device and Accessories

Abstract

Liquid cooling module, electronic device and accessories. The liquid cooling module includes a pump, a liquid cooling module and a working fluid. The liquid cooling module includes a cavity; the working fluid includes a first medium and a second medium, and there is a liquid junction interface between the first medium and the second medium. In the liquid cooling module, the pump is communicated with the cavity; the pump can drive the working fluid in the cavity to flow. During the flowing process, the liquid junction interface of the working fluid moves relative to the cavity, so that the working fluid has a flow visualization effect. The visible light transmittance of at least part of the liquid cooling module is greater than or equal to a threshold value, so that the flow visualization effect of the working fluid can be displayed through this area. The first medium adopted by the liquid cooling module has better heat dissipation performance, and the liquid cooling module has better heat dissipation performance. The liquid cooling module can be embedded in the housing of the electronic device, and at least part of the area of the housing with a visible light transmittance greater than or equal to the threshold value coincides with at least part of the area of the liquid cooling module with a visible light transmittance greater than or equal to the threshold value, so that the electronic device realizes the flow visualization effect.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a liquid cooling module, electronic equipment and accessories. Background Art

[0002] The liquid cooling module may include: a pump and a working substance. The working substance can be understood as a carrier for realizing the mutual conversion of thermal energy and mechanical energy. The pump can serve as a power source for the working substance, providing power for the flow of the working substance. The working substance can serve as a carrier for heat transfer during the flow process, so that the liquid cooling module can achieve the effect of heat dissipation.

[0003] In recent years, the flow of working fluids can be prepared into a visual effect, and a flow display area with a sense of technology can be realized. The working fluids with visible flow states disclosed in the related art include: water and dyes. The presence of dyes can make the working fluid colorable, so that the flow process of the working fluid can present a flow visualization effect.

[0004] The colored working fluid can present a flow visualization effect in a larger liquid cooling module. The liquid cooling module used in electronic equipment is small in size (usually the cavity size of the liquid cooling module is usually in the microliter order), and the flow visualization effect of the working fluid disclosed in the related art in the electronic equipment is poor. Summary of the invention

[0005] The present application discloses a liquid cooling module, an electronic device and accessories. The working fluid of the liquid cooling module includes: a first medium and a second phase. The first medium and the second phase may have a liquid interface, and a pump may provide a flow power for the working fluid. During the flow of the working fluid, the liquid interface of the working fluid moves relative to the cavity, thereby making the working fluid have a flow visualization effect.

[0006] The first aspect of the present application discloses a liquid cooling module, comprising: a pump, a liquid cooling module and a working fluid. The liquid cooling module comprises: a cavity, and the visible light transmittance of at least a part of the liquid cooling module is greater than or equal to a threshold value; the working fluid is filled in the cavity, and the working fluid comprises: a first medium and a second phase. There is a liquid interface between the second phase and the first medium. The pump is connected to the cavity, and is used to drive the working fluid in the cavity to flow, so that the liquid interface of the working fluid moves relative to the cavity.

[0007] In this implementation, the pump is connected to the cavity, and the pump can provide the driving force for the working fluid in the liquid cavity to flow. During the flow of the working fluid, the liquid-liquid interface of the working fluid moves relative to the cavity, thereby enabling the working fluid to have a flow visualization effect. The working fluid is arranged in the cavity of the liquid cooling module, and the visible light transmittance of at least part of the liquid cooling module is greater than or equal to the threshold value, so that the flow visualization effect of the working fluid can be displayed through this area, that is, the liquid cooling module can achieve the visualization effect. In addition, during the flow of the working fluid, the working fluid can serve as a medium for heat transfer, enabling the liquid cooling component to achieve the function of heat dissipation.

[0008] Combined with a feasible implementation of the first aspect, the working fluid further includes: a demulsifier. The demulsifier is used to break the emulsion. When the second phase is dispersed in the first medium in the form of small droplets to form an emulsion (the liquid-liquid interface is destroyed), the demulsifier with the function of breaking the emulsion can promote the aggregation of small droplets, so that the liquid-liquid interface between the first medium and the second phase is restored.

[0009] Combined with an implementation of the first aspect, the first medium includes at least one of water and liquid metal.

[0010] In this implementation, the first medium includes at least one of water (H2O) and liquid metal. H2O and liquid metal have better heat dissipation performance. Using H2O and liquid metal as the first medium can ensure that the working fluid can achieve better heat dissipation performance, enabling the liquid cooling module to achieve good temperature control function.

[0011] Combined with an implementation of the first aspect, the working fluid further includes: a water-soluble dye, and the solubility of the water-soluble dye in the first medium is greater than its solubility in the second phase.

[0012] In this implementation, the working fluid includes a water-soluble dye. The solubility of the water-soluble dye in the first medium is greater than its solubility in the second phase. The introduction of the water-soluble dye can increase the color contrast between the first medium and the second phase, enabling the liquid cooling module to have a significant flow visualization effect.

[0013] Combined with an implementation of the first aspect, at 25 °C, the thermal conductivity of the first medium is greater than or equal to 0.1 W / m·K.

[0014] In this implementation, at 25 °C, the thermal conductivity of the first medium is greater than or equal to 0.1 W / m·K. The first medium has a large thermal conductivity, and the heat absorbed by the first medium per unit length when changing the unit temperature is more, enabling the liquid cooling module to achieve better temperature control function.

[0015] Combined with an implementation of the first aspect, at 25 °C, the specific heat capacity of the first medium is greater than or equal to 1000 J / kg·°C.

[0016] In this implementation manner, at 25°C, the specific heat capacity of the first medium is greater than or equal to 1000 J / kg·°C. The first medium has a relatively large specific heat capacity. When the unit mass of the first medium changes by one unit of temperature, it absorbs more heat, and the liquid cooling module can achieve a better temperature control function.

[0017] Combined with an implementation manner of the first aspect, at 25°C, the viscosity of the first medium is less than or equal to 50 cp.

[0018] In this implementation manner, at 25°C, the viscosity of the first medium is less than or equal to 50 cp. The first medium has a relatively small viscosity, and the resistance it encounters during the flow process is small. The first medium can transfer more heat per unit time, and the working fluid can achieve a better temperature control function.

[0019] Combined with an implementation manner of the first aspect, the mass fraction of the first medium is greater than or equal to 80%.

[0020] In this implementation manner, the mass fraction of the first medium is greater than or equal to 80%, that is, the working fluid contains more of the first medium. The first medium has better heat dissipation performance, ensuring that the working fluid can achieve better heat dissipation performance, and the liquid cooling module can achieve a good temperature control function.

[0021] Combined with an implementation manner of the first aspect, the second phase includes: at least one second medium.

[0022] In this implementation manner, the second phase includes at least one second medium, and each second medium can form a liquid-liquid interface with the first medium, making the flow of the working fluid visible.

[0023] Combined with an implementation manner of the first aspect, at least two second media are miscible.

[0024] Combined with an implementation manner of the first aspect, there is a liquid-liquid interface between any two second media.

[0025] In this implementation manner, there is a liquid-liquid interface between any two second media. Accordingly, the working fluid has more liquid-liquid interfaces and a significant flow visualization effect.

[0026] Combined with an implementation manner of the first aspect, it further includes: an organic dye, and the solubility of the organic dye in the second medium is greater than the solubility of the organic dye in the first medium.

[0027] In this implementation manner, the working fluid may further include: an organic dye. The solubility of the organic dye in the second medium is greater than the solubility of the organic dye in the first medium. The introduction of the organic dye can increase the color contrast between the first medium and the second phase, making the working fluid have a significant flow visualization effect.

[0028] In an implementation manner combining the first aspect, the working fluid further includes: a drag reducer; the drag reducer is used to reduce the flow resistance of the first medium.

[0029] In this implementation manner, the working fluid may include: a drag reducer. The drag reducer can reduce the flow resistance of the first medium, so that more heat is transferred per unit time of the working fluid, and the liquid cooling module can achieve a good temperature control function.

[0030] In an implementation manner combining the first aspect, the drag reducer includes at least one of: polyalpha-olefin, polymethacrylate, polyacrylamide, polyethylene oxide, polyalpha-octene, polyalpha-decene, cationic polyacrylamide.

[0031] The above drag reducer can reduce the flow resistance of the first medium, increase the flow rate of the working fluid under the same pump performance, transfer more heat per unit time of the working fluid, and enable the liquid cooling module to achieve a good temperature control function.

[0032] In an implementation manner combining the first aspect, the relative molecular mass of the drag reducer is greater than or equal to 2*10 5 .

[0033] In this implementation manner, the relative molecular mass of the drag reducer can be greater than or equal to 5*10 5 , the drag reducer has a relatively large relative molecular mass, the drag reducer has a long molecular chain, the drag reducer has a large flexibility, the drag reducer can minimize the flow resistance generated during the flow of the first medium, increase the flow rate of the working fluid under the same pump performance, so that more heat can be transferred per unit time of the first medium, thereby improving the heat dissipation performance of the working fluid and ensuring that the liquid cooling module can achieve a good temperature control function.

[0034] In an implementation manner combining the first aspect, the demulsifier includes at least one of: sodium alkyl naphthalene sulfonate, sodium petroleum sulfonate, naphthenate, polyethylene oxide-polypropylene oxide copolymer, organic alcohol, organic ketone.

[0035] In this implementation manner, the demulsifier includes at least one of: sodium alkyl naphthalene sulfonate, sodium petroleum sulfonate, naphthenate, polyethylene oxide-polypropylene oxide copolymer, organic alcohol, organic ketone. The demulsifier can break the emulsion formed by the second phase and the first medium, and then restore the liquid junction interface between the first medium and the second phase, so that the working fluid has a stable liquid junction interface, and the liquid cooling module can have a stable flow visualization effect.

[0036] In an implementation manner combining the first aspect, the molecular structural formula of sodium alkyl naphthalene sulfonate includes:

[0037] R includes: a hydrophobic group.

[0038] In this implementation, the molecular structural formula of sodium alkylnaphthalene sulfonate includes: (SO3Na-), such that the binding ability of sodium alkylnaphthalene sulfonate to the first medium is stronger than that of the second medium to the first medium. When the second medium is dispersed in the first medium in the form of small droplets to form an emulsion, the first medium preferentially binds to SO3Na-, resulting in a reduction in the thickness of the hydration layer on the surface of the small droplets, and the small droplets tend to aggregate with each other to restore the liquid-liquid interface with the first medium.

[0039] In addition, the molecular structural formula of sodium alkylnaphthalene sulfonate includes: a naphthalene ring The naphthalene ring has a large rigidity, which in turn ensures that the demulsifier has a large rigidity. When the second phase is emulsified with the first medium, the second phase is dispersed in the first medium in the form of small droplets. Due to the large rigidity of the demulsifier, the demulsifier can reach the surface of the small droplets relatively quickly, enabling the small droplets to break away from the restraint of the first medium and aggregate with each other to form the second phase, that is, the demulsifier has a relatively fast demulsification efficiency, and the working fluid can quickly restore the liquid-liquid interface.

[0040] Combined with an implementation of the first aspect, the molecular structural formula of naphthenate includes:

[0041] where n is from 3 to 12.

[0042] In this implementation, it has a carboxyl group (-COO-), and the binding ability of -COO- to water is stronger than that of the second medium to water. Therefore, it can be used as a demulsifier. In addition, the molecular structural formula of naphthenate includes: a naphthenyl group The naphthenyl group has a large rigidity, such that naphthenate can have a large rigidity. During emulsification, the demulsifier can reach the surface of the small droplets relatively quickly, realizing the demulsification function, and ensuring that the emulsified working fluid can quickly restore the liquid-liquid interface.

[0043] Combined with an implementation of the first aspect, the molecular structural formula of organic alcohol includes:

[0044] at least one of

[0045] In this implementation, the molecular structural formula of organic alcohol includes: a hydroxyl group (-OH), and the binding ability of the hydroxyl group to water is stronger than that of the second medium to water. Therefore, organic alcohol can be used as a demulsifier. In addition, the molecular structural formula of organic alcohol can include: having a symmetric molecular structural formula, such that the demulsifier has a large rigidity, which in turn ensures that the demulsifier has a relatively fast demulsification efficiency, and ensures that the emulsified working fluid can quickly restore the liquid-liquid interface.

[0046] Combined with an implementation of the first aspect, the molecular structural formula of organic ketone includes: at least one of

[0047] In this implementation, the molecular structural formula of the organic ketone includes: a carbonyl group (-C=O), and the binding ability of -C=O with water is stronger than that of the second medium with water. Therefore, the organic ketone can be used as a demulsifier. Additionally, the molecular structural formula of the organic ketone may include: Having a symmetric molecular structural formula, which gives the demulsifier greater rigidity, thereby ensuring that the demulsifier has a faster demulsification efficiency and ensuring that the emulsified working medium can quickly restore the liquid junction interface.

[0048] Combined with one implementation of the first aspect, the hydrophilic-lipophilic balance value of the demulsifier is between 1 and 20.

[0049] In this implementation, the hydrophilic-lipophilic balance value of the demulsifier is between 1 and 20, enabling the demulsifier to be present at the liquid junction interface between the first medium and the second phase. The demulsifier can play a role in stabilizing the liquid junction interface, ensuring that the liquid cooling module has a stable flow visualization effect.

[0050] Combined with one implementation of the first aspect, the liquid cooling module includes: a flow channel layer and at least two covering layers. One covering layer is disposed on one side of the flow channel layer, and the other covering layer is disposed on the other side of the flow channel layer. The covering layer and the flow channel layer enclose to form a cavity, and the visible light transmittance of at least one covering layer is greater than or equal to a threshold value.

[0051] Combined with one implementation of the first aspect, the difference between the melting temperature of the flow channel layer and the melting temperature of the covering layer is less than or equal to 20 °C.

[0052] In this implementation, the difference between the melting temperature of the covering layer and the melting temperature of the flow channel layer is less than or equal to 20 °C, and the difference between the melting temperatures of the covering layers is relatively small, which is beneficial for the covering layer and the flow channel layer to be thermally pressed and sealed into an integral structure cavity, ensuring that the cavity has a good sealing effect.

[0053] Combined with one implementation of the first aspect, the difference between the thermal expansion coefficient of the flow channel layer and the thermal expansion coefficient of the covering layer is less than or equal to 10*10 -6 / °C.

[0054] In this implementation, the difference between the thermal expansion coefficient of the flow channel layer and the thermal expansion coefficient of the covering layer is less than or equal to ≤10*10 -6 / °C. The difference between the thermal expansion coefficient of the flow channel layer and the thermal expansion coefficient of the covering layer is relatively small, which can, to a certain extent, reduce the warping of the flow channel layer and the covering layer during the sealing welding process, ensuring that the cavity formed by the covering layer and the flow channel layer has a good sealing effect.

[0055] Combined with one implementation of the first aspect, the thickness of the covering layer is less than or equal to 2 mm.

[0056] In this implementation, on the one hand, a cladding thickness less than or equal to 2 mm can achieve a lightweight liquid cooling module. On the other hand, the cladding has less obstruction to the working fluid, enabling a liquid cooling module with a significant flow visualization effect.

[0057] Combined with an implementation of the first aspect, the transparent material includes at least one of: inorganic glass, polyethylene terephthalate, polyethylene naphthalate, polypropylene, cycloolefin copolymer, poly (tetramethylpentene), polyimide, polymethyl methacrylate, polyphenylene sulfide, polyether ether ketone, styrene-acrylonitrile copolymer, acrylonitrile-butadiene-styrene copolymer, butadiene-styrene copolymer.

[0058] In this implementation, at least part of the liquid cooling module is made of the above-mentioned transparent material, so that the cladding has a high visible light transmittance, ensuring that the liquid cooling module can achieve a significant flow visualization effect.

[0059] Combined with an implementation of the first aspect, the molecular structural formula of the transparent material includes:

[0060] at least one of;

[0061] where n is between 100 and 200; where n is between 100 and 200.

[0062] In this implementation, the molecular structural formula of the transparent material contains: an ether bond (-O-), and the ether bond can disrupt the conjugated structure of the benzene ring in the molecular structural formula, enabling the transparent material to have a high visible light transmittance and allowing the liquid cooling module to achieve a significant flow visualization effect.

[0063] Combined with an implementation of the first aspect, the molecular structural formula of the transparent material includes:

[0064] at least one of;

[0065] where n is between 240 and 340; where n is between 200 and 300.

[0066] In this implementation, the molecular structural formula of the transparent material includes: at least one of, and the transparent material has a high visible light transmittance, enabling the liquid cooling module to achieve a relatively significant flow visualization effect.

[0067] Combined with an implementation of the first aspect, it further includes: an anti-evaporation layer, the anti-evaporation layer is disposed on the surface of the cladding, the visible light transmittance of the anti-evaporation layer is greater than or equal to a threshold value, and the density of the anti-evaporation layer is greater than the density of the cladding.

[0068] In this implementation, an anti-evaporation layer is provided on the surface of the covering layer. The density of the anti-evaporation layer is greater than that of the covering layer. The anti-evaporation layer can reduce the evaporation loss of the working fluid, thereby ensuring the long-term reliability of the liquid cooling module. At the same time, the visible light transmittance of the anti-evaporation layer is greater than or equal to the threshold value, thereby ensuring the flow visualization effect of the liquid cooling module.

[0069] A second aspect of the present application discloses an electronic device, including: a housing and the liquid cooling module disclosed in the first aspect; the liquid cooling module is embedded in the housing, and the visible light transmittance of at least part of the housing is greater than or equal to the threshold value. The area where the visible light transmittance of the housing is greater than or equal to the threshold value coincides at least partially with the area where the visible light transmittance of the liquid cooling module is greater than or equal to the threshold value.

[0070] The effects achievable by any feasible implementation of the second aspect can refer to the effects achievable by any feasible implementation of the first aspect above, and will not be elaborated here.

[0071] A third aspect of the present application discloses a fitting, which is applicable to an electronic device, including: a fitting body and the liquid cooling module disclosed in the first aspect, and the liquid cooling module is embedded in the fitting body; the area where the visible light transmittance of the fitting body is greater than or equal to the threshold value coincides at least partially with the area where the visible light transmittance of the liquid cooling module is greater than or equal to the threshold value.

[0072] The effects achievable by any feasible implementation of the third aspect can refer to the effects achievable by any feasible implementation of the first aspect above, and will not be elaborated here. Description of the Drawings

[0073] Figure 1 It is a schematic diagram of an electronic device;

[0074] Figure 2 It is an exploded view of a battery;

[0075] Figure 3 It is a schematic diagram of the working fluid disclosed in a feasible embodiment (the working fluid is filled in the cavity);

[0076] Figure 4 It is a schematic diagram of the emulsified working fluid (the working fluid is filled in the cavity);

[0077] Figure 5 It is a schematic diagram of the working fluid adhering to the wall (the working fluid is filled in the cavity);

[0078] Figure 6 It is a schematic diagram of the liquid cooling module disclosed in a feasible embodiment;

[0079] Figure 7 It is a relationship curve between the flow rate and impedance of the liquid cooling module;

[0080] Figure 8 Schematic diagram of a mobile phone disclosed in a feasible embodiment;

[0081] Figure 9 Schematic diagram of a tablet computer disclosed in a feasible embodiment;

[0082] Figure 10 Schematic diagram of a notebook computer disclosed in a feasible embodiment;

[0083] Figure 11 Schematic diagram of a vehicle-mounted device disclosed in a feasible embodiment;

[0084] Figure 12 Cross-sectional view of a mobile display area disclosed in a feasible embodiment;

[0085] Figure 13 Schematic diagram of a protective case disclosed in a feasible embodiment;

[0086] Figure 14 Assembly diagram of a wearable device and a wristband disclosed in a feasible embodiment;

[0087] Figure 15 Assembly diagram of a tablet computer and a protective case disclosed in a feasible embodiment;

[0088] Figure 16 Assembly diagram of a mobile phone and a connector disclosed in a feasible embodiment. Detailed implementation manners

[0089] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0090] In this article, terms such as "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0091] In addition, in this article, orientation terms such as "upper" and "lower" are defined relative to the orientation of the structural schematic diagram in the accompanying drawings. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and they may change accordingly with the change of the orientation where the structure is placed.

[0092] First, the concepts related to the embodiments of the present application will be described:

[0093] Surface tension: Liquids such as water generate a force that minimizes the surface area. The wall adhesion phenomenon of a liquid is related to its surface tension. The greater the surface tension of the liquid, the more prominent the wall adhesion phenomenon.

[0094] Emulsification is the process in which one liquid is uniformly dispersed in another immiscible liquid in the form of extremely fine droplets.

[0095] The melting temperature is the temperature at which melting occurs and can also be referred to as the melting point.

[0096] The coefficient of thermal expansion (CET): When an object's temperature changes, it expands or contracts. Its ability to change is represented by the coefficient of thermal expansion, which is the change in the length value per unit temperature change under constant pressure (p constant), with the unit of 1 / °C.

[0097] Visible light can be understood as light waves with wavelengths ranging from 380 nm to 760 nm.

[0098] Visible light transmittance is the ratio of the radiant energy that is projected and transmitted through an object to the total radiant energy projected onto the object.

[0099] The hydrophilic group, also known as the polar group, is an atomic group that is soluble in water or easily forms an affinity with water.

[0100] The hydrophobic group (lipophilic group or oelophilic group), also known as the non-polar group, has no affinity for water and is insoluble in water or has extremely low solubility.

[0101] The hydrophilic-lipophilic balance (HLB) can be understood as the comprehensive affinity of the hydrophilic and lipophilic groups in the surfactant (auxiliary) molecule for oil or water.

[0102] The mass fraction of the medium can be understood as the mass ratio of the medium to the working medium.

[0103] The electronic devices involved in the embodiments of this application may include, but are not limited to: electronic products such as mobile phones, tablets, laptop computers, and wearable devices.

[0104] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an electronic device (mobile phone). It can be seen that the electronic device 1 includes: a housing 20 and electronic functional components (not shown in the figure).

[0105] Wherein, a housing is enclosed to form a cavity for accommodating electronic functional components, and the housing encloses the electronic functional components to protect the electronic functional components.

[0106] In the embodiments of the present application, the electronic device may include: a folding device or a straight plate device. Taking the electronic device as a folding device as an example, the housing of the electronic device will be described below:

[0107] Please refer to Figure 1 , the housing 20 of the electronic device may include: a first non-folding portion 21 and a second non-folding portion 22. The first non-folding portion 21 and the second non-folding portion 22 are connected by a folding portion 23. The second non-folding portion 22 can be folded towards the first non-folding portion 21 through the folding portion 23. The second non-folding portion 22 is unfolded from the first non-folding portion 21 through the folding portion 23.

[0108] The electronic functional components of the electronic device 1 include but are not limited to: a processor, an internal memory, a charging management module, a power management module, a battery, an antenna, a communication module, a camera, an audio module, a speaker, a receiver, a microphone, a sensor module, a motor, and an indicator, etc. Among them, the electronic device 1 may have more or fewer electronic functional components than those described above. Various electronic functional components may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and / or application specific integrated circuits.

[0109] When the electronic functional components are in a working state, heat will be released. When the temperature inside the electronic device 1 is too high, it will affect the working efficiency of the electronic functional components and the service life of the electronic device 1. Therefore, a liquid cooling module 10 needs to be provided to control the temperature rise of the electronic functional components.

[0110] Based on the above considerations, in some feasible implementation manners, the liquid cooling module 10 is embedded in the housing 20 to control the temperature of the electronic functional components arranged in the area defined by the housing.

[0111] Exemplarily, please continue to refer to Figure 1 , it can be seen that the liquid cooling module 10 is located inside the housing 20 (the liquid cooling module 10 is actually invisible inside the electronic device 1, and a visible schematic treatment is made for easy understanding). The liquid cooling module 10 embedded in the housing can control the temperature of the electronic functional components.

[0112] The following is an explanation of the disclosed solution of the present application:

[0113] The electronic devices involved in the embodiments of the present application may include but are not limited to: electronic products such as mobile phones, tablet computers, laptop computers, wearable devices, and vehicle-mounted devices.

[0114] Please refer to Figure 1 ,Figure 1 It can be seen that the electronic device includes: a housing 20 and electronic function components (not shown in the figure) located inside the housing 20. In the embodiments of the present application, the electronic device can be a folding device or a straight plate device.

[0115] Exemplarily, please refer to Figure 1 , and take a folding mobile phone as an example to further illustrate the housing. The housing 20 can include a cavity for accommodating electronic function components (not shown in the figure). The housing 20 of the folding mobile phone can include: a first non-folding part 21 and a second non-folding part 22. The first non-folding part 21 and the second non-folding part 22 are connected by a folding part 23. The second non-folding part 22 can be folded towards the first non-folding part 21 through the folding part 23. The second non-folding part 22 is unfolded from the first non-folding part 21 through the folding part 23.

[0116] The electronic function components of the electronic device 1 include but are not limited to: a processor, an internal memory, a charging management module, a power management module, a battery, an antenna, a communication module, a camera, an audio module, a speaker, a receiver, a microphone, a sensor module, a motor, and an indicator, etc. Among them, the electronic device 1 can have more or fewer electronic function components than those described above. Various electronic function components can be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and / or application specific integrated circuits.

[0117] The electronic function components will release heat when in a working state. When the temperature inside the electronic device 1 is too high, it will affect the working efficiency of the electronic function components and the service life of the electronic device 1. Therefore, it is necessary to set up a liquid cooling module 10 to control the temperature rise of the electronic function components.

[0118] Based on the above considerations, in some feasible implementation manners, the liquid cooling module 10 is located between the housing 20 and the electronic function components to achieve the control of the temperature of the electronic function components. Exemplarily, please continue to refer to Figure 1 , it can be seen that the liquid cooling module 10 is located on the side of the housing 20 adjacent to the electronic function components. The liquid cooling module 10 can achieve the control of the temperature of the electronic function components.

[0119] In some feasible implementation manners, the liquid cooling module 10 can be used as a part of the encapsulation of the electronic function components, thereby achieving the control of the temperature of the electronic function components. Exemplarily, please refer to Figure 2 , Figure 2 is an exploded view of the battery. The battery 30 can include a guard plate 31, a tray 32, a battery cell 33, and a liquid cooling module 10 stacked in sequence. The liquid cooling module 10, as a part of the battery, can control the temperature of the battery.

[0120] The temperature control function of the liquid cooling module 10 will be described below:

[0121] Please continue reading Figure 1 The liquid cooling module 10 may include: a liquid cooling module 100, a pump 200 and a working medium (not shown in the figure). The working medium is filled in the cavity of the liquid cooling module 100. The pump 200 is connected to the cavity of the liquid cooling module 100, and the pump 200 can be used as a power source for the working medium in the liquid cooling module 100 to provide power for the flow of the working medium.

[0122] During the flow process, the working fluid can act as a carrier of heat transfer, taking the heat away from the electronic functional components, thereby achieving temperature control of the electronic functional components.

[0123] In the embodiment of the present application, the cavity of the liquid-cooling module 100 provides a flow track / place for the flow of the working fluid, so in the embodiment of the present application, the cavity of the liquid-cooling module 100 can be called a flow channel.

[0124] The embodiment of the present application does not specifically limit the type of pump 200. In some feasible implementation methods, the pump 200 can adopt a miniature piezoelectric liquid pump. The miniature piezoelectric liquid pump has an amplitude of ≤50um, is ultra-thin, small in size, simple in structure, has high pressure and low flow, no electromagnetic interference, and has low working noise. It can realize precise fluid delivery and control, and is particularly suitable for electronic devices such as mobile phones, watches, and accessories.

[0125] Some related technologies prepare the flow of the working fluid into a visual effect, which can realize a flow display area with a sense of technology. The flow display area can play the role of identifying the device or beautifying the shell to enhance the user's experience of using the electronic device.

[0126] At present, the method for realizing visualization of the working fluid flow in the liquid cooling module 10 is: a transparent liquid cooling module 100 is matched with a working fluid with flow visualization, that is, a light-transmitting treatment is performed in the area of ​​the shell 20 where the flow visualization effect needs to be displayed, so that the visualization effect of the working fluid arranged inside the shell can be displayed, and a flow visualization area with a sense of technology is formed in the area with light-transmitting treatment.

[0127] The working fluids with visible flow states disclosed in the related art include: water and dyes. Since the presence of the dyes can make the working fluid colorful, the flow process of the working fluid can present a flow visualization effect.

[0128] The colored working fluid can present a flow visualization effect in a larger liquid cooling module 10. The liquid cooling module 10 used in electronic equipment is relatively small in size (usually the cavity size of the liquid cooling module 10 is generally in the microliter order), and the flow visualization effect of the working fluid disclosed in the related art in the electronic equipment is relatively poor.

[0129] To solve the technical problems existing in related technologies, please refer to Figure 3, in the first aspect of the embodiments of the present application, a working fluid is disclosed. The working fluid 300 includes: a first medium 301 and a second phase 302. There is a liquid junction interface A between the first medium 301 and the second phase 302. During the movement of the working fluid, the liquid junction interface A will move relative to the cavity B for accommodating the working fluid, so that the working fluid 300 has the effect of flow visualization.

[0130] The following further describes the components of the working fluid disclosed in the embodiments of the present application:

[0131] The working fluid disclosed in the embodiments of the present application includes: a first medium. On the one hand, the first medium has better heat dissipation performance, ensuring that the working fluid can achieve better temperature control function; on the other hand, the first medium needs to form a liquid junction interface with the second phase to ensure that the working fluid can achieve the function of flow visualization.

[0132] As a feasible implementation, the mass fraction of the first medium in the working fluid is greater than or equal to 80%. Exemplarily, the mass fraction of the first medium in the working fluid may include: 85%, 90%, 95%, etc.

[0133] In this implementation, the mass fraction of the first medium in the working fluid is greater than or equal to 80%, that is, the working fluid contains more first medium (the first medium has better heat dissipation performance), ensuring that the working fluid can achieve better heat dissipation performance, and the working fluid absorbs more heat when changing unit temperature, so the working fluid can achieve better temperature control function.

[0134] The embodiments of the present application do not specifically limit the types of media included in the first medium. Any medium with better heat dissipation performance and capable of forming a liquid junction interface with the second phase can be used as the first medium in the embodiments of the present application.

[0135] Exemplarily, in some feasible implementations, the first medium may include: water (H2O), liquid metal, etc.

[0136] In the embodiments of the present application, H2O and liquid metal have better heat dissipation performance. Using H2O and liquid metal as the first medium can enable the working fluid to achieve better heat dissipation performance and ensure that the working fluid can achieve better temperature control function.

[0137] The working fluid in the embodiments of the present application may further include: water-soluble salt. The solution formed by the water-soluble salt and water (the first medium) can be called a salt solution.

[0138] The salt solution may include: anions and cations. Both anions and cations have strong hydrophilic properties. So that anions can form hydrated anions with H2O, and cations can form hydrated cations with H2O. That is, H2O tends to combine with cations / anions.

[0139] When the second phase is dispersed in H2O in the form of small droplets to form an emulsion, H2O preferentially binds to cations and anions, resulting in a reduction in the thickness of the hydration layer on the surface of the small droplets. The small droplets tend to aggregate with each other to form the second phase, thereby restoring the liquid junction interface between the first medium and the second phase. Therefore, the working fluid disclosed in this implementation has a stable liquid junction interface, and the liquid cooling module using this working fluid can have a stable flow visualization effect.

[0140] The embodiments of the present application do not specifically limit the color of the above-mentioned salt solution. In a feasible implementation, the salt solution can be a colorless solution.

[0141] In the embodiments of the present application, the colorless solution can include: H2O (solvent) and a colorless salt (solute). Among them, the colorless salt can be understood as a salt whose aqueous solution is colorless. Exemplarily: the colorless salt can include but is not limited to: sodium chloride (NaCl), magnesium chloride (MgCl2), calcium chloride (CaCl2) solution, aluminum nitrate (Al(NO3)4), etc.

[0142] In order to further improve the flow visualization effect of the working fluid, as a feasible implementation, the salt solution can include: a colored solution.

[0143] In the embodiments of the present application, the colored solution can include: H2O and a colored salt. Among them, the colored salt can be understood as a salt whose aqueous solution shows color. Exemplarily, the colored salt can include but is not limited to: copper sulfate (CuSO4), copper chloride (CuCl2), copper nitrate (Cu(NO3)2), ferrous sulfate (FeSO4), ferrous chloride (FeCl2), ferrous nitrate (Fe(NO3)2), ferric sulfate (Fe2(SO4)3), ferric chloride (FeCl3), ferric nitrate (Fe(NO3)3), potassium permanganate (KMnO4), cobalt chloride (CoCl2·n(H2O)), cobalt sulfate (CoSO4), cobalt nitrate (Co(NO3)2), nickel chloride (NiCl2), nickel sulfate (NiSO4), nickel nitrate (Ni(NO3)2), etc.

[0144] The colored salt can change the color of the first medium. Therefore, in the embodiments of the present application, the colored salt can also be referred to as a water-soluble dye or an inorganic dye.

[0145] In this implementation, the working fluid includes: a water-soluble dye. The solubility of the water-soluble dye in the first medium is greater than that in the second phase. The water-soluble dye can make the first medium show color. The introduction of the water-soluble dye can make the first medium and the second phase have a large color contrast, so that the working fluid can have a significant flow visualization effect.

[0146] The performance of the first medium will be further described below:

[0147] The heat dissipation performance can be understood as the heat absorbed or released by a medium when changing a unit temperature. The better the heat dissipation performance of the medium, the more heat is absorbed or released by the medium when changing a unit temperature, and the more significant the temperature control effect of the medium.

[0148] The thermal conductivity can be understood as the heat transferred when the temperature difference between the two surfaces of the medium (area: 1 m 2 , thickness: 1 m) is 1 °C (or K) under stable heat transfer conditions (for example: the pressure P is constant, the temperature T is constant). The higher the thermal conductivity of the medium, the more heat is absorbed when the first medium of unit length changes a unit temperature, and the more significant the temperature control effect of the corresponding working fluid.

[0149] As a feasible implementation method, in a 25 °C environment, the thermal conductivity of the first medium is greater than or equal to 0.1 W / m·K. Exemplarily, in a 25 °C environment, the thermal conductivity of the first medium can be: 0.1 W / m·K, 0.2 W / m·K, 0.3 W / m·K, etc.

[0150] It should be noted that the thermal conductivity of the first medium is not a fixed value. Temperature will affect the thermal conductivity of the first medium. Specifically, an increase in temperature will intensify the molecular thermal motion of the first medium, enabling the heat-conducting medium to transfer more heat, that is, the thermal conductivity of the first medium increases as the temperature rises. Unless otherwise specified, the thermal conductivity involved in the embodiments of the present application can be understood as the thermal conductivity of the first medium at 25 °C.

[0151] In this implementation method, in a 25 °C environment, the thermal conductivity of the first medium is greater than or equal to 0.1 W / m·k. The first medium has a relatively large thermal conductivity, and the heat absorbed when the first medium of unit length changes a unit temperature is relatively large, and the working fluid can achieve a better temperature control function.

[0152] The specific heat capacity can be understood as the heat capacity of the first medium per unit mass. The higher the specific heat capacity of the first medium, the more heat is absorbed when the first medium of unit mass changes a unit temperature, and the more significant the temperature control function of the corresponding working fluid.

[0153] It should be noted that the specific heat capacity of the first medium is affected by temperature. Unless otherwise specified, the specific heat capacity involved in the embodiments of the present application can be understood as the specific heat capacity of the first medium at 25 °C.

[0154] To ensure the temperature control function of the working fluid, as a feasible implementation method, in a 25°C environment, the specific heat capacity of the first medium is greater than or equal to 1000 J / kg·°C. Exemplarily, in a 25°C environment, the specific heat capacity of the first medium can be: 1000 J / kg·°C, 1500 J / kg·°C, 1500 J / kg·°C, etc.

[0155] In this implementation method, in a 25°C environment, the specific heat capacity of the first medium is greater than or equal to 1000 J / kg·°C. The first medium has a relatively large specific heat capacity. When the unit mass of the first medium changes by a unit temperature, the absorbed heat is relatively large, and the working fluid can achieve a better temperature control function.

[0156] Viscosity can be understood as the resistance exhibited by the first medium to flow. Specifically applied to the embodiments of the present application, the smaller the viscosity of the first medium, the smaller the resistance suffered by the first medium during the flow process, the more heat transferred by the first medium per unit time, and the more significant the temperature control function of the working fluid.

[0157] It should be noted that the viscosity of the first medium is affected by temperature. Unless otherwise specified, the viscosity involved in the embodiments of the present application can be understood as the viscosity of the first medium at 25°C.

[0158] As a feasible implementation method, in a 25°C environment, the viscosity of the first medium can be less than or equal to 50 cp. Exemplarily, in a 25°C environment, the viscosity of the first medium can be: 50 cp, 40 cp, 30 cp, 20 cp, 10 cp, etc.

[0159] In this implementation method, in a 25°C environment, the viscosity of the first medium is less than or equal to 50 cp. The first medium has a relatively small viscosity, the resistance suffered by the first medium during the flow process is relatively small, the first medium can transfer more heat per unit time, and the working fluid can achieve a better temperature control function.

[0160] Thus, the description of the first medium is completed.

[0161] The working fluid disclosed in the embodiments of the present application further includes: a second phase.

[0162] In the embodiments of the present application, the second phase is used to form a liquid junction interface with the first medium, so that the working fluid can achieve a flow visualization effect. In the embodiments of the present application, the medium included in the second phase can be called the second medium.

[0163] The embodiments of the present application do not specifically limit the second medium. Any medium that can form a liquid junction interface with the first medium can be used as the second medium in the embodiments of the present application. Exemplarily, the second medium may include, but is not limited to: hydrocarbon, heterocyclic compound, fluorinated liquid, quicksand oil, etc.

[0164] The embodiments of the present application do not specifically limit the quantity of the second medium contained in the second phase. Exemplarily, the quantity of the second medium contained in the second phase may be: 1, 2, 3, etc.

[0165] The embodiments of the present application do not specifically limit the dissolution situation among the second media.

[0166] In some feasible implementation manners: at least two second media are mutually soluble.

[0167] Exemplarily, the second phase may include: hydrocarbon and heterocyclic compound, wherein, the hydrocarbon and the heterocyclic compound being mutually soluble can form a homogeneous phase (the second phase).

[0168] Exemplarily, the second phase may include: hydrocarbon, heterocyclic compound and quicksand oil. The hydrocarbon and the heterocyclic compound can be mutually soluble to form a mixed organic liquid. A liquid junction interface is formed between the quicksand oil and the mixed organic liquid (not mutually soluble).

[0169] In some feasible implementation manners, a liquid junction interface exists between any two second media.

[0170] Exemplarily, the second phase may include: fluorinated liquid and quicksand oil. The fluorinated liquid and the quicksand oil can form a liquid junction interface.

[0171] It should be noted that the embodiments of the present application only exemplarily introduce the dissolution situations among several second media, and the above examples do not constitute specific limitations.

[0172] In some feasible implementation manners, the molecular structural formula of the hydrocarbon may include:

[0173] CH3-(CH2)n-CH3, etc.

[0174] Considering that the stability of the liquid junction interface is related to the solubility of the second medium in the first medium. Specifically, the larger the relative molecular mass of the second medium, the lower the solubility of the hydrocarbon in the first medium, the more stable the liquid junction interface between the second medium and the first medium, and the more stable the visualization effect of the working medium flow.

[0175] To obtain a working fluid with a stable flow visualization effect, as a feasible implementation method, n in CH3-(CH2)n-CH3 can be greater than or equal to 5.

[0176] In this implementation method, n in CH3-(CH2)n-CH3 is greater than or equal to 5. The solubility of the hydrocarbon in the first medium is small, and the hydrocarbon and the first medium can form a stable liquid junction interface, ensuring that the working fluid can achieve a stable flow visualization effect.

[0177] Considering that the stability of the liquid junction interface is related to the boiling point of the second medium. Specifically, the larger the relative molecular mass of the second medium, the higher the boiling point of the second medium, the better the thermal stability of the second medium, the more stable the liquid junction interface between the second medium and the first medium, and the more stable the flow visualization effect of the working fluid.

[0178] To obtain a working fluid with a stable flow visualization effect, as a feasible implementation method, n in CH3-(CH2)n-CH3 can be greater than or equal to 5.

[0179] In this implementation method, n in CH3-(CH2)n-CH3 is greater than or equal to 5. The boiling point of the hydrocarbon is relatively high, and the hydrocarbon and the first medium can form a stable liquid junction interface, ensuring that the working fluid can have a stable flow visualization effect.

[0180] Considering that the heat dissipation performance of the second medium is related to the viscosity of the second medium. Specifically, the smaller the relative molecular mass of the second medium, the lower the viscosity of the second medium, and the better the heat dissipation performance of the second medium.

[0181] To further improve the temperature control function in the working fluid, as a feasible implementation method, in CH3-(CH2)n-CH3, n can be less than or equal to 11.

[0182] In this implementation method, n in CH3-(CH2)n-CH3 is less than or equal to 11. The hydrocarbon has a relatively small viscosity, and the resistance suffered by the working fluid containing the hydrocarbon during the flow process is small. The working fluid transfers more heat per unit time, and the working fluid can achieve a better temperature control function.

[0183] To balance the stable flow visualization effect and the better temperature control function of the working fluid, as a feasible implementation method, n in CH3-(CH2)n-CH3 can be between 5 and 11.

[0184] Similarly, as a feasible implementation method, in, n can be greater than or equal to 5. As a feasible implementation method, n can be less than or equal to 11. As a feasible implementation method, n can be in the range of 5 to 11.

[0185] Similarly, as a feasible implementation method, in, n can be greater than or equal to 0. As a feasible implementation method, in, n can be less than or equal to 5. As a feasible implementation method, in, n can be in the range of 0 to 5.

[0186] Similarly, as a feasible implementation method, in, n can be greater than or equal to 0. As a feasible implementation method, in, n can be less than or equal to 5. As a feasible implementation method, in, n can be in the range of 0 to 5 to balance the visualization effect of the stable flow of the working fluid and the better temperature control function.

[0187] In some feasible implementation methods, the molecular structural formula of the heteroatom compound may include:

[0188] etc.

[0189] In this implementation method, the molecular structural formula of the heteroatom compound (the second medium) includes: a benzene ring The benzene ring has a large rigidity, which in turn makes the heteroatom compound have a large rigidity. When the heteroatom compound emulsifies with the first medium, due to the large rigidity of the heteroatom compound, under the action of the demulsifier, the heteroatom compounds can quickly break away from the bondage of the first medium and aggregate into a second phase with each other, enabling the working fluid to restore the liquid junction interface and achieve the flow visualization effect.

[0190] In some feasible embodiments, the working fluid may further include: an organic dye. The solubility of the organic dye in the second medium is greater than the solubility of the organic dye in the first medium. The introduction of the organic dye can increase the color contrast between the first medium and the second phase, enabling the working fluid to have a significant flow visualization effect.

[0191] Thus, the description of the second phase is completed.

[0192] It should be noted that when the working fluid is in a static state, there is a liquid junction interface between the first medium and the second medium. When the working fluid is in a flowing state, emulsification may occur between the first medium and the second medium, that is, the second medium is dispersed in the first medium in the form of small droplets. Specifically, reference can be made to, for example Figure 4 , it can be seen that after the first medium and the second medium are emulsified, the second medium is dispersed in the second medium in the form of small droplets to form an emulsion 400, and the liquid junction interface between the first medium and the second medium is destroyed. The working fluid loses the function of flow visualization.

[0193] In order to obtain a working fluid with a stable flow visualization function, as a feasible implementation method, the working fluid may further include: a demulsifier. Among them, the demulsifier can break the emulsion, thereby restoring the liquid junction interface between the first medium and the second phase, enabling the working fluid to have a stable liquid junction interface and enabling the working fluid to have a stable flow visualization effect.

[0194] The embodiments of the present application do not specifically limit the demulsifier. Any auxiliary agent that can break the emulsion formed by the second phase and the first medium can be used as a demulsifier in the embodiments of the present application.

[0195] Exemplarily, the demulsifier may include: sodium alkyl naphthalene sulfonate, sodium petroleum sulfonate, naphthenate, poly(ethylene oxide - propylene oxide) copolymer, organic alcohol, organic ketone, etc.

[0196] In some feasible implementation methods, the hydrophilic - lipophilic balance value of the demulsifier is between 1 and 20, enabling the demulsifier to exist at the liquid junction interface between the first medium and the second phase, playing a role in stabilizing the liquid junction interface and enabling the working fluid to have a stable flow visualization effect.

[0197] As a feasible implementation method, the molecular structural formula of sodium alkyl naphthalene sulfonate includes:

[0198] Among them, R is a hydrophobic group.

[0199] In the embodiments of the present application, the hydrophobic group may include: cycloalkyl, alkoxy, alkyl, etc.

[0200] It should be noted that only an example is shown of the substitution positions of R and sulfonic acid group (SO3Na - ) in a sodium alkyl naphthalene sulfonate, and the above - mentioned substitution positions do not constitute a limitation. For example: in some feasible implementation methods, SO3Na - can be connected to C1, C2, C4 on the naphthalene ring . Again, for example: in some feasible implementation methods, R can be connected to C5, C6, C8 on the naphthalene ring.

[0201] In this implementation method, the molecular structural formula of sodium alkyl naphthalene sulfonate includes: (SO3Na -), making the binding ability of sodium alkyl naphthalene sulfonate with the first medium stronger than that of the second medium with the first medium. When the second medium is dispersed in the first medium in the form of small droplets to form an emulsion, the first medium preferentially binds to SO3Na -, resulting in a reduction in the thickness of the hydration layer on the surface of the small droplets. The small droplets tend to aggregate with each other to form the second phase, thereby restoring the liquid junction interface between the first medium and the second phase.

[0202] In addition, the molecular structural formula of sodium alkyl naphthalene sulfonate includes: a naphthalene ring. The naphthalene ring has a relatively large rigidity, which in turn ensures that the demulsifier has a relatively large rigidity. When the second phase is emulsified with the first medium, the second phase is dispersed in the first medium in the form of small droplets. Due to the relatively large rigidity of the demulsifier, the demulsifier can reach the surface of the small droplets relatively quickly, enabling the small droplets to break free from the constraint of the first medium and aggregate with each other into the second phase, that is, the demulsifier has a relatively fast demulsification efficiency, and the working fluid can quickly restore the liquid junction interface.

[0203] Considering that the demulsification efficiency of the demulsifier is related to the rigidity of the demulsifier. Specifically, the more carbon atoms there are in the main chain of the demulsifier, the longer the molecular chain of the demulsifier, the weaker the rigidity of the demulsifier, and the lower the demulsification efficiency of the demulsifier.

[0204] To ensure the demulsification efficiency of sodium alkyl naphthalene sulfonate, as a feasible implementation method, the number of carbon atoms in the main chain of R is less than or equal to 8.

[0205] Considering that the stability of the visualization effect of the cold working fluid flow is related to the boiling point of the demulsifier. Specifically, the larger the relative molecular mass of the demulsifier, the higher the boiling point of the demulsifier, the better the stability of the demulsifier, the more stable the liquid junction interface between the second phase and the first medium, and the more stable the visualization effect of the working fluid flow.

[0206] To obtain a working fluid with a stable visualization effect of the flow, as a feasible implementation method, the number of carbon atoms in the main chain of R is greater than or equal to 1.

[0207] To balance the demulsification efficiency and the stable visualization effect, as a feasible implementation method, the number of carbon atoms in the main chain of R is between 1 and 8.

[0208] As a feasible implementation method, the molecular structural formula of naphthenate includes:

[0209]

[0210] In this implementation method, it has (-COO-), and the binding ability of -COO- with water is stronger than that of the second medium with water. Therefore, it can be used as a demulsifier in the embodiments of the present application.

[0211] Naphthenate The molecular structural formula of naphthenate includes: a naphthenyl group The naphthenyl group has a relatively large rigidity, enabling the demulsifier to have a relatively large rigidity. The demulsifier can reach the surface of the small droplets relatively quickly, realizing the demulsification function, that is, the demulsifier has a relatively fast demulsification efficiency, and the working fluid can quickly restore the liquid junction interface.

[0212] Considering the relationship between the stability of the visualization effect of the cold working fluid flow and the boiling point of the demulsifier. As a feasible implementation method, In [it], n can be greater than or equal to 3 to ensure [it] has a relatively high boiling point, thereby ensuring that the working fluid has a stable liquid-liquid interface.

[0213] Considering the relationship between the demulsification efficiency of the demulsifier and the rigidity of the demulsifier. As a feasible implementation method, In [it], n can be less than or equal to 12 to ensure [it] has relatively large rigidity, thereby ensuring that the working fluid has a stable liquid-liquid interface.

[0214] As a feasible implementation method, in [it], n can be between 3 and 12.

[0215] In some feasible implementation methods, the molecular structural formula of the organic alcohol includes: at least one of [them].

[0216] In this implementation method, the molecular structural formula of the organic alcohol includes: a hydroxyl group (-OH), and the binding ability of the hydroxyl group to water is stronger than that of the second medium to water. Therefore, the organic alcohol can be used as a demulsifier in the embodiments of the present application.

[0217] In this implementation method, the molecular structural formula of the organic alcohol can include: etc. [It] has a symmetric molecular structural formula, making the organic alcohol have relatively large rigidity, thereby ensuring that the demulsifier has a relatively fast demulsification efficiency.

[0218] In this implementation method, the molecular structural formula of the organic ketone includes: -C=O, and the binding ability of -C=O to water is stronger than that of the second medium to water. Therefore, the organic ketone can be used as a demulsifier in the embodiments of the present application.

[0219] In some feasible implementation methods, the molecular structural formula of the organic ketone includes: etc.

[0220] In this implementation method, the molecular structural formula of the organic ketone includes: All have symmetric molecular structural formulas, making the organic ketone (demulsifier) have relatively large rigidity, thereby ensuring that the working fluid has a stable liquid-liquid interface.

[0221] Considering the relationship between the stability of the visualization effect of the cold working fluid flow and the boiling point of the demulsifier. As a feasible implementation method, in [it], n can be greater than or equal to 2, and m can be greater than or equal to 4 to ensure It has a relatively high boiling point, thereby ensuring a stable flow visualization effect of the working fluid.

[0222] Considering the relationship between the demulsification efficiency of the demulsifier and the rigidity of the demulsifier. As a feasible implementation method, in it, n can be less than or equal to 6, and m can be less than or equal to 10, such that It has relatively large rigidity, thereby ensuring a stable flow visualization effect of the working fluid. As a feasible implementation method, in it, n can be in the range of 2 - 6, and m can be in the range of 4 - 10.

[0223] Thus, the description of the demulsifier is completed.

[0224] In the way that the first medium contains water, there may be a perfusion problem with the working fluid, resulting in the working fluid adhering to the inner wall of the cavity. Specifically, during the process of injecting into the inner wall of the cavity, the water in the working fluid has a relatively large surface tension, making it difficult for the working fluid to wet the inner wall of the cavity, and the working fluid adheres to the inner wall of the cavity, that is, the phenomenon of wall sticking occurs. Specifically, reference can be made to Figure 5 and it can be seen that the working fluid 300 adheres to the inner wall of the inner wall B of the cavity.

[0225] To solve the perfusion problem existing in the working fluid, as a feasible implementation method, the working fluid can also include: a drag - reducing additive.

[0226] The drag - reducing additive can reduce the flow resistance of the first medium, enabling the working fluid to transfer more heat per unit time, and the working fluid can achieve a better temperature control function.

[0227] The embodiments of the present application do not specifically limit the types of additives contained in the drag - reducing additive. Any additive that can reduce the flow resistance of the first medium can be used as a drag - reducing additive and applied to the working fluid disclosed in the embodiments of the present application. In the embodiments of the present application, the drag - reducing additive can reduce the surface tension of the first medium, improve the wetting performance of the first medium on the inner wall of the cavity, and play a role in alleviating the wall - sticking of the working fluid.

[0228] Exemplarily, the drag - reducing additive can include: poly - α - olefin, polymethacrylate, polyacrylamide, polyethylene oxide, poly - α - octene, poly - α - decene, cationic polyacrylamide, etc.

[0229] Considering that the heat dissipation performance of the cold working fluid is related to the flexibility of the drag - reducing additive. Specifically, the larger the relative molecular mass of the drag - reducing additive, the longer the molecular chain of the drag - reducing additive, the better the flexibility of the drag - reducing additive, the more significant the effect of the drag - reducing additive in reducing the flow resistance of the first medium, and the better the heat dissipation performance of the working fluid.

[0230] To further improve the heat dissipation performance of the working fluid, as a feasible implementation method, the relative molecular mass of the drag - reducing additive can be greater than or equal to 2*10 5. Exemplarily, the relative molecular mass of the drag reducer may include: 5*10 5 , 1*10 6 , 5*10 6 and so on.

[0231] In this implementation, the relative molecular mass of the drag reducer may be greater than or equal to 5*10 5 . The drag reducer has a relatively large relative molecular mass, a relatively long molecular chain, relatively large flexibility, and can reduce the flow resistance generated during the flow of the first medium to a large extent. The first medium can transfer more heat per unit time, and the heat dissipation performance of the working fluid is better.

[0232] Thus, the description of the working fluid is completed.

[0233] The embodiment of the present application also discloses a liquid cooling module. Please refer to Figure 6 . The liquid cooling module 10 includes: a pump 200, a liquid cooling module 100, and a working fluid (not shown in the figure). The working fluid is filled in the cavity 110 of the liquid cooling module 100, and the pump 200 is communicated with the cavity 110 of the liquid cooling module.

[0234] As a feasible implementation, the pump 200 may include: a pump base 210 and a piezoelectric component 220 connected to the pump base 210, etc. The pump base 210 is provided with a pump liquid inlet 211 and a pump liquid outlet 212.

[0235] The liquid cooling module 100 is provided with a liquid cooling liquid outlet 111 and a liquid cooling liquid inlet 112. The liquid cooling liquid outlet 111 is used to communicate with the pump liquid inlet 211, and the liquid cooling liquid inlet 112 is used to communicate with the pump liquid outlet 212. A part of the liquid cooling module 100 on the periphery of the liquid cooling liquid outlet 111 and a part of the pump base 210 on the periphery of the pump liquid inlet 211 form a sealing structure to realize the communication between the liquid cooling liquid outlet 111 and the pump liquid inlet 211. A part of the liquid cooling module 100 on the periphery of the liquid cooling liquid inlet 112 and a part of the pump base 210 on the periphery of the pump liquid outlet 212 form a sealing structure to realize the communication between the liquid cooling liquid inlet 112 and the pump liquid outlet 212, that is, to realize the communication between the pump base 210 and the cavity 110 of the liquid cooling module.

[0236] It should be noted that in the embodiment of the present application, the liquid cooling liquid outlet 111 is used to communicate with the pump liquid inlet 211, which does not mean that the liquid cooling liquid outlet 111 and the pump liquid inlet 211 are always in a connected state, but only indicates that under certain conditions, the working fluid can flow from the liquid cooling liquid outlet 111 into the pump liquid inlet 211. The relationship between the liquid cooling liquid inlet 112 and the pump liquid outlet 212 is the same.

[0237] It can be seen that in the liquid cooling module 10 disclosed in this implementation manner, the pump 200 (the pump base 210 therein) in the liquid cooling module 10 communicates with the cavity 110 of the liquid cooling module. The pump 200 can serve as a power source to provide the power for the working medium 300 in the cavity of the liquid cooling module 100 to flow. During the flowing process, the working medium 300 can serve as a medium for heat transfer, enabling the liquid cooling module 100 to achieve the effect of persistent heat dissipation.

[0238] The embodiments of the present application do not specifically limit the connection manner between the partial liquid cooling module on the periphery of the liquid cooling liquid outlet 111 and the partial pump base on the periphery of the pump liquid inlet 211.

[0239] As a feasible implementation manner, the partial liquid cooling module on the periphery of the liquid cooling liquid outlet 111 and the partial pump base on the periphery of the pump liquid inlet 211 are of an integrated structure, and the partial liquid cooling module on the periphery of the liquid cooling liquid inlet 112 and the partial pump base on the periphery of the pump liquid outlet 212 are of an integrated structure. Among them, forming an integrated structure means that there is no continuous interface between the two due to mutual fusion and penetration. The periphery of the liquid cooling liquid outlet refers to the adjacent area around the liquid cooling liquid outlet in a circle.

[0240] As a feasible implementation manner, the partial liquid cooling module on the periphery of the liquid cooling liquid outlet 111 and the partial pump base on the periphery of the pump liquid inlet 211 are of a split structure. The partial liquid cooling module on the periphery of the liquid cooling liquid outlet 111 and the partial pump base on the periphery of the pump liquid inlet 211 can be connected by means such as screw fixation, high-temperature glue bonding, UV glue photocuring bonding, thermocompression bonding and sealing welding, hot melting welding, ultrasonic welding, and radio frequency welding. Similarly, the partial liquid cooling module on the periphery of the liquid cooling liquid inlet 112 and the partial pump base on the periphery of the pump liquid outlet 212 can be of a split structure, and the partial liquid cooling module on the periphery of the liquid cooling liquid inlet 112 and the partial pump base on the periphery of the pump liquid outlet 212 can be connected by the above-mentioned means.

[0241] In order to improve the elongation at break of the liquid cooling module 10 and facilitate the release of the stress when the liquid cooling module 10 is bent. As a feasible implementation manner, the surface energy difference between the partial liquid cooling module 100 on the periphery of the liquid cooling liquid outlet 111 and the partial pump base 210 on the periphery of the pump liquid inlet 211 is less than or equal to 5 mN / m.

[0242] In this implementation manner, the surface energy difference between the partial liquid cooling module 100 on the periphery of the liquid cooling liquid outlet 111 and the partial pump base 210 on the periphery of the pump liquid inlet 211 is less than or equal to 5 mN / m. The surface energy difference between the liquid cooling module 100 and the pump base 210 is relatively small. The stress when the liquid cooling module 100 and the pump base 210 are bent can be released preferably, so that the liquid cooling module 100 and the pump base 210 have a relatively high elongation at break.

[0243] Similarly, as a feasible implementation, the surface energy difference between some of the liquid cooling modules 100 on the peripheral side of the liquid cooling inlet 112 and some of the pump base bodies 210 on the peripheral side of the pump outlet 212 is less than or equal to 5 mN / m.

[0244] In the embodiment of the present application, the liquid cooling module 100 has a cavity 110 inside. The working medium is filled in the cavity 110 of the liquid cooling module. The working medium adopts the working medium disclosed in the embodiment of the present application. Specifically, the working medium may include: a first medium and a second phase. There is a liquid junction interface between the first medium and the second phase. When the working medium moves driven by the pump, the liquid junction interface of the working medium will move relative to the cavity, so that the working medium can exhibit a flow visualization effect.

[0245] In the embodiment of the present application, the visible light transmittance of at least part of the liquid cooling module 100 is greater than or equal to a threshold value, so that the flow visualization effect of the working medium 300 can be displayed through the liquid cooling module 100 in this area, that is, the liquid cooling module 10 can achieve a visualization effect.

[0246] The embodiment of the present application does not specifically limit the value of the above threshold. Exemplarily, the threshold may be: 70%, 80%, 90%, etc.

[0247] As a feasible implementation, at least part of the liquid cooling module 100 may adopt a transparent material, so that at least part of the liquid cooling module 100 has a large visible light transmittance, so that the liquid cooling module can achieve a significant visualization effect.

[0248] In the embodiment of the present application, the transparent material can be understood as a material with a visible light transmittance greater than the threshold value in the wavelength band of 380 nm - 760 nm.

[0249] As a feasible implementation, the transparent material may include: inorganic glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), cycloolefin copolymer (COC), polymethylpentene (PMP), polyimide (PI), polymethyl methacrylate (PMMA), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), styrene-acrylonitrile copolymer (AS), acrylonitrile-butadiene-styrene copolymer (ABS), butadiene-styrene copolymer (BS), etc.

[0250] The transparent material disclosed in this implementation has a large visible light transmittance. The liquid cooling module 100 formed by using the above materials has a large visible light transmittance (in some implementations, the visible light transmittance of the liquid cooling module 100 can reach more than 90%), so that the liquid cooling module 10 can achieve a significant flow visualization effect.

[0251] In some feasible implementation manners, the molecular structural formula of the transparent material may include, but is not limited to:

[0252] etc.

[0253] In this implementation manner, the molecular structural formula of the transparent material contains: an ether bond (-O-), and the ether bond can disrupt the conjugated structure of the benzene ring in the molecular structural formula, making the transparent material have a high visible light transmittance. The liquid cooling module 100 has a high visible light transmittance, ensuring that the liquid cooling module 10 can achieve a significant flow visualization effect.

[0254] Considering that the thermal performance and mechanical performance of the liquid cooling module 100 are related to the relative molecular mass of the transparent material. Specifically, the larger the relative molecular mass of the transparent material, the better the thermodynamic performance and mechanical performance of the transparent material.

[0255] In order to obtain a liquid cooling module 100 with good thermodynamic performance and mechanical performance, as a feasible implementation manner, where n can be greater than or equal to 100, so that the molecular structural formula includes The transparent material has good thermodynamic performance and mechanical performance. Furthermore, it is ensured that the liquid cooling module 100 obtained from this transparent material has good thermodynamic performance and mechanical performance.

[0256] Considering that the visible light transmittance performance of the liquid cooling module 100 is related to the number of conjugated structures in the molecular structural formula of the transparent material. Specifically, the conjugated structure has a charge-transfer complex (CTC) effect between and within molecules, resulting in the transparent material showing color. Therefore, the more conjugated structures contained in the molecular structural formula of the transparent material, the lower the visible light transmittance of the transparent material.

[0257] In order to obtain a liquid cooling module 100 with a high visible light transmittance, as a feasible implementation manner,

[0258] where n can be less than or equal to 200, so that the molecular structural formula includes The transparent material has a high visible light transmittance, and further ensures that the liquid cooling module 100 obtained from this transparent material has a high visible light transmittance, ensuring that the liquid cooling module 10 can exhibit a significant flow visualization effect.

[0259] In order to balance the thermodynamic performance, mechanical performance and visualization performance of the liquid cooling module, as a feasible implementation manner,

[0260] where n is between 100 and 200.

[0261] As a feasible implementation method, n in can be greater than or equal to 100. As a feasible implementation method, n in can be less than or equal to 200. As a feasible implementation method, n in can be in the range of 100 - 200.

[0262] In some feasible implementation methods, the molecular structural formula of the transparent material may include: etc.

[0263] In this implementation method, the molecular structural formula of the transparent material includes: The transparent material has fewer conjugated structures, so the transparent material has a higher visible light transmittance. Therefore, the liquid cooling module can achieve a more significant flow visualization effect.

[0264] Considering that the thermal performance and mechanical performance of the liquid cooling module 100 are related to the relative molecular mass of the transparent material. Specifically, the larger the relative molecular mass of the transparent material, the better the thermal performance and mechanical performance of the liquid cooling module 100 formed by the transparent material.

[0265] As a feasible implementation method, n in is greater than or equal to 200, so that the molecular structural formula includes The transparent material has good thermodynamic properties and mechanical properties. Furthermore, it ensures that the liquid cooling module 100 obtained from this transparent material has good thermodynamic properties and mechanical properties.

[0266] Considering that the bending performance of the liquid cooling module 100 is related to the distribution of substituents in the transparent material. Specifically, the greater the density of the substituents distributed in the molecular structural formula, the poorer the flexibility of the transparent material. Correspondingly, the bending performance of the liquid cooling module 100 formed by this transparent material is poorer, and the bending performance of the liquid cooling module 10 is poorer.

[0267] To ensure that the liquid cooling module has better bending performance, as a feasible implementation method, n in is less than or equal to 300. When n in is less than or equal to 300, the large-volume substituents distributed in the transparent material are fewer, and the density of the large-volume substituents distributed in the transparent material is less. The transparent material has better flexibility, and the liquid cooling module 100 formed by this transparent material has better flexibility, ensuring that the liquid cooling module 10 has better bending performance.

[0268] To balance the thermodynamic properties, mechanical properties and bending performance of the liquid cooling module 10, as a feasible implementation method n in is in the range of 200 - 300.

[0269] As a feasible implementation method, n in can be greater than or equal to 240. As a feasible implementation method, n in can be less than or equal to 340. As a feasible implementation method, n in can be within 240 - 340.

[0270] It should be noted that in the above embodiments, forming the liquid cooling module 100 with a transparent material can be understood as forming at least part of the area of the liquid cooling module 100 with a transparent material, so that at least part of the area of the liquid cooling module 100 has a high visible light transmittance.

[0271] Please continue to refer to Figure 6 , as a feasible implementation method, the liquid cooling module 100 may include: a covering layer 120, a flow channel layer 130, and a covering layer 140 arranged in sequence. The covering layer 120 is arranged on one side of the flow channel layer 130, the covering layer 140 is arranged on the other side of the flow channel layer 130, and the covering layer 120, the flow channel layer 130, and the covering layer 140 enclose to form a cavity 110. For the convenience of distinction, in the embodiments of the present application, one of the covering layers 120 is called the top cover layer 120; the other covering layer 140 is called the bottom cover layer 140.

[0272] As a feasible implementation method, the flow channel layer 130 includes: at least one rigid substrate 131. The rigid substrate 131 is arranged between the top cover layer 120 and the bottom cover layer 140 for supporting the top cover layer 120 and the bottom cover layer 140.

[0273] The rigid substrate 131 is also used to divide the flow channels in the cavity 110 into at least one liquid inlet flow channel 1101 and at least one liquid outlet flow channel 1102. Both the liquid inlet flow channel 1101 and the liquid outlet flow channel 1102 are formed by enclosing the rigid substrate 131 with the top cover layer 120 and the bottom cover layer 140. The liquid inlet flow channel 1101 is in a communicating state with the liquid cooling liquid inlet 112, and the liquid outlet flow channel 1102 is in a communicating state with the liquid cooling liquid outlet 111. The liquid inlet flow channel 1101 and the liquid outlet flow channel 1102 are separated by the rigid substrate 131, which is beneficial to avoiding the mixing of the cooling medium in the liquid inlet flow channel 1101 and the liquid outlet flow channel 1102 and affecting the heat dissipation effect.

[0274] As this feasible implementation method, the top cover layer 120, the rigid substrate 131, and the bottom cover layer 140 can be an integrated structure. So that the liquid inlet flow channel 1101 and the liquid outlet flow channel 1102 formed by enclosing the top cover layer 120, the rigid substrate 131, and the bottom cover layer 140 have a good sealing effect and avoid the occurrence of liquid leakage (working medium 300) problems.

[0275] It should be noted that in the implementation method where the top cover layer 120, the rigid substrate 131, and the bottom cover layer 140 are of an integrated structure, the top cover layer 120, the rigid substrate 131, and the bottom cover layer 140 are all made of transparent materials, so that the liquid cooling module can achieve the effect of visible fluid flow.

[0276] As a feasible implementation method, the top cover layer 120, the rigid substrate 131, and the bottom cover layer 140 can be of a split structure. The top cover layer 120, the rigid substrate 131, and the bottom cover layer 140 can be connected by means such as screw fixation, high-temperature adhesive bonding, UV adhesive photocuring bonding, thermocompression bonding seal welding, hot melting welding, ultrasonic welding, and radio frequency welding for sealing. In this implementation method, the top cover layer 120, the rigid substrate 131, and the bottom cover layer 140 can use the same or different materials. However, it is necessary to ensure that at least one of the top cover layer 120 and the bottom cover layer 140 uses a transparent material.

[0277] In one implementation, the difference between the melting temperature of the covering layers (120, 140) and the melting temperature of the rigid substrate 131 is less than or equal to 20 °C. The small difference in the melting temperature between the covering layers (120, 140) and the rigid substrate 131 is beneficial to forming an integrated structure between the covering layers (120, 140) and the rigid substrate 131 by means of seal welding, and improving the sealing effect of the liquid inlet channel 1101 and the liquid outlet channel 1102.

[0278] Seal welding can include high-temperature connection methods without solder paste such as thermocompression bonding seal welding, hot melting welding, ultrasonic welding, and radio frequency welding. Thermocompression sealing is usually carried out in a high-temperature environment. If the difference in the thermal expansion coefficient between the covering layers (120, 140) and the rigid substrate 131 is large, the covering layers (120, 140) and the rigid substrate 131 will warp, reducing the sealing effect of the liquid inlet channel 1101 and the liquid outlet channel 1102 enclosed by the covering layers (120, 140) and the rigid substrate 131.

[0279] To further improve the sealing effect of the liquid inlet channel 1101 and the liquid outlet channel 1102, as a feasible implementation method, the difference between the thermal expansion coefficient of the covering layers (120, 140) and the thermal expansion coefficient of the rigid substrate 131 is less than or equal to 10×10 -6 / (°C).

[0280] In this implementation method, the difference between the thermal expansion coefficient of the covering layers (120, 140) and the thermal expansion coefficient of the rigid substrate 131 is less than or equal to 10×10 -6 / °C. The difference in the coefficient of thermal expansion between the covering layers (120, 140) and the rigid substrate 131 is small, which can, to a certain extent, reduce the warping of the covering layers (120, 140) and the rigid substrate 131 during the hermetic welding process, and ensure that the liquid inlet flow channel 1101 and the liquid outlet flow channel 1102 surrounded by the covering layers (120, 140) and the rigid substrate 131 have a good sealing effect.

[0281] As a feasible implementation method, the thickness of the covering layers (120, 140) is less than 2 mm. In this implementation method, on the one hand, the thickness of the covering layers (120, 140) being less than or equal to 2 mm can achieve the lightweight of the liquid cooling module 10. On the other hand, it can achieve the liquid cooling module 10 with a significant flow visualization effect.

[0282] In order to avoid the evaporation loss of the working fluid during long-term operation, which affects the reliability of the liquid cooling module, as a feasible implementation method, an anti-evaporation layer is applied to the surface of the covering layers (120, 140). The embodiments of the present application do not specifically limit the position of the anti-evaporation layer. As a feasible implementation method, the anti-evaporation layer can be arranged on the side of the covering layers (120, 140) close to the working fluid. As a feasible implementation method, the anti-evaporation layer can be arranged on the side of the covering layers (120, 140) far from the working fluid.

[0283] In the embodiments of the present application, the density of the anti-evaporation layer is greater than that of the covering layer. The setting of the anti-evaporation layer can increase the difficulty of the working fluid escaping from the cavity, that is, the anti-evaporation layer plays a role in reducing the evaporation loss of the working fluid.

[0284] In addition, the visible light transmittance of the anti-evaporation layer is greater than or equal to the threshold value to ensure the flow visualization effect of the liquid cooling module.

[0285] The embodiments of the present application do not specifically limit the material used for the anti-evaporation layer. Any material that can avoid the evaporation loss of the working fluid can be used as the material of the anti-evaporation layer in the embodiments of the present application. Exemplarily, the material used for the anti-evaporation layer can include at least one of a polyimide layer, a polyvinylidene chloride layer, or a metal thin film layer.

[0286] In this implementation method, an anti-evaporation layer is arranged on the surface of the covering layers (120, 140). The anti-evaporation layer can play a role in avoiding the evaporation loss of the working fluid, thereby ensuring the long-term reliability of the liquid cooling module. At the same time, the visible light transmittance of the anti-evaporation layer is greater than or equal to the threshold value, thereby ensuring the flow visualization effect of the liquid cooling module.

[0287] The following will illustrate the heat dissipation performance of the working fluid disclosed in the embodiments of the present application with specific data:

[0288] The working fluid disclosed in the embodiments of the present application can have a relatively small impedance (flow resistance) and a large flow rate when applied in a liquid cooling module, thereby having a stronger heat exchange capacity and an equivalent thermal conductivity. Specifically, refer to Figure 7 , Figure 7 which is the relationship curve between the flow rate Q and the impedance P (unit: Pa) of the liquid cooling module. Among them, curve C is the pressure-flow curve of the pump in the liquid cooling system, that is, the P-Q curve. Curve A is the impedance-flow P-Q data of the working fluid (the first medium is water) disclosed in the embodiments of the present application. The intersection point with curve C is the impedance-flow value in actual application, the working point impedance is ~37000 KPa, and the flow rate is ~1.8 ml / min; curve B is the impedance-flow P-Q data of the working fluid (fluorinated liquid plus flowing sand oil). The intersection point with curve C is the impedance-flow value in actual application, the working point impedance is ~60000 KPa, and the flow rate is ~1.2 ml / min. It can be seen that for the same pump and the same liquid cooling module, the hybrid working fluid disclosed in the embodiments of the present application has a smaller viscosity and impedance, higher flow rate and flow velocity, and thus has a lower temperature difference and a higher equivalent thermal conductivity.

[0289] The following is an illustration with specific experimental results. The specific experimental results can be referred to Table 1:

[0290] Table 1

[0291]

[0292] The experimental conditions are as follows:

[0293] When the working fluid disclosed in the embodiments of the present application is applied in a liquid cooling module (the total thickness of the liquid cooling module is 0.2 mm), in an environment with a heat source of 3.5 W, the temperature difference between the hot end and the cold end of the liquid cooling module is approximately 3.7 °C. The equivalent thermal conductivity is equivalent to that of a two-phase heat exchange VC (Vapor Chamber) heat sink or heat pipe, >5000 W / m-K, which is much higher than the thermal conductivities of conventional copper-aluminum and natural graphite (<800 W / m-K).

[0294] When the working fluid (fluorinated liquid plus flowing sand oil) is applied in a liquid cooling module (the total thickness of the liquid cooling module is 0.2 mm), in an environment with a heat source of 3.5 W, the temperature difference between the hot end and the cold end of the liquid cooling module is approximately 14 °C.

[0295] When the working fluid (fluorinated liquid plus flowing sand oil) is applied in a liquid cooling module (the total thickness of the liquid cooling module is 0.33 mm), in an environment with a heat source of 3.5 W, the temperature difference between the hot end and the cold end of the liquid cooling module is approximately 8.3 °C.

[0296] The following further illustrates the liquid cooling module disclosed in the embodiments of the present application with specific examples.

[0297] Example 1:

[0298] The components of each part of the liquid cooling module disclosed in the first embodiment can be referred to Table 2:

[0299] Table 2

[0300]

[0301] In the liquid cooling module disclosed in the first embodiment, the second phase includes: fluorinated liquid and heat-conducting oil. Both the fluorinated liquid and the heat-conducting oil can form a liquid-liquid interface with water, making the flow state of the working fluid have a visual effect. The working fluid also includes: inorganic dye Reactive Brilliant Orange. Reactive Brilliant Orange can dissolve in water, making the first medium show color, thereby enhancing the contrast between the first medium and the second phase and enhancing the visual effect of the working fluid flow.

[0302] In the liquid cooling module, the working fluid is encapsulated in the cavity of the liquid cooling module 100, and the liquid cooling module 100 is made of a transparent material COC. The liquid cooling module 100 has a high visible light transmittance. The visual effect of the working fluid flow can be displayed through the liquid cooling module 100. The liquid cooling module disclosed in the first embodiment has a flow visualization effect.

[0303] The first medium includes water with better heat dissipation performance, ensuring that the liquid cooling film group has excellent heat dissipation ability. After running in the presence of a 50°C heat source, the temperature difference at each point of the liquid cooling film group < 5°C.

[0304] The second embodiment:

[0305] The components of each part of the liquid cooling module disclosed in the second embodiment can be referred to Table 3:

[0306] Table 3

[0307]

[0308] The micro-pump liquid cooling module disclosed in the second embodiment has the same components as the liquid cooling module disclosed in the first embodiment, and each component has similar components. The difference is that the first medium in the liquid cooling group disclosed in the second embodiment further includes: liquid metal. Since liquid metal is a good conductor of heat, the heat dissipation ability of the first medium containing liquid metal is further improved. Therefore, the heat dissipation ability of the liquid cooling module disclosed in the second embodiment is further improved.

[0309] The third embodiment:

[0310] The components of each part of the liquid cooling module disclosed in the third embodiment can be referred to Table 4:

[0311] Table 4

[0312]

[0313] The liquid cooling module disclosed in the third embodiment has a flow visualization effect and at the same time has excellent heat dissipation ability.

[0314] Example 4:

[0315] The components of each part of the liquid cooling module disclosed in Example 4 can be referred to Table 5:

[0316] Table 5

[0317]

[0318] In the liquid cooling module disclosed in Example 4, a fluorocarbon surfactant is added to the working fluid. The fluorocarbon surfactant can reduce the surface tension of the first medium, thereby reducing the filling difficulty of the first medium and reducing the occurrence of the problem of the first medium sticking to the wall.

[0319] This application embodiment also discloses an electronic device, please refer to Figures 8 - 12 . The electronic device 1 may include: the liquid cooling module 10 and the housing 20 disclosed in this application embodiment. The liquid cooling module 10 is embedded in the housing 20, and the visible light transmittance of at least part of the area of the housing 20 is greater than or equal to the threshold. Please refer to Figure 12 , at least part of the area C of the housing 20 with a visible light transmittance greater than or equal to the threshold coincides with at least part of the area D of the liquid cooling module 100 with a visible light transmittance greater than or equal to the threshold.

[0320] The housing 20 located on the outermost layer of the electronic device 1 can play a role in protecting other components.

[0321] The liquid cooling module 10 may include: a liquid cooling module 100, a pump 200, and a working fluid (not shown in the figure). The working fluid may include: a first medium and a second medium. The pump 200 drives the movement of the working fluid as the power source of the working fluid. During the movement of the working fluid, the liquid interface will move relative to the inner wall of the cavity, thereby visualizing the flow effect.

[0322] At least part of the area of the housing 20 with a visible light transmittance greater than or equal to the threshold coincides with at least part of the area of the liquid cooling module 100 with a visible light transmittance greater than or equal to the threshold. The visualization effect of the movement of the working fluid can be displayed through the area of the housing 20 with a visible light transmittance greater than or equal to the threshold and the area of the liquid cooling module 100 with a visible light transmittance greater than or equal to the threshold, that is, the electronic device can display the flow visualization effect.

[0323] In this application embodiment, the area of the electronic device with the flow visualization effect can be called the flow visualization area 2A.

[0324] The electronic device disclosed in this application embodiment may include but is not limited to: mobile phones ( Figure 8 ), tablet computers ( Figure 9 ), laptop computers ( Figure 10 ), in-vehicle devices ( Figure 11 ), etc.

[0325] The electronic device disclosed in the embodiments of the present application will be further described below in conjunction with specific examples.

[0326] Exemplarily, please refer to Figure 8 in (1), the liquid cooling module 10 is embedded in the inner housing 20 of the mobile phone. The visible light transmittance of the inner housing 20 of the mobile phone in the area 2A of the camera substrate is greater than or equal to the threshold value, and the liquid interface of the working medium (not shown in the figure) can be seen through the area 2A. The pump drives the working medium to move, making the area 2A a flow visualization area 2A.

[0327] Exemplarily, please refer to Figure 8 in (2), the liquid cooling module 10 is embedded in the inner housing 20 of the mobile phone. The mobile phone housing includes: a first non-folded portion 21, a folded portion 23, and a second non-folded portion 22. The visible light transmittance of partial areas of the first non-folded portion 21, partial areas of the folded portion 23, and partial areas of the second non-folded portion 22 is greater than or equal to the threshold value (transparent areas). The above-mentioned transparent areas form an axis-crossing flow visualization area 2A.

[0328] Exemplarily, please refer to Figure 9 , the liquid cooling module 10 is embedded in the tablet computer housing 20, and the visible light transmittance of at least partial areas of the tablet computer housing 20 is greater than or equal to the threshold value, and a flow visualization area 2A is formed in this area.

[0329] Exemplarily, please refer to Figure 10 , the housing of the notebook computer may include: a body housing 24 and a display housing 25. Please refer to Figure 10 in (1), in some feasible implementation manners, the liquid cooling module 10 is embedded in the body housing 24, so that the body housing 24 can include a flow visualization area 2A.

[0330] Please refer to Figure 10 in (2), in some feasible implementation manners, the liquid cooling module 10 is embedded in the display housing 25, so that the display housing 25 can include a flow visualization area 2A.

[0331] Exemplarily, please refer to Figure 11 , the liquid cooling module 10 can be embedded in the vehicle-mounted device housing 20, so that the vehicle-mounted device housing 20 has a flow visualization area 2A.

[0332] It should be noted that, in the implementation manner of embedding the liquid cooling module in the housing, different-shaped flow visualization areas can be obtained by setting the shape of the light-transmitting area of the housing. The embodiments of the present application only exemplarily introduce several shapes of the flow visualization area, and the above-mentioned shapes do not constitute specific limitations.

[0333] The embodiments of the present application also disclose an accessory, which is applicable to an electronic device. The accessory body and the liquid cooling module disclosed in the embodiments of the present application, the liquid cooling module is embedded in the accessory body, and at least part of the area of the accessory body has a visible light transmittance greater than or equal to a threshold value. At least part of the area of the accessory body with a visible light transmittance greater than or equal to the threshold value coincides with at least part of the area of the liquid cooling module with a visible light transmittance greater than or equal to the threshold value. So that the visualization effect of the working medium flow in the liquid cooling module can be displayed through the accessory body in this area, that is, this area of the accessory becomes a flow visualization area.

[0334] Please refer to Figure 13 , Figure 13 There is disclosed a protective case, and the protective case 2 may include: an accessory body 40 and a liquid cooling module 10 embedded in the accessory body 40. At least part of the area of the accessory body 40 has a visible light transmittance greater than or equal to a threshold value, so that the visualization effect of the working medium flow can be displayed through this area, and the accessory has a flow display area 2A.

[0335] The accessory involved in the embodiments of the present application can be understood as a component used in conjunction with an electronic device, a component provided outside the housing. Exemplarily, the accessory may include, but is not limited to: a wristband, a protective case.

[0336] The following will illustrate the application scenarios of the accessory with specific examples:

[0337] Exemplarily, please refer to Figure 14 , Figure 14 is an assembly diagram of a wearable device 1 and a wristband 2 (accessory). The wristband 2 is connected to the wearable device 1, so that the wearable device 1 can be sleeved on a target object. The liquid cooling module can be arranged inside the wristband, so that the wristband has a flow visualization area 2A.

[0338] Exemplarily, please refer to Figure 15 , Figure 15 is an assembly diagram of a tablet computer 1 and a protective case 2 (accessory). The protective case 2 can be sleeved outside the tablet computer 1 to protect the tablet computer 1. The liquid cooling module can be arranged inside the protective case 2, so that the protective case 2 has a flow visualization area 2A.

[0339] Exemplarily, please refer to Figure 16 , Figure 16 is an assembly diagram of a mobile phone 1 and a connector 2 (accessory). The connector 2 is connected to the mobile phone. The liquid cooling module can be arranged inside the connector 2, so that the connector 2 has a flow visualization area 2A.

[0340] The embodiments of the present application also disclose a preparation method of a working medium, including: measuring a first medium and a second medium; mixing the first medium and the second medium to obtain the working medium

[0341] The working medium, liquid cooling module and electronic device provided by the embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and embodiments of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A liquid cooling module, characterized in that, Comprising: A liquid cooling module, the liquid cooling module including a cavity, and the visible light transmittance of at least a part of the liquid cooling module being greater than or equal to a threshold value; A working fluid, the working fluid being arranged in the cavity, the working fluid including: a first medium and a second phase, and there being a liquid-liquid interface between the second phase and the first medium; the second phase including: at least two second media, and there being a liquid-liquid interface between any two of the second media; A pump, the pump being communicated with the cavity, and the pump being used for driving the working fluid in the cavity to flow, so that the liquid-liquid interface moves relative to the cavity; The working fluid further includes: a demulsifier; the demulsifier being used for destroying the emulsion formed by the first medium and the second phase.

2. The liquid cooling module according to claim 1, wherein The first medium includes: at least one of water and liquid metal.

3. The liquid cooling module according to claim 1 or 2, characterized in that, Further comprising: A water-soluble dye, the solubility of the water-soluble dye in the first medium being greater than the solubility of the water-soluble dye in the second phase.

4. The liquid cooling module according to claim 1, characterized in that, Under a 25°C environment, the thermal conductivity coefficient of the first medium is greater than or equal to 0.1 W / m·k.

5. The liquid cooling module according to claim 1, wherein Under a 25°C environment, the specific heat capacity of the first medium is greater than or equal to 1000 J / kg·°C.

6. The liquid cooling module according to claim 1, wherein Under a 25°C environment, the viscosity of the first medium is less than or equal to 50 cp.

7. The liquid cooling module according to claim 1, characterized in that, The mass fraction of the first medium in the working fluid is greater than or equal to 80%.

8. The liquid cooling module according to claim 7, wherein, At least two of the second media are mutually soluble.

9. The liquid cooling module according to claim 1, wherein The working fluid further includes: an organic dye, the solubility of the organic dye in the second phase being greater than the solubility of the organic dye in the first medium.

10. The liquid cooling module according to claim 1, characterized in that, The working fluid further includes: a drag reducer; The drag reducer being used for reducing the flow resistance of the first medium.

11. The liquid cooling module according to claim 10, wherein The drag reducer includes: at least one of poly-α-olefin, polymethacrylate, polyacrylamide, polyethylene oxide, poly-α-octene, poly-α-decene, and cationic polyacrylamide.

12. The liquid cooling module according to claim 11, wherein, The relative molecular mass of the drag reducer is greater than or equal to 2×10 5 .

13. The liquid cooling module according to claim 1, characterized in that, The demulsifier includes: at least one of sodium alkyl naphthalene sulfonate, petroleum sulfonate, naphthenate, poly(ethylene oxide-propylene oxide) copolymer, organic alcohol, and organic ketone.

14. The liquid cooling module according to claim 13, wherein The molecular structural formula of the sodium alkyl naphthalene sulfonate includes: The R includes: a hydrophobic group.

15. The liquid cooling module according to claim 14, wherein, The molecular structural formula of the naphthenate includes: The value of n is from 3 to 12.

16. The liquid cooling module according to claim 13, wherein The molecular structural formula of the organic alcohol includes: at least one of 17. The liquid cooling module according to claim 13, wherein The molecular structural formula of the organic ketone includes: at least one of 18. The liquid cooling module according to claim 1, wherein The hydrophilic-lipophilic balance value of the demulsifier is between 1 and 20.

19. The liquid cooling module according to claim 18, wherein The liquid cooling module includes: a flow channel layer and at least two covering layers, one covering layer being arranged on one side of the flow channel layer, and the other covering layer being arranged on the other side of the flow channel layer, the covering layer and the flow channel layer enclosing to form the cavity, and the visible light transmittance of at least one covering layer being greater than or equal to the threshold value.

20. The liquid cooling module according to claim 19, wherein The difference between the melting temperature of the flow channel layer and the melting temperature of the covering layer is less than or equal to 20°C.

21. The liquid cooling module according to claim 19, wherein The difference between the coefficient of thermal expansion of the flow channel layer and that of the covering layer is less than or equal to 10*10 -6 / °C.

22. The liquid cooling module according to claim 19, wherein, The thickness of the covering layer is less than or equal to 2 mm.

23. The liquid cooling module according to claim 22, wherein At least one covering layer is made of a transparent material, and the transparent material includes: at least one of inorganic glass, polyethylene terephthalate, polyethylene naphthalate, polypropylene, cycloolefin copolymer, poly(4-methyl-1-pentene), polyimide, polymethyl methacrylate, polyphenylene sulfide, polyether ether ketone, styrene-acrylonitrile copolymer, acrylonitrile-butadiene-styrene copolymer, and butadiene-styrene copolymer.

24. The liquid cooling module according to claim 23, wherein The molecular structural formula of the transparent material includes: at least one of; The where n is from 100 to 200; the where n is from 100 to 200.

25. The liquid cooling module according to claim 23, wherein The molecular structural formula of the transparent material includes: at least one of; said where n is between 240 and 340; said where n is between 200 and 300.

26. The liquid cooling module according to claim 19, wherein It also includes: An anti-evaporation layer, which is disposed on the surface of the covering layer. The density of the anti-evaporation layer is greater than that of the covering layer, and the visible light transmittance of the anti-evaporation layer is greater than or equal to the threshold value.

27. An electronic device, characterized in that, It includes: A housing and the liquid cooling module according to any one of claims 1-26; The liquid cooling module is embedded in the housing. The visible light transmittance of at least part of the housing is greater than or equal to the threshold value, and the area of the housing with a visible light transmittance greater than or equal to the threshold value at least partially coincides with the area of the liquid cooling module with a visible light transmittance greater than or equal to the threshold value.

28. A fitting, applicable to an electronic device, characterized in that, It includes: A fitting body and the liquid cooling module according to any one of claims 1-26. The liquid cooling module is embedded in the fitting body; the area of the fitting body with a visible light transmittance greater than or equal to the threshold value at least partially coincides with the area of the liquid cooling module with a visible light transmittance greater than or equal to the threshold value.

Images