CN115340704A - Manufacturing method of impact-resistant material, impact-resistant piece, battery box and battery pack - Google Patents
Manufacturing method of impact-resistant material, impact-resistant piece, battery box and battery pack Download PDFInfo
- Publication number
- CN115340704A CN115340704A CN202211166297.XA CN202211166297A CN115340704A CN 115340704 A CN115340704 A CN 115340704A CN 202211166297 A CN202211166297 A CN 202211166297A CN 115340704 A CN115340704 A CN 115340704A
- Authority
- CN
- China
- Prior art keywords
- impact
- resistant
- newtonian fluid
- battery box
- silica gel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 107
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000741 silica gel Substances 0.000 claims abstract description 35
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 35
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 238000007865 diluting Methods 0.000 claims abstract description 5
- 238000004073 vulcanization Methods 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000005187 foaming Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims 1
- 239000004945 silicone rubber Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 22
- 238000001816 cooling Methods 0.000 description 19
- 239000000126 substance Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000006261 foam material Substances 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
- C08J9/42—Impregnation with macromolecular compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The application discloses a manufacturing method of an impact-resistant material, an impact-resistant piece, a battery box and a battery pack, and relates to the technical field of batteries. The manufacturing method of the impact-resistant material comprises the steps of obtaining foamed silica gel; diluting the non-Newtonian fluid material by using a solvent, and infiltrating the diluted non-Newtonian fluid material into pores of the foamed silica gel; the solvent is volatilized to obtain the impact-resistant material. The impact-resistant material obtained by the manufacturing method has the characteristics of both silica gel and non-Newtonian fluid material, and can play a better impact resistance capability when being extruded at low speed and light degree or impacted at high speed, so that a device protected by the impact-resistant material is not easy to damage due to impact. The anti-impact piece is made of the anti-impact material, and the battery box and the battery pack comprise the anti-impact piece, so that the anti-impact piece has better anti-impact performance, and can protect the internal devices of the battery pack from being damaged by impact.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a manufacturing method of an impact-resistant material, an impact-resistant piece, a battery box and a battery pack.
Background
With the continuous development of the industry of pure electric vehicles, the overall size of the carried power battery pack is large, the battery pack is generally arranged at the position of a vehicle chassis, and the bottom of the battery pack is exposed at the bottom of the vehicle, so that the environment where the bottom of the battery pack is located in the actual use process is extremely complex. Road splash and obstacles impacting the battery pack may cause damage to the battery pack.
At present, in the battery pack in the related art, a common foam material or a honeycomb structural component is adopted between a battery box bottom plate and a liquid cooling plate as a buffering and energy-absorbing interlayer for absorbing impact force and reducing damage of external impact of a battery box to devices inside the battery box. However, the impact resistance of the bottom of the battery box in the related art is still not good enough, which easily causes damage to the devices in the battery pack.
In view of this, the present application is specifically made.
Disclosure of Invention
The application aims to provide a manufacturing method of an impact-resistant material, an impact-resistant piece, a battery box and a battery pack. The anti-impact material and the anti-impact piece prepared by the manufacturing method, and the battery box and the battery pack containing the anti-impact piece have better anti-impact performance, and can protect devices inside the battery pack from being damaged difficultly.
The application is realized as follows:
in a first aspect, the present application provides a method for making an impact resistant material, comprising:
obtaining foamed silica gel;
diluting the non-Newtonian fluid material by using a solvent, and infiltrating the diluted non-Newtonian fluid material into pores of the foamed silica gel;
the solvent is volatilized to obtain the impact-resistant material.
In an alternative embodiment, the solvent is ethanol.
In alternative embodiments, the non-Newtonian fluid material is a concentrated solution, suspension or melt of a high molecular weight polymer.
In an alternative embodiment, the non-newtonian fluid material comprises 10-20 wt.% of the impact resistant material.
In an alternative embodiment, the step of infiltrating the diluted non-newtonian fluid material into the pores of the foamed silicone gel comprises: the foamed silica gel is immersed in the diluted non-newtonian fluid material.
In an alternative embodiment, the step of obtaining a foamed silica gel comprises:
and carrying out primary vulcanization on the mixture containing the foaming silica gel raw material and the curing agent.
In a second aspect, the present application provides a method for making an impact resistant article, comprising:
obtaining an impact-resistant material prepared by the manufacturing method in any one of the above-mentioned first aspect;
and (3) putting the impact-resistant material into a mould for secondary vulcanization.
In an alternative embodiment, the temperature of the secondary vulcanization is between 110 ℃ and 120 ℃ for 13 to 20min.
In a third aspect, the present application provides an impact-resistant article made by the method of making an impact-resistant article according to any of the embodiments of the second aspect.
In a fourth aspect, the present application provides a battery box for accommodating an electric core, wherein the impact resistant member of the foregoing embodiment is laid on the inner side of the battery box.
In a fifth aspect, the present application provides a battery pack, including a battery cell and the battery box of the foregoing embodiment, the battery cell is disposed in the battery box.
In an optional embodiment, the battery pack further comprises a liquid cooling plate, the liquid cooling plate is arranged in the battery box and is spaced from the bottom of the battery box, the impact-resistant piece is arranged between the bottom of the battery box and the liquid cooling plate, and the battery core is arranged on the liquid cooling plate.
The application has the following beneficial effects:
the application provides a manufacturing method of an impact-resistant material, which comprises the steps of obtaining foamed silica gel; diluting the non-Newtonian fluid material by using a solvent, and infiltrating the diluted non-Newtonian fluid material into pores of the foamed silica gel; the solvent is volatilized to obtain the impact-resistant material. The impact-resistant material obtained by the manufacturing method can keep a loose elastic state when being subjected to low-speed and light extrusion, absorbs impact deformation, does not transmit the deformation to a protected device, and is easy to recover the original shape according to the characteristics of the foaming silica gel. The non-Newtonian fluid material may be capable of instantaneously "stiffening" when subjected to high speed impacts due to the shear thickening properties of the non-Newtonian fluid material within the impact resistant material, providing sufficient resistance to deformation such that a device protected by the impact resistant material is not damaged by local stress concentrations caused by external severe impacts. Therefore, the impact-resistant material has better impact resistance, and a device protected by the impact-resistant material is not easy to damage due to impact.
The battery box and the battery pack provided by the embodiment of the application comprise the impact-resistant piece, so that the battery box and the battery pack have better impact resistance, and the internal devices of the battery pack can be protected from being damaged by impact.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic illustration of a method of making an impact resistant material according to one embodiment of the present disclosure;
FIG. 2 is a schematic illustration of a method of making an impact resistant article according to one embodiment of the present disclosure;
FIG. 3 is a schematic view of an impact resistant member according to one embodiment of the present application;
FIG. 4 is a schematic view of an embodiment of the present application illustrating an assembly of a battery box and a liquid cooling plate;
fig. 5 is an exploded view of a battery box and a liquid cooled plate in an embodiment of the present application.
Description of the main element symbols: 100-a battery box; 110-impact resistant member; 120-a frame; 130-a backplane; 200-liquid cold plate.
Detailed Description
Some shock-resistant parts in current battery package adopt the material that has stronger rigidity to make, and it has following shortcoming:
1. the anti-impact component is made of a material with high hardness, and even if the bottom of the battery pack only has a shallow extrusion phenomenon, the deformation quantity of the anti-impact component can be transmitted to the other side of the anti-impact component through one side of the anti-impact component, so that the device protected by the anti-impact component is damaged;
2. when the mounting inner cavity of the anti-impact part is irregular in shape, the placed anti-impact part is difficult to completely adhere to the surface of the inner cavity, so that the phenomenon that the part is not filled can be generated, and devices in the battery pack can not be completely protected;
3. the material has stronger plasticity, even if the material is slightly (shallowly) impacted, the material is easy to deform, cannot rebound and recover, cannot be used continuously, must be replaced and has high maintenance cost.
In addition, if a soft material is adopted as the impact-resistant component, although a certain deformation can be absorbed under light impact, the protected device is not influenced. However, in the case of high-speed impact or large impact depth, the flexible impact-resistant part has a large deformation amount, so that the inner side (the side facing the protected device) of the flexible impact-resistant part also has a remarkable bulge, and the protection effect is lost. When non-Newtonian fluid substances are used as the impact-resistant component in the related art, the isolation layer is generally designed to carry the non-Newtonian fluid substances, but the isolation layer is easy to break, so that the non-Newtonian fluid is spilled.
It is obvious that, in the prior art, no matter a hard or soft material is adopted as an impact-resistant part, the protection device can not be protected under two different conditions of high speed, deep impact, low speed and shallow impact, and when a non-Newtonian fluid is adopted as the impact-resistant part, the problem that the non-Newtonian fluid substance is easy to overflow is also faced.
In order to solve the problem that the impact resistance of an impact-resistant material in the prior art is poor, the embodiment of the application provides the impact-resistant material, a manufacturing method of the impact-resistant material, and a battery box and a battery pack which comprise the impact-resistant material manufactured by the manufacturing method.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The features and properties of the present application are described in further detail below with reference to examples.
Fig. 1 is a schematic view of a method of making an impact resistant material according to an embodiment of the present disclosure. As shown in fig. 1, a method for manufacturing an impact-resistant material provided in an embodiment of the present application includes:
and step S100, obtaining the foaming silica gel.
In the present embodiment, the foamed silica gel may be prepared by an existing process or purchased directly. The foamed silica gel contains a large number of pores, and the pores are not closed structures, so that the non-Newtonian fluid can permeate. The foamed silica gel may be a honeycomb material (pore array distributed and divided) or an open-cell foam material (pores interconnected) according to the state of the pores.
The foaming silica gel can be prepared by carrying out primary vulcanization on a mixture containing a foaming silica gel raw material and a curing agent. It should be understood that the expression "primary vulcanization" is a vulcanization process, and that "primary vulcanization" is not a limitation on the number of vulcanization steps, but is to be distinguished from the subsequent "secondary vulcanization" step. Specifically, the step of vulcanizing the mixture containing the foaming silica gel raw material and the curing agent for one time comprises the following steps:
1. firstly, mixing a curing agent and a silica gel foaming raw material according to a certain proportion, and stirring for 2-3 minutes to ensure that the materials are uniformly mixed;
2. vulcanizing the mixture at the temperature of 110-120 ℃ for 13-20 min to solidify the mixture.
Optionally, the usage amount of the silica gel foaming raw material is 35-65 wt.% of the final impact-resistant material; the curing agent is used in an amount of 25 to 40wt.% of the final impact-resistant material.
And S200, diluting the non-Newtonian fluid material by using a solvent, and infiltrating the diluted non-Newtonian fluid material into pores of the foamed silica gel.
In the embodiment of the present application, the non-newtonian fluid material may be selected from a concentrated solution, a suspension, or a melt of a high molecular polymer, and since the non-newtonian fluid material has a relatively high viscosity, it may be difficult to uniformly penetrate into the foamed silica gel, so that the non-newtonian fluid material is diluted to reduce the viscosity of the fluid and then penetrates into the pores of the foamed silica gel. In this embodiment, the foamed silicone gel can be immersed in the diluted non-Newtonian fluid material, such that the diluted non-Newtonian fluid material is sufficiently immersed in the foamed material.
Non-newtonian fluid materials have a degree of fluidity and, when subjected to high shear deformation, "harden" instantaneously, producing a force that opposes the deformation. Therefore, when the non-Newtonian fluid material is subjected to strong and high-speed impact, the non-Newtonian fluid material cannot generate large deformation instantly, and even if the impacted surface is subjected to the strong impact, obvious bulges are not generated on the other surface, so that the device is prevented from being influenced by stress concentration, and the device can be protected. Under the condition of low-speed and shallow impact, the non-Newtonian fluid material can also deform adaptively, and the deformation amount is not large, so that the non-Newtonian fluid material can be fully absorbed by the material, and the device is protected.
Alternatively, the non-newtonian fluid material may be selected from polyethylene, polyacrylamide, polyvinyl chloride, rubber solutions, or melts, solutions, suspensions, etc. of various engineering plastics, chemical fibers.
In this embodiment, the solvent may be selected to be ethanol. Ethanol can dissolve various organic materials, is a good solvent, and has low cost. And the ethanol is easy to volatilize, thereby being beneficial to removal. Of course, in alternative embodiments, other solvents that can dilute the non-newtonian fluid material and that can be easily removed may be selected.
Optionally, the weight ratio of the solvent to the non-newtonian fluid material may be 1:1, with the non-newtonian fluid material being used in an amount of 10 to 20wt.%, such as 15wt.%, of the final impact-resistant material.
And step S300, volatilizing the solvent to obtain the impact-resistant material.
In an embodiment, the ethanol solvent can be completely volatilized at normal temperature, and the residual non-newtonian fluid material is uniformly distributed in the pores of the foamed silica gel to form the foamed silica gel wrapping the non-newtonian fluid material. Of course, in alternative embodiments, the temperature may be increased to increase the rate of volatilization. It should be noted that this step is intended to evaporate the solvent, and the liquid substance contained in the non-newtonian fluid material itself remains in the foamed silica gel, so as to avoid the non-newtonian fluid material itself from suffering from the physical property change caused by the loss of the components, which leads to the deterioration of the impact resistance. The reason why ethanol is used as the solvent is that the ethanol is easy to volatilize at normal temperature and is separated from the non-Newtonian fluid material without taking away the components in the non-Newtonian fluid material.
The impact-resistant material obtained through the steps has the rebound resilience of the foamed silica gel and the high-speed shear deformation resistance of the non-Newtonian fluid material, and has better impact resistance. The impact-resistant material can be subjected to adaptive deformation under the action of low-speed shearing force so as to absorb the deformation amount and avoid the influence of a protected device, and the material has resilience and can be repeatedly used; and for high-speed impact, the non-Newtonian fluid material can generate a force for resisting deformation, so that the whole body is not easy to deform, the impact force is dispersed after reaching the other surface of the material, and the device can be prevented from being damaged due to stress concentration.
The manufacturing method of the anti-impact piece provided by the embodiment of the application comprises the following steps:
the impact-resistant material obtained by the method for manufacturing the impact-resistant material according to the embodiment of the present application is obtained.
In addition, the manufacturing method of the impact-resistant piece further comprises the following steps:
and S400, putting the impact-resistant material into a mold for secondary vulcanization.
FIG. 2 is a flow chart of a method of making an impact resistant article according to one embodiment of the present disclosure. As shown in fig. 2, the impact-resistant material may be obtained in the manner of steps S100 to S300. It should be understood that the expression "secondary vulcanization" in step S400 is a vulcanization process, and the expression "secondary" is not a limitation on the number of times of vulcanization, but is distinguished from the foregoing "primary vulcanization" step. In the embodiment, the surface of the foamed silica gel wrapping the non-Newtonian fluid material can form a coating by adopting a secondary vulcanization process, and the non-Newtonian fluid material is locked in the pores of the foamed silica gel to form an elastic composite, so that the non-Newtonian fluid material is prevented from overflowing due to the deformation of the material. The final formed impact resistant article can be provided with a suitable size and shape by using a mold to perform a molding process on the impact resistant material.
Specifically, the secondary vulcanization process can be carried out at the temperature of 110-120 ℃ for 13-20 min.
And (4) demolding the product after the secondary vulcanization is finished. And then, according to the requirements of the application end, carrying out processing procedures such as avoiding, slotting and the like on the application end so as to obtain the impact-resistant piece suitable for the target scene.
FIG. 3 is a schematic view of impact resistant member 110 in one embodiment of the present application; fig. 4 is a schematic view illustrating an assembly of the battery box 100 and the liquid cooling plate 200 according to an embodiment of the present invention; fig. 5 is an exploded view of the battery box 100 and the liquid cooling plate 200 according to an embodiment of the present invention. As shown in fig. 3, the impact resistant member 110 is finally formed in a plate shape. The battery box 100 provided by the embodiment of the application can be used for accommodating battery cells, and the impact resistant piece 110 is laid on the inner side of the battery box 100. Specifically, the impact resistant member 110 may be laid on the bottom of the battery box 100 to protect devices (such as the liquid cooling plate 200, the battery cell, etc.) in the battery box 100.
The battery pack provided by the embodiment of the application comprises a battery cell and the battery box 100 provided by the embodiment, wherein the battery cell is arranged in the battery box 100.
Specifically, the battery case 100 includes a base plate 130, a frame 120, and an impact resistant member 110 provided in the above-described embodiment of the present application. The bottom plate 130 and the frame 120 enclose a receiving space of the battery case 100, and the impact resistant member 110 is laid on the bottom plate 130. In this embodiment, the battery pack further includes a liquid cooling plate 200, the liquid cooling plate 200 is disposed in the battery box 100 and spaced from the bottom plate 130, the anti-impact member 110 is filled between the bottom plate 130 and the liquid cooling plate 200, and the battery core is disposed on the liquid cooling plate 200. The liquid cooling plate 200 is used to cool the cells.
When the battery pack is assembled, the frame 120 is manufactured, and then the liquid cooling plate 200 is fixed to the battery pack. The impact resistant member 110 is then placed on the liquid-cooled plate 200 and secured in alignment with the shape of the impact resistant member 110 and the stamped shape of the liquid-cooled plate 200, and the impact resistant member 110 may be adhesively secured. Finally, the base plate 130 is fixed to the frame 120 with fasteners, and the assembly is completed.
The impact-resistant piece 110 is adopted as a filling part in the area between the liquid cooling plate 200 and the bottom plate 130, so that the bottom of the battery pack can resist impact. The impact-resistant piece 110 provided by the embodiment of the application has elasticity, and can absorb the manufacturing tolerance of the cavity between the liquid cooling plate 200 and the base plate 130 during assembly through a pre-compression design, so that the impact-resistant piece 110 can completely fit the surface of the cavity, and devices in the battery box 100 can be completely protected even if the shape of the cavity is irregular.
When the bottom of the battery pack (i.e., the base plate 130) is subjected to an impact, if the impact is low speed, the lower surface of the impact-resistant member 110 is deformed inward after the base plate 130 is deformed, thereby absorbing the impact. The deformation amount caused by the low-speed impact is usually small, and the impact-resistant piece 110 can sufficiently absorb the deformation amount, so that the upper surface of the impact-resistant piece 110 does not generate excessive stress on the liquid cooling plate 200, and the function of protecting the liquid cooling plate 200 is achieved. And impact-resistant member 110 has the resilience of silica gel, can reuse, reduces the replacement cost.
When the bottom of the battery pack is impacted at a high speed, the impact resistant member 110 is difficult to deform due to the high-speed shear deformation resistance of the non-newtonian fluid material, so that stress is concentrated only on the bottom plate 130 and the lower surface of the impact resistant member 110, and the deformation of the impact resistant member 110 is difficult to be transferred upward to the interface with the liquid-cooled plate 200. Therefore, the upward impact force of the impact resistant member 110 is dispersed over the entire upper surface, and stress concentration is not easily generated to cause damage to the liquid-cooled panel 200.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (12)
1. A method of making an impact resistant material, comprising:
obtaining foamed silica gel;
diluting a non-Newtonian fluid material by using a solvent, and infiltrating the diluted non-Newtonian fluid material into pores of the foamed silica gel;
volatilizing the solvent to obtain the impact resistant material.
2. The method of claim 1, wherein the solvent is ethanol.
3. The method of claim 1, wherein the non-Newtonian fluid material is a concentrated solution, suspension or melt of a high molecular polymer.
4. The method of claim 1, wherein the non-Newtonian fluid material is present in an amount of 10 to 20wt.% of the impact resistant material.
5. The method of claim 1, wherein the step of infiltrating the diluted non-Newtonian fluid material into the pores of the foamed silica gel comprises: and immersing the foaming silica gel into the diluted non-Newtonian fluid material.
6. The method for manufacturing an impact-resistant material according to claim 1, wherein the step of obtaining foamed silicone rubber comprises:
and carrying out primary vulcanization on the mixture containing the foaming silica gel raw material and the curing agent.
7. A method of making an impact resistant article, comprising:
obtaining an impact-resistant material manufactured by the manufacturing method of the impact-resistant material according to any one of claims 1 to 6;
and putting the impact-resistant material into a mold for secondary vulcanization.
8. The method for making an impact-resistant member according to claim 7, wherein the temperature of the secondary vulcanization is 110 ℃ to 120 ℃ for 13 to 20min.
9. An impact-resistant article, characterized by being produced by the method of manufacturing an impact-resistant article according to claim 7 or 8.
10. A battery box for accommodating battery cells, characterized in that the impact-resistant member of claim 9 is laid on the inner side of the battery box (100).
11. A battery pack, characterized by comprising a battery cell and the battery box (100) of claim 10, wherein the battery cell is disposed in the battery box (100).
12. The battery pack of claim 11, further comprising a liquid-cooled plate (200), wherein the liquid-cooled plate (200) is disposed within the battery box (100) and spaced from a bottom of the battery box (100), wherein the impact resistant member (110) is disposed between the bottom of the battery box (100) and the liquid-cooled plate (200), and wherein the cells are disposed on the liquid-cooled plate (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166297.XA CN115340704A (en) | 2022-09-23 | 2022-09-23 | Manufacturing method of impact-resistant material, impact-resistant piece, battery box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166297.XA CN115340704A (en) | 2022-09-23 | 2022-09-23 | Manufacturing method of impact-resistant material, impact-resistant piece, battery box and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115340704A true CN115340704A (en) | 2022-11-15 |
Family
ID=83955289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211166297.XA Pending CN115340704A (en) | 2022-09-23 | 2022-09-23 | Manufacturing method of impact-resistant material, impact-resistant piece, battery box and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115340704A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083356A (en) * | 1994-06-20 | 1996-01-09 | Toshiba Silicone Co Ltd | Manufacture of electrically conductive silicone rubber sponge |
| US20150126631A1 (en) * | 2013-11-01 | 2015-05-07 | New Aegis Corporation | Shock absorption material |
| CN110010818A (en) * | 2019-04-28 | 2019-07-12 | 深圳市富程威科技有限公司 | A kind of liquid cooling plate support buffer structure and battery pack |
| CN110684229A (en) * | 2019-11-19 | 2020-01-14 | 浙江远景体育用品有限公司 | Foaming composite material for bicycle safety helmet and preparation method thereof |
| CN210248476U (en) * | 2019-05-14 | 2020-04-07 | 深圳安迪上科新材料科技有限公司 | Anti-impact protective equipment |
-
2022
- 2022-09-23 CN CN202211166297.XA patent/CN115340704A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083356A (en) * | 1994-06-20 | 1996-01-09 | Toshiba Silicone Co Ltd | Manufacture of electrically conductive silicone rubber sponge |
| US20150126631A1 (en) * | 2013-11-01 | 2015-05-07 | New Aegis Corporation | Shock absorption material |
| CN110010818A (en) * | 2019-04-28 | 2019-07-12 | 深圳市富程威科技有限公司 | A kind of liquid cooling plate support buffer structure and battery pack |
| CN210248476U (en) * | 2019-05-14 | 2020-04-07 | 深圳安迪上科新材料科技有限公司 | Anti-impact protective equipment |
| CN110684229A (en) * | 2019-11-19 | 2020-01-14 | 浙江远景体育用品有限公司 | Foaming composite material for bicycle safety helmet and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100284884B1 (en) | Composite Laminate Beams Used in Automobile Body Construction | |
| JP6332559B2 (en) | In-vehicle display device | |
| ES2392929T3 (en) | Structural epoxy-based foam with thermoplastic polyurethanes | |
| TW202003399A (en) | On-board display apparatus | |
| RU2561153C1 (en) | Protective panel to be secured at vehicle body part and method of its fabrication | |
| CN204775489U (en) | A damping and sclerosis subassembly, automobile body part and door for automobile body panel | |
| CN107310086B (en) | Forming method, molding die and the Foamex formed body of Foamex formed body | |
| DE112018002116T5 (en) | Cover member and display device | |
| CN115340704A (en) | Manufacturing method of impact-resistant material, impact-resistant piece, battery box and battery pack | |
| CN106633635B (en) | The method of composition, foam and cavity structure enhancing | |
| CN113551559A (en) | Multi-cell soft material filled with shear thickening fluid, laminated protective structure and preparation method | |
| KR20200042014A (en) | Epoxy resin composition for fiber reinforced composite materials, prepreg and fiber reinforced composite materials | |
| JPS59199228A (en) | Production of operating window for automobile | |
| KR100631336B1 (en) | The method of void free for molding product | |
| US20210111387A1 (en) | Customizable support pad for reducing vibration and gravitational shock acting on a battery | |
| US20100122791A1 (en) | Binder degradation of sand cores | |
| JP3374944B2 (en) | Forming method for outer case of mobile phone | |
| JPH11275687A (en) | Loudspeaker diaphragm using injected foam-molding substance | |
| DE4411161A1 (en) | Polyurethane moulding composition | |
| CN104455151B (en) | A kind of multifunction structure with absorbing and cooling temperature and damping effect | |
| KR101190634B1 (en) | Color changeable earplug according to body temperature and method for manufacturing the same | |
| JPH05235822A (en) | Portable telephone set | |
| CN110747046A (en) | Environment-friendly release agent and preparation method thereof | |
| CA2355642C (en) | Method and apparatus for blow molding large reinforced plastic parts | |
| JPH1134081A (en) | Molding method of resin material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221115 |