CN107994297B - Intelligent heat dissipation material, battery heat dissipation explosion-proof device and manufacturing method thereof - Google Patents

Intelligent heat dissipation material, battery heat dissipation explosion-proof device and manufacturing method thereof Download PDF

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CN107994297B
CN107994297B CN201711328401.XA CN201711328401A CN107994297B CN 107994297 B CN107994297 B CN 107994297B CN 201711328401 A CN201711328401 A CN 201711328401A CN 107994297 B CN107994297 B CN 107994297B
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heat dissipation
explosion
battery
intelligent
dissipation material
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CN107994297A (en
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闫文境
胡剑平
黄骏
毛小飞
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Shenzhen Haylion Technologies Co ltd
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Shenzhen Haylion Technologies Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses an intelligent heat dissipation material, a battery heat dissipation explosion-proof device and a manufacturing method thereof, belongs to the technical field of battery heat dissipation systems, and solves the problems that in the prior art, a battery is low in heat dissipation rate, high in energy consumption, and prone to explosion when being collided. The intelligent heat dissipation material comprises aloe gel. The battery heat dissipation explosion-proof device comprises an explosion-proof box and an intelligent heat dissipation material filled in the explosion-proof box. During manufacturing, the battery is suspended in the air and placed in the explosion-proof box; and filling the intelligent heat dissipation material into the explosion-proof box, so that the intelligent heat dissipation material surrounds the battery. The intelligent heat dissipation material and the battery heat dissipation explosion-proof device can be used for cooling and explosion-proof of the battery.

Description

Intelligent heat dissipation material, battery heat dissipation explosion-proof device and manufacturing method thereof
Technical Field
The invention relates to a battery heat dissipation system, in particular to an intelligent heat dissipation material, a battery heat dissipation explosion-proof device and a manufacturing method thereof.
Background
The battery temperature is one of the important factors influencing the service life and the use safety of the battery, when the battery temperature is over high and is close to 60 ℃, the danger of explosion exists when the battery is in accidental collision, and therefore, effective cooling measures must be taken to ensure that the battery temperature meets the requirements.
In the prior art, an air cooling method based on external cooling of a battery is generally adopted to cool the battery, and specifically includes a refrigeration condensation cooling method, a solid dynamic adsorption cooling method, a static adsorption cooling method and a solution cooling method.
The cooling equipment adopting the method has the advantages of complex structure, large power consumption and low cooling speed, and the Freon can also damage the atmospheric ozone layer; the solid dynamic adsorption cooling method has the disadvantages of slow cooling speed, large equipment volume and weight and poor flexibility; the static adsorption cooling method adopts liquid heat absorbent (such as lithium bromide and lithium chloride) and solid heat absorbent (such as silica gel and metal) to absorb latent heat or sensible heat of moisture in the air, but the two heat absorbents cannot ensure that the battery cannot generate problems when the battery is collided. The most critical point of the solution cooling method is the dosage of the cooling agent and the sealing performance of the cooling equipment, and because the dosage of the cooling agent is limited, the sealing material must rely on expensive imported raw materials to achieve smooth and flat cut, the manufacturing cost of the cooling equipment is high, and the application range is small.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide an intelligent heat dissipation material, a battery heat dissipation explosion-proof device and a manufacturing method thereof, which solve the problems of low battery heat dissipation rate, high energy consumption and explosion liability of a battery due to collision in the prior art.
The purpose of the invention is mainly realized by the following technical scheme:
in a first aspect, the present invention provides an intelligent heat dissipating material comprising aloe vera gel.
Furthermore, the intelligent heat dissipation material also comprises an intelligent isopropyl acrylamide polymer, silica gel, graphene, glass fiber and sintered ceramic clay;
the intelligent heat dissipation material comprises, by mass, 5-24% of an intelligent isopropyl acrylamide polymer, 5-6% of aloe gel, 24-75% of silica gel, 5-12% of graphene and 10-35% of sintered ceramic clay.
Further, the smart material also comprises TiO2And/or Al2O3，TiO 25 to 12 percent of Al2O3The mass percentage of (B) is 5-24%.
In a second aspect, the invention also provides a battery heat dissipation explosion-proof device, which comprises an explosion-proof box and an intelligent heat dissipation material filled in the explosion-proof box; during the use, the battery is located explosion-proof box, and intelligent heat radiation material surrounds the battery.
Furthermore, the battery heat dissipation explosion-proof device also comprises a supporting part positioned inside the explosion-proof box, and the battery is arranged on the supporting part.
Further, the supporting part is a plate-shaped structure similar to corrugated paper and comprises a plurality of hard glue layers and a supporting part glass fiber layer positioned between the plurality of hard glue layers, and the cross section of the supporting part glass fiber layer is wavy.
Furthermore, the battery heat dissipation explosion-proof equipment still includes spacing portion, and spacing portion is located between the lateral wall of battery and the inner wall of explosion-proof box.
Further, spacing portion is the platelike structure of similar corrugated paper, including multilayer soft glue film and the spacing portion glass fiber layer that is located between the multilayer soft glue film, and the shape of the cross section of spacing portion glass fiber layer is the wave.
In a third aspect, the present invention further provides a method for manufacturing a battery heat dissipation explosion-proof device, which is used for manufacturing the battery heat dissipation explosion-proof device, and includes the following steps:
providing an explosion-proof box, and suspending the battery in the explosion-proof box; and filling the intelligent heat dissipation material into the explosion-proof box, so that the intelligent heat dissipation material surrounds the battery.
Further, the method comprises the following steps:
step S1: providing an explosion-proof box, and suspending the supporting part and the limiting part in the explosion-proof box;
step S2: the battery is arranged on the supporting part, and the limiting part is positioned between the battery and the side wall of the explosion-proof box;
step S3: the intelligent heat dissipation material is filled in the explosion-proof box, so that the intelligent heat dissipation material surrounds the battery, the supporting part and the limiting part.
Compared with the prior art, the invention has the following beneficial effects:
a) according to the aloe gel in the intelligent heat dissipation material, the molecular activity of the aloe gel can change along with the change of temperature, and when the temperature of the battery is too high, the molecular activity of the aloe gel is high, and the heat dissipation speed is accelerated; when the temperature of the battery is too low, the molecular activity of the aloe gel becomes low, the heat dissipation rate is reduced, and therefore intelligent heat dissipation can be achieved.
b) The intelligent heat dissipation material provided by the invention comprises 5-24 wt% of intelligent isopropyl acrylamide polymer and 5-6 wt% of aloe gel, the molecular activities of the two materials can change along with the change of temperature, and when the temperature of the battery is too high, the molecular activities of the intelligent isopropyl acrylamide polymer and the aloe gel are high, and the heat dissipation speed is accelerated; when the temperature of the battery is too low, the molecular activity of the intelligent isopropyl acrylamide polymer and the aloe gel becomes low, the heat dissipation rate is reduced, and therefore intelligent heat dissipation is achieved.
c) The intelligent heat dissipation material provided by the invention limits the contents of the intelligent isopropyl acrylamide polymer and the aloe gel in the above range, so that the heat dissipation rate can reach a balance point, and the heat dissipation rate of the intelligent heat dissipation material is always matched with the heat dissipation rate required by the battery under the conditions of overhigh and overlow temperature of the battery.
d) The intelligent heat dissipation material provided by the invention is a nano heat conduction colloid material, and has better buffering performance, so that the danger of explosion of the battery under the condition of overhigh temperature can be reduced.
e) According to the battery heat dissipation explosion-proof device provided by the invention, the explosion-proof box is filled with the intelligent heat dissipation material, and the battery is positioned in the intelligent heat dissipation material. Because the molecular activity of the intelligent heat dissipation material can change along with the change of the temperature, when the temperature of the battery is overhigh, the temperature of the intelligent heat dissipation material is increased through heat transfer, the molecular activity is increased, the heat dissipation speed of the intelligent heat dissipation material is accelerated, the heat exchange between the battery and the external environment is accelerated, and the quick heat dissipation of the battery is realized; when the battery temperature is too low, the temperature of the external environment is low, the temperature of the intelligent heat dissipation material is also low, the molecular activity is low, the heat dissipation rate of the intelligent heat dissipation material is reduced, and the heat dissipated by the battery in the working process can be stored in the explosion-proof box, so that the heat preservation of the battery is realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is an infrared test chart of the heat dissipation rate of the intelligent heat dissipation material provided by the present invention;
FIG. 2 is a schematic structural diagram of a heat dissipation and explosion protection device for a battery according to the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural view of a support portion and a limiting portion of the heat dissipation and explosion-proof device for a battery according to the present invention;
fig. 5 is a schematic structural diagram of a heat dissipation groove of an explosion-proof box in the heat dissipation and explosion-proof device for a battery provided by the invention.
Reference numerals:
1-explosion-proof box; 2-a battery; 3-a support part; 4-a limiting part; 5-heat dissipation groove.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention.
In a first aspect, the present invention provides a smart heat dissipating material comprising aloe vera gel.
Compared with the prior art, the intelligent heat dissipation material contains the aloe gel, when the temperature of the battery is too high, the molecular activity of the aloe gel is high, and the heat dissipation speed is accelerated; when the temperature of the battery is too low, the molecular activity of the aloe gel becomes low, the heat dissipation rate is reduced, and therefore intelligent heat dissipation can be achieved.
It can be known from the test that, as shown in fig. 1, when the temperature is higher than 10 ℃, compared with the commonly used fine-pore silica gel with a specific heat capacity of 0.92KJ/(kg. ℃) and water with a specific heat capacity of 4.2KJ/(kg. ℃), the specific heat capacity of the intelligent heat dissipation material is kept at about 5.8KJ/(kg. ℃) and is relatively stable, which indicates that the intelligent heat dissipation material can better absorb heat, that is, the heat dissipation efficiency of the intelligent heat dissipation material is higher, so that the temperature of the battery can be rapidly reduced, and the temperature of the battery can be kept not to change too much.
Specifically, the intelligent heat dissipation material is a mixed type semi-solid material, which includes an intelligent nano material and an inorganic material. The intelligent nano material comprises intelligent isopropyl acrylamide polymer and aloe gel, the inorganic material comprises silica gel (such as nano silica gel), graphene (such as crystalline flake graphene powder), glass fiber and sintered ceramic clay, and the intelligent heat dissipation material comprises, by mass, 5% -24% of the intelligent isopropyl acrylamide polymer, 5% -6% of the aloe gel, 24% -75% of the silica gel, 5% -12% of the graphene and 10% -35% of the sintered ceramic clay.
It is noted that the above-mentioned intelligent isopropylacrylamide polymer has the formula [ C ]6H11NO]nThe molecular formula of the aloe gel is C15H10O5The intelligent means that the molecular activity of the intelligent isopropyl acrylamide polymer and the aloe gel can change along with the change of temperature, for example, when the environmental temperature is high, the molecular activity of the intelligent isopropyl acrylamide polymer and the aloe gel is high, and the heat dissipation speed is high, and when the environmental temperature is low, the molecular activity of the intelligent isopropyl acrylamide polymer and the aloe gel is low, and the heat dissipation speed is low. In addition, it should be noted that the ceramic clay after sintering is adopted because the ceramic clay can burn off organic matters through sintering to form a nano effect, so that the ceramic clay can be better mixed with nano silica gel, and the uniformity of the intelligent heat dissipation material is improved.
Compared with the prior art, the intelligent heat dissipation material provided by the invention comprises 5-24 wt% of intelligent isopropyl acrylamide polymer and 5-6 wt% of aloe gel, the molecular activities of the two materials can change along with the change of temperature, and when the temperature of the battery is overhigh, the molecular activities of the intelligent isopropyl acrylamide polymer and the aloe gel are high, and the heat dissipation speed is accelerated; when the temperature of the battery is too low, the molecular activity of the intelligent isopropyl acrylamide polymer and the aloe gel becomes low, the heat dissipation rate is reduced, and therefore intelligent heat dissipation is achieved. Meanwhile, the content of the intelligent isopropyl acrylamide polymer and the content of the aloe gel are limited in the range, so that the heat dissipation rate can reach a balance point, and the heat dissipation rate of the intelligent heat dissipation material is always matched with the heat dissipation rate required by the battery under the conditions of overhigh and overlow temperature of the battery.
In addition, the intelligent heat dissipation material is a nanometer heat conduction colloid material, and has good buffering performance, so that the danger of explosion of the battery under the condition of overhigh temperature can be reduced.
In order to take account of both intelligent heat dissipation and mechanical strength, in the intelligent heat dissipation material, the mass percentage of the intelligent nano material should be controlled to be 7% -50%, and the mass percentage of the inorganic material should be controlled to be 50% -93%. The proportion of the two is limited in the range, the mechanical strength of the intelligent heat dissipation material can be improved under the condition of guaranteeing intelligent heat dissipation of the intelligent material, so that the buffering effect can be better played, and the explosion condition of the battery due to collision is further reduced.
TiO may be added to the smart material in order to expand the use temperature range of the smart heat dissipation material2And/or Al2O3，TiO 25 to 12 percent of Al2O3The mass percentage of (B) is 5-24%. The specific contents of the two components need to be properly selected according to the balance of the requirement on the cooling efficiency of the batteries in different areas under the working environment temperature and the cooling cost. Specifically, when the ambient temperature of the battery is 17-34 ℃, TiO in the intelligent heat dissipation material29 to 12 percent of Al2O3The mass percentage of (A) is 5-14%; when the working environment temperature of the battery is-2-16 ℃, TiO in the intelligent heat dissipation material 25 to 9 percent of Al2O3The mass percentage of (A) is 14-24%. TiO in intelligent heat dissipation material in southern areas with higher ambient temperature2The ratio is high because of TiO2The water-based ultraviolet-resistant paint has good hydrophilicity, uniform heat dispersion effect on ultraviolet rays, good heat dispersion and strong ultraviolet resistance; in the north of lower temperatureAl in intelligent heat-dissipating material for local area2O3The ratio is high because of Al2O3The low temperature resistance of the heat dissipation material is good, the heat dissipation material can be repeatedly utilized, and the heat dissipation material still has good activity at low temperature, so that the heat dissipation stability of the intelligent heat dissipation material is improved.
Specifically, the preparation method of the intelligent heat dissipation material may include the following steps:
step a: compounding silica gel and an intelligent isopropyl acrylamide polymer to obtain an intelligent isopropyl acrylamide polymer compound, which is usually powder; mixing the intelligent isopropyl acrylamide polymer compound with aloe gel to obtain jelly;
compounding graphene and the sintered ceramic clay to obtain a graphene compound;
step b: mixing the jelly with graphene composite and TiO2And Al2O3And (4) uniformly mixing to obtain the intelligent heat dissipation material.
In a second aspect, the present invention provides a battery heat dissipation explosion-proof device, as shown in fig. 2 to 5, including an explosion-proof box 1 and an intelligent heat dissipation material filled inside the explosion-proof box 1, when in use, a battery 2 is located in the explosion-proof box 1, and the intelligent heat dissipation material surrounds the battery 2.
Compared with the prior art, the battery heat dissipation explosion-proof device provided by the invention has the advantages that the intelligent heat dissipation material is filled in the explosion-proof box 1, and the battery 2 is positioned in the intelligent heat dissipation material. Because the molecular activity of the intelligent heat dissipation material can change along with the change of the temperature, when the temperature of the battery 2 is overhigh, the temperature of the intelligent heat dissipation material is increased through heat transfer, the molecular activity is increased, the heat dissipation speed of the intelligent heat dissipation material is accelerated, the heat exchange between the battery 2 and the external environment is accelerated, and the quick heat dissipation of the battery 2 is realized; when the temperature of the battery 2 is too low, the temperature of the external environment is low, the temperature of the intelligent heat dissipation material is also low, the molecular activity is low, the heat dissipation rate of the intelligent heat dissipation material is reduced, and the heat dissipated by the battery 2 in the working process can be stored in the explosion-proof box 1, so that the heat preservation of the battery 2 is realized.
Meanwhile, as the explosion-proof box 1 is filled with the colloidal intelligent heat dissipation material, the intelligent heat dissipation material can buffer the battery 2 in the collision process, so that the possibility of explosion of the battery 2 in the collision process is reduced.
In order to improve the uniformity of the explosion resistance of the above-mentioned heat dissipation explosion-proof device for a battery, the central point of the explosion-proof box 1 should coincide with the central point of the battery 2. The clearance that can guarantee between six faces of battery 2 and the explosion-proof case 1 inner wall is the same basically like this, that is to say, the thickness of the intelligent heat radiation material of packing between battery 2 and explosion-proof case 1 is the same basically to guarantee the uniformity of battery heat dissipation explosion-proof equipment's explosion-proof nature, avoid leading to the problem that the easy point of exploding appears because the intelligent heat radiation material of certain face or certain point of battery 2 is too thin.
In order to ensure that the battery 2 can be always positioned in the intelligent heat dissipation material, the battery heat dissipation explosion-proof device can further comprise a supporting part 3 positioned inside the explosion-proof box 1, and the battery 2 is placed on the supporting part 3. Because intelligent heat dissipation material is semisolid colloid material, mechanical strength is lower, and battery 2 can remove to explosion-proof case 1's bottom under the effect of gravity for battery 2 and explosion-proof case 1 bottom clearance diminish, and intelligent heat dissipation material attenuation, in case battery 2 receives the collision, easy and explosion-proof case 1's contact collision produces. And on battery 2 placed supporting part 3 in, supporting part 3 can play the supporting role to battery 2, has the limiting displacement of vertical direction to battery 2, guarantees that the clearance between battery 2 and explosion-proof box 1 bottom is in safety range.
Similarly, in order to limit the battery 2 in the horizontal direction, the above-mentioned heat dissipation and explosion prevention device for a battery may further include a limiting portion 4, and the limiting portion 4 is located between the side wall of the battery 2 and the inner wall of the explosion-proof case 1. Explosion-proof case 1 and battery 2 rock the in-process at the level, spacing portion 4 has the limiting displacement of horizontal direction to battery 2, guarantees that the clearance between battery 2 and the explosion-proof case 1 lateral wall is in safety range.
The safety ranges of the gap between the battery 2 and the bottom of the explosion-proof case 1 and the gap between the battery 2 and the side wall of the explosion-proof case 1 are 0.3mm to 3 mm.
As for the structure of the support 3, specifically, it may be a plate-like structure like corrugated paper, including a plurality of hard glue layers and a support glass fiber layer between the plurality of hard glue layers, the cross section of the support glass fiber layer is wave-shaped, and the hard glue layer may be made of the above-mentioned smart heat dissipation material and coarse ceramic clay.
In order to increase the filling volume of the intelligent heat dissipation material, the intelligent heat dissipation material can be filled between the glass fiber layer of the support part and the hard glue layer. Like this, under the prerequisite that guarantees that supporting part 3 has sufficient mechanical properties, improved intelligent heat radiation material's filled volume, and then improved supporting part 3's intelligent heat dispersion and shock-absorbing capacity.
Similarly, the limiting part 4 may also be a plate-shaped structure similar to corrugated paper, and includes multiple layers of soft rubber layers and a limiting part glass fiber layer located between the multiple layers of soft rubber layers, the cross section of the limiting part glass fiber layer is wave-shaped, and the soft rubber layer may be made of the above-mentioned intelligent heat dissipation material. An intelligent heat dissipation material can be filled between the limiting part glass fiber layer and the soft rubber layer.
It should be noted that the hard adhesive layer and the soft adhesive layer are opposite, that is, the soft adhesive layer has a lower hardness than the hard adhesive layer, and the hard adhesive layer has a higher hardness than the soft adhesive layer. The reason that sets up like this is that, when battery 2 installs on electric automobile, electric automobile's vertical vibration often is greater than the level and rocks, consequently, and the mechanical strength of supporting part 3 needs to be greater than spacing portion 4's mechanical strength, simultaneously, compares in the same mode of setting of supporting part 3 and spacing portion 4's mechanical strength, and spacing portion 4's mechanical properties is less than supporting part 3's mechanical properties, can also further improve above-mentioned intelligent heat abstractor's shock-absorbing capacity.
In order to improve the heat exchange efficiency of the explosion-proof box 1, the inner surface and/or the outer surface of the explosion-proof box 1 can be provided with the heat dissipation grooves 5, the heat dissipation grooves 5 are used as temperature-adjusting regenerators, and the heat dissipation grooves 5 can accelerate the heat exchange between the interior of the explosion-proof box 1 and the working environment, so that the battery explosion accident caused by low heat exchange efficiency is avoided. It can be understood that, when the inner surface of the explosion-proof box 1 is provided with the heat dissipation grooves 5, the intelligent heat dissipation material is also filled in the heat dissipation grooves 5, so that the contact area between the intelligent heat dissipation material and the explosion-proof box 1 can be increased, the heat dissipation efficiency can be improved, and the intelligent heat dissipation material can be prevented from being separated from the explosion-proof material.
In a third aspect, the invention further provides a manufacturing method of the battery heat dissipation explosion-proof device, which comprises the following steps:
providing an explosion-proof box, and suspending the battery in the explosion-proof box; and filling the intelligent heat dissipation material into the explosion-proof box, so that the intelligent heat dissipation material surrounds the battery.
The beneficial effects of the manufacturing method of the battery heat dissipation explosion-proof device provided by the invention are basically the same as those of the battery heat dissipation explosion-proof device, and are not repeated herein.
Specifically, the manufacturing method of the battery heat dissipation explosion-proof device comprises the following steps:
step S1: providing an explosion-proof box, and suspending the supporting part and the limiting part in the explosion-proof box;
step S2: the battery is arranged on the supporting part, and the limiting part is positioned between the battery and the side wall of the explosion-proof box;
step S3: the intelligent heat dissipation material is filled in the explosion-proof box, so that the intelligent heat dissipation material surrounds the battery, the supporting part and the limiting part.
In step S1, the method for manufacturing the supporting portion includes the following steps: mixing an intelligent heat dissipation material with the coarse ceramic clay to prepare hard glue, wherein the mass ratio of the intelligent heat dissipation material to the coarse ceramic clay is 0.5: 1-1: 1.5, and the particle size of the coarse ceramic clay is more than 0.5 mm; providing a supporting part glass fiber layer, and coating the hard glue on the surface of the supporting part glass fiber layer to form a hard glue layer; and filling the intelligent heat dissipation material into a gap between the hard adhesive layer and the glass fiber layer of the support part to obtain the support part.
In step S1, the manufacturing method of the stopper portion is substantially the same as the manufacturing method of the support portion, and includes the following steps: providing a limiting part glass fiber layer, and coating the intelligent heat dissipation material on the surface of the limiting part glass fiber layer to form a soft adhesive layer; the intelligent heat dissipation material is filled between the soft rubber layer and the limiting part glass fiber layer to obtain the limiting part.
The preparation method of the intelligent heat dissipation material comprises the following steps: and uniformly mixing the silica gel, the intelligent isopropyl acrylamide polymer, the aloe gel, the graphene and the sintered ceramic clay to obtain the intelligent heat dissipation material.
Specifically, the preparation method of the intelligent heat dissipation material comprises the following steps:
step a: compounding silica gel and an intelligent isopropyl acrylamide polymer to obtain an intelligent isopropyl acrylamide polymer compound, which is usually powder; mixing the intelligent isopropyl acrylamide polymer compound with aloe gel to obtain jelly;
compounding graphene and the sintered ceramic clay to obtain a graphene compound;
step b: mixing the jelly with graphene composite and TiO2And Al2O3And (4) uniformly mixing to obtain the intelligent heat dissipation material.
In the process of preparing the intelligent material, in order to ensure that the raw materials have good dispersibility, the silica gel can be a nano silica gel solution prepared from 1-100 nm pore gel, the particle size range of the graphene is 100-1 mu m, the particle size of the sintered ceramic clay is less than 5mm, and the TiO is2And Al2O3The particle diameter of (B) is controlled to 10nm to 1 μm.
Example 1
The embodiment provides an intelligent heat dissipation material, which comprises, by mass, 5% of an intelligent isopropyl acrylamide polymer, 6% of aloe vera gel, 24% of silica gel, 5% of graphene, 33% of sintered ceramic clay, and TiO 25％、Al2O322％。
The preparation method of the intelligent heat dissipation material comprises the following steps:
compounding 24 parts (by mass) of silica gel and 5 parts of intelligent isopropyl acrylamide polymer to obtain an intelligent isopropyl acrylamide polymer compound; mixing the intelligent isopropyl acrylamide polymer compound with 6 parts of aloe gel to obtain a jelly; compounding 5 parts of graphene and 33 parts of sintered ceramic clay to obtain a graphene compound; compounding the jelly with graphene, 5 parts of TiO2And 22 parts of Al2O3And (4) uniformly mixing to obtain the intelligent heat dissipation material.
Example 2
The embodiment provides an intelligent heat dissipation material, which comprises, by mass, 24% of an intelligent isopropyl acrylamide polymer, 5% of aloe vera gel, 32% of silica gel, 12% of graphene, 10% of sintered ceramic clay, and TiO 212％、Al2O35％。
The preparation method of the intelligent heat dissipation material comprises the following steps:
compounding 32 parts (by mass) of silica gel and 24 parts of intelligent isopropyl acrylamide polymer to obtain an intelligent isopropyl acrylamide polymer compound; mixing the intelligent isopropyl acrylamide polymer compound with 5 parts of aloe gel to obtain jelly; compounding 5 parts of graphene and 10 parts of sintered ceramic clay to obtain a graphene compound; compounding the jelly with graphene, 12 parts of TiO2And 5 parts of Al2O3And (4) uniformly mixing to obtain the intelligent heat dissipation material.
Example 3
The embodiment provides an intelligent heat dissipation material, which comprises, by mass, 6% of an intelligent isopropyl acrylamide polymer, 5.5% of aloe vera gel, 43.5% of silica gel, 6% of graphene, 16% of sintered ceramic clay, and TiO 210％、Al2O313％。
The preparation method of the intelligent heat dissipation material comprises the following steps:
compounding 43.5 parts (by mass) of silica gel and 6 parts of intelligent isopropyl acrylamide polymer to obtain an intelligent isopropyl acrylamide polymer compound; mixing the intelligent isopropyl acrylamide polymer compound with 5.5 parts of aloe gel to obtain a jelly; compounding 6 parts of graphene with 16 parts of sintered ceramic clay to obtain a graphene compound; compounding the jelly with graphene, and 10 parts of TiO2And 13 parts of Al2O3And (4) uniformly mixing to obtain the intelligent heat dissipation material.
Example 4
The embodiment provides an intelligent heat dissipation material, which comprisesThe mass percentages of the components are 6 percent of intelligent isopropyl acrylamide polymer, 5.5 percent of aloe gel, 43.5 percent of silica gel, 6 percent of graphene, 16 percent of sintered ceramic clay and TiO 28％、Al2O315％。
The preparation method of the intelligent heat dissipation material comprises the following steps:
compounding 43.5 parts (by mass) of silica gel and 6 parts of intelligent isopropyl acrylamide polymer to obtain an intelligent isopropyl acrylamide polymer compound; mixing the intelligent isopropyl acrylamide polymer compound with 5.5 parts of aloe gel to obtain a jelly; compounding 6 parts of graphene with 16 parts of sintered ceramic clay to obtain a graphene compound; compounding the jelly with graphene, 8 parts of TiO2And 15 parts of Al2O3And (4) uniformly mixing to obtain the intelligent heat dissipation material.
Example 5
The embodiment provides an intelligent heat dissipation material, which comprises, by mass, 5% of an intelligent isopropyl acrylamide polymer, 5% of aloe vera gel, 75% of silica gel, 5% of graphene, 10% of sintered ceramic clay, and TiO 25％、Al2O35％。
The preparation method of the intelligent heat dissipation material comprises the following steps:
compounding 75 parts (by mass) of silica gel and 5 parts of intelligent isopropyl acrylamide polymer to obtain an intelligent isopropyl acrylamide polymer compound; mixing the intelligent isopropyl acrylamide polymer compound with 5 parts of aloe gel to obtain jelly; compounding 5 parts of graphene and 10 parts of sintered ceramic clay to obtain a graphene compound; compounding the jelly with graphene, and 5 parts of TiO2And 5 parts of Al2O3And (4) uniformly mixing to obtain the intelligent heat dissipation material.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (5)

1. A battery heat dissipation explosion-proof device is characterized by comprising an explosion-proof box and an intelligent heat dissipation material filled in the explosion-proof box;
the intelligent heat dissipation material comprises aloe gel, intelligent isopropyl acrylamide polymer, silica gel, graphene, glass fiber and sintered ceramic clay;
the intelligent heat dissipation material comprises, by mass, 5-24% of an intelligent isopropyl acrylamide polymer, 5-6% of aloe gel, 32-43.5% of silica gel, 5-12% of graphene and 10-35% of sintered ceramic clay;
the molecular formula of the intelligent isopropyl acrylamide polymer is [ C ]6H11NO]nThe molecular formula of the aloe gel is C15H10O5The molecular activity of the intelligent isopropyl acrylamide polymer and the aloe vera gel can change along with the change of temperature;
the intelligent heat dissipation material is a mixed type semi-solid material;
when the intelligent heat dissipation material is used, the battery is located in the explosion-proof box, and the intelligent heat dissipation material surrounds the battery;
the battery heat dissipation explosion-proof device also comprises a supporting part positioned in the explosion-proof box, and the battery is arranged on the supporting part;
the supporting part is of a corrugated paper-shaped plate-shaped structure and comprises a plurality of hard glue layers and a supporting part glass fiber layer positioned between the plurality of hard glue layers, and the cross section of the supporting part glass fiber layer is wavy;
intelligent heat dissipation materials are filled between the glass fiber layer of the supporting part and the hard rubber layer;
and the inner surface and/or the outer surface of the explosion-proof box are/is provided with heat dissipation grooves.
2. The battery heat dissipation explosion protection device of claim 1, wherein the smart heat dissipation material further comprises TiO2And/or Al2O3，TiO25 to 12 percent of Al2O3The mass percentage of (B) is 5-24%.
3. The heat dissipation and explosion prevention device for batteries according to claim 1, further comprising a limiting part, wherein the limiting part is located between the side wall of the battery and the inner wall of the explosion prevention box.
4. The battery heat dissipation and explosion prevention device according to claim 3, wherein the limiting portion is a corrugated paper-like plate-shaped structure and comprises a plurality of soft adhesive layers and a limiting portion glass fiber layer located between the plurality of soft adhesive layers, and the cross section of the limiting portion glass fiber layer is wavy.
5. A method for manufacturing a heat dissipation and explosion prevention device for a battery, which is used for manufacturing the heat dissipation and explosion prevention device for the battery as claimed in any one of claims 3 to 4, and comprises the following steps:
step S1: providing an explosion-proof box, and suspending the supporting part and the limiting part in the explosion-proof box;
step S2: the battery is arranged on the supporting part, and the limiting part is positioned between the battery and the side wall of the explosion-proof box;
step S3: the intelligent heat dissipation material is filled in the explosion-proof box, so that the intelligent heat dissipation material surrounds the battery, the supporting part and the limiting part.
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Publication number Priority date Publication date Assignee Title
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CN103554356A (en) * 2013-10-25 2014-02-05 东南大学 Preparation method and application method of hydrogel for intelligent temperature control
CN104848470A (en) * 2015-02-09 2015-08-19 钱鸿斌 Nanometer material, manufacturing method thereof and dehumidification device and method applying nanometer material
CN106356588A (en) * 2015-07-15 2017-01-25 广东万锦科技股份有限公司 Preparation method of thermally conductive silica gel composite phase change material for battery thermal management system
CN107383560A (en) * 2017-09-04 2017-11-24 厦门科新材料有限公司 A kind of high efficiency composition heat sink material for semiconductor devices and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103342994A (en) * 2013-06-26 2013-10-09 王克山 Cooling and heat-conducting composite material, preparation method thereof, cooling mat rubber core manufactured by using composite material and cooling mat including cooling mat rubber core
CN103554356A (en) * 2013-10-25 2014-02-05 东南大学 Preparation method and application method of hydrogel for intelligent temperature control
CN104848470A (en) * 2015-02-09 2015-08-19 钱鸿斌 Nanometer material, manufacturing method thereof and dehumidification device and method applying nanometer material
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CN107383560A (en) * 2017-09-04 2017-11-24 厦门科新材料有限公司 A kind of high efficiency composition heat sink material for semiconductor devices and preparation method thereof

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