CN116345022A - Preparation method of heat insulation pad between battery cells and heat insulation pad - Google Patents
Preparation method of heat insulation pad between battery cells and heat insulation pad Download PDFInfo
- Publication number
- CN116345022A CN116345022A CN202310544136.8A CN202310544136A CN116345022A CN 116345022 A CN116345022 A CN 116345022A CN 202310544136 A CN202310544136 A CN 202310544136A CN 116345022 A CN116345022 A CN 116345022A
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- Prior art keywords
- silica gel
- cutting
- pet film
- finished product
- preparing
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- 238000009413 insulation Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000000741 silica gel Substances 0.000 claims abstract description 65
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 65
- 238000005520 cutting process Methods 0.000 claims abstract description 41
- 229920002799 BoPET Polymers 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000004964 aerogel Substances 0.000 claims abstract description 12
- 239000002390 adhesive tape Substances 0.000 claims abstract description 7
- 238000009966 trimming Methods 0.000 claims abstract description 7
- 239000011247 coating layer Substances 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
- 239000003063 flame retardant Substances 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000013138 pruning Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
Abstract
The embodiment of the invention discloses a preparation method of a cell interval heat pad and a heat insulation pad, wherein the preparation method comprises the following steps: cutting aerogel, cutting PET film, banburying silica gel, cutting silica gel, molding silica gel, cutting an inner frame, assembling, pressing, trimming and pasting double-sided adhesive tape. According to the invention, during the assembling step, the treated PET film is attached to the inner frame surface of the silica gel finished product, so that the assembled finished product is obtained, and the coating layer is attached to the PET film surface by adopting the coating machine, so that the adhesive treatment agent is not required to be smeared on the PET film surface during the assembling, the preparation process is further reduced, the complexity of the process is reduced, and the problem that the adhesive is unstable due to uneven smearing of the adhesive treatment agent is avoided.
Description
Technical Field
The invention relates to a heat insulation pad, in particular to a preparation method of a heat insulation pad between electric cores and the heat insulation pad.
Background
In the prior art, in order to keep good adhesive between the PET film and the silica gel in the preparation method process of the heat insulation pad between the battery cells, an adhesive treatment agent needs to be smeared on the surface of the silica gel in the assembly process, so that the process is more complicated, and if the adhesive treatment agent is smeared unevenly, the adhesive is unstable easily.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of an inter-cell heat insulation pad and the heat insulation pad.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect, the invention provides a method for preparing a cell spacer thermal pad, comprising the following steps:
s1, cutting aerogel: cutting into required sizes by using a cutting die;
s2, cutting a PET film: cutting into required sizes by using a cutting die;
s3, banburying silica gel: mixing and preparing a silica gel raw material, a flame retardant and a vulcanizing agent according to a specified proportion, time and temperature by adopting an internal mixer to obtain a silica gel coil stock, and cooling by using a water cooling machine;
s4, cutting the silica gel: dividing the cooled silica gel coil into silica gel strips with specified weight by adopting a dividing and cutting machine;
s5, molding silica gel: putting the slit silica gel strips into a forming die and sending the formed silica gel strips into a hot press for treatment to obtain a silica gel finished product;
s6, cutting an inner frame: cutting the finished silica gel product at the position of the cutting die in a punch to cut the inner frame of the finished silica gel product completely, so as to be used for placing aerogel;
s7, assembling: placing aerogel in an inner frame of a silica gel finished product, and attaching the treated PET film to the inner frame surface of the silica gel finished product to obtain an assembled finished product;
s8, laminating: pressing and assembling a finished product by adopting a hot pressing mode;
s9, pruning; trimming and cutting the pressed assembled product to remove the shape waste;
s10, sticking double-sided adhesive tape; adhering double-sided adhesive tapes to the front and back surfaces of the trimmed and cut assembled finished product to obtain a heat insulation pad finished product;
in the step S7, the PET film is treated by a coater to attach a coating layer on the surface of the PET film.
The further technical scheme is as follows: in the step S3, the hardness of the raw silica gel is HA40±10.
The further technical scheme is as follows: in the step S3, the proportion of the flame retardant is 50%.
The further technical scheme is as follows: in the step S3, the vulcanizing agent is a bis-dipentaerythritol vulcanizing agent.
The further technical scheme is as follows: in the step S3, the vulcanizing agent accounts for 3%.
The further technical scheme is as follows: in the step S3, the banburying temperature is 40-45 ℃.
The further technical scheme is as follows: in the step S3, the banburying time is 120-130S.
The further technical scheme is as follows: when the PET film is processed by a coater, the required temperature is regulated to 90 ℃ and the pressure is 50kg/cm 2 And the vacuum time was 10s.
In a second aspect, the invention also provides a heat insulation pad obtained by the preparation method.
Compared with the prior art, the invention has the beneficial effects that: through when the equipment step, laminating on the inside casing surface subsides of silica gel finished product to the PET membrane after handling to obtain the equipment finished product, the PET membrane adopts the coating machine to handle, in order to adhere to a coating layer on PET membrane surface, thereby make need not to paint viscose treatment agent on PET membrane surface when the equipment, and then reduced preparation process, reduced the complexity of technology moreover, and avoided viscose treatment agent to paint inhomogeneous easily to lead to the unstable problem of viscose.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the present invention so that the same may be more clearly understood, as well as to provide a better understanding of the present invention with reference to the following detailed description of the preferred embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for manufacturing a thermal pad between electrical cores according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As shown in fig. 1, the embodiment of the invention provides a preparation method of an inter-cell heat insulation pad, wherein the inter-cell heat insulation pad is used for insulating different cells and providing heat insulation protection and mechanical support. The preparation method comprises the following steps: S1-S10.
S1, cutting aerogel: cutting into desired size using a cutting die.
The cut aerogel was ready for use, in this example, the desired size was 192.5 x 95.5 x 3.0mm.
S2, cutting a PET film: cutting into desired size using a cutting die.
The cut PET film was ready for use, in this example the required size was 280 x 410mm.
S3, banburying silica gel: mixing and preparing the silica gel raw material, the flame retardant and the vulcanizing agent according to a specified proportion, time and temperature by adopting an internal mixer to obtain a silica gel coil stock, and cooling by using a water cooling machine.
The hardness, flame retardant grade and structural strength of the product are affected by the silica gel raw materials, the flame retardant and the vulcanizing agent according to the specified mixing proportion, the raw materials can be uniformly mixed by proper banburying time, the silica gel can be aged due to overhigh temperature and overlong time, and the quality and subsequent production of the product are affected. Preferably, the hardness of the raw silica gel is HA 40.+ -.10. The flame retardant was 50%. The vulcanizing agent is a bidipentaerythritol vulcanizing agent, and the ratio of the vulcanizing agent is 3%. The banburying temperature is 40-45 ℃. The banburying time is 120-130s.
S4, cutting the silica gel: and dividing the cooled silica gel coil into silica gel strips with specified weight by adopting a dividing and cutting machine.
Cut into strips of silica gel to facilitate weighing production. The weight of the silica gel strip is set according to the actual requirement, and the silica gel strip with the corresponding weight is cut out.
S5, molding silica gel: and (3) putting the cut silica gel strips into a forming die and sending the formed silica gel strips into a hot press for treatment to obtain a silica gel finished product.
Because the weight error can be necessarily caused by certain silica gel strips due to the error of the cut silica gel strips, the silica gel strips meeting the weight requirement can be selected in a weighing mode for solving the problem, and the silica gel strips are placed into a forming die and sent into a hot press for processing, so that a silica gel finished product is obtained.
In this example, the size of the desired silica gel finished product was 350×223×5.3mm.
S6, cutting an inner frame: and (3) putting the finished silica gel product at the position of the good cutting die, and feeding the finished silica gel product into a punching machine for cutting so as to punch the inner frame of the finished silica gel product completely for placing aerogel.
In this example, the size of the cut inner frame was 193×96×5.3mm.
S7, assembling: and placing the aerogel in an inner frame of the silica gel finished product, and attaching the treated PET film to the surface of the inner frame of the silica gel finished product to obtain an assembled finished product.
The PET film is treated by a coater to attach a coating layer to the surface of the PET film. In this example, when the PET film was processed by a coater, the required temperature was adjusted to 90℃and the pressure was 50kg/cm 2 And the vacuum time was 10s.
The PET film is processed by the coating machine, so that a coating layer is attached to the surface of the PET film, and the adhesive treatment agent is not required to be smeared on the surface of the PET film during assembly, so that the preparation process is reduced, the complexity of the process is reduced, and the problem that the adhesive is unstable due to uneven smearing of the adhesive treatment agent is avoided.
S8, laminating: and pressing and assembling the finished product by adopting a hot pressing mode.
The aim of this step is to vacuum the product and to thermally press the product.
S9, pruning; trimming and cutting the pressed assembled product to remove the shape waste.
The trimming is mainly aimed at removing form scraps, and in this embodiment, the final dimensions after trimming are: aerogel size 211 x 110 x 3.0mm; silica gel size 211 x 110 x 5.3mm.
S10, sticking double-sided adhesive tape; and (3) adhering double-sided adhesive tapes to the front and back surfaces of the assembled product after trimming and cutting to obtain the heat insulation pad product.
The manufactured heat insulation pad finished product can be used for being adhered between the battery modules of the new energy automobile, and has the functions of fire prevention, heat insulation and the like.
The embodiment of the invention also provides a heat insulation pad, which is obtained by adopting the preparation method.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (9)
1. The preparation method of the cell interval heat pad is characterized by comprising the following steps of:
s1, cutting aerogel: cutting into required sizes by using a cutting die;
s2, cutting a PET film: cutting into required sizes by using a cutting die;
s3, banburying silica gel: mixing and preparing a silica gel raw material, a flame retardant and a vulcanizing agent according to a specified proportion, time and temperature by adopting an internal mixer to obtain a silica gel coil stock, and cooling by using a water cooling machine;
s4, cutting the silica gel: dividing the cooled silica gel coil into silica gel strips with specified weight by adopting a dividing and cutting machine;
s5, molding silica gel: putting the slit silica gel strips into a forming die and sending the formed silica gel strips into a hot press for treatment to obtain a silica gel finished product;
s6, cutting an inner frame: cutting the finished silica gel product at the position of the cutting die in a punch to cut the inner frame of the finished silica gel product completely, so as to be used for placing aerogel;
s7, assembling: placing aerogel in an inner frame of a silica gel finished product, and attaching the treated PET film to the inner frame surface of the silica gel finished product to obtain an assembled finished product;
s8, laminating: pressing and assembling a finished product by adopting a hot pressing mode;
s9, pruning; trimming and cutting the pressed assembled product to remove the shape waste;
s10, sticking double-sided adhesive tape; adhering double-sided adhesive tapes to the front and back surfaces of the trimmed and cut assembled finished product to obtain a heat insulation pad finished product;
in the step S7, the PET film is treated by a coater to attach a coating layer on the surface of the PET film.
2. The method for preparing a cell spacer heat pad according to claim 1, wherein in the step S3, the hardness of the raw silica gel is HA40±10.
3. The method for preparing a thermal spacer for a battery cell according to claim 1, wherein in the step S3, the flame retardant accounts for 50%.
4. The method for preparing a thermal spacer for a battery cell according to claim 1, wherein in the step S3, the vulcanizing agent is a bidipentaerythritol vulcanizing agent.
5. The method of claim 4, wherein in the step S3, the vulcanizing agent accounts for 3%.
6. The method for preparing a cell thermal spacer according to claim 1, wherein in the step S3, the banburying temperature is 40-45 ℃.
7. The method for preparing the cell spacer heat pad according to claim 1, wherein in the step S3, the banburying time is 120-130S.
8. The method for preparing a thermal spacer for a battery cell according to claim 1, wherein in the step S7, when the PET film is processed by a coater, the temperature is adjusted to 90 ℃ and the pressure is 50kg/cm 2 And the vacuum time was 10s.
9. A heat insulating mat obtained by the method of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310544136.8A CN116345022A (en) | 2023-05-15 | 2023-05-15 | Preparation method of heat insulation pad between battery cells and heat insulation pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310544136.8A CN116345022A (en) | 2023-05-15 | 2023-05-15 | Preparation method of heat insulation pad between battery cells and heat insulation pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116345022A true CN116345022A (en) | 2023-06-27 |
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ID=86895161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310544136.8A Pending CN116345022A (en) | 2023-05-15 | 2023-05-15 | Preparation method of heat insulation pad between battery cells and heat insulation pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116345022A (en) |
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2023
- 2023-05-15 CN CN202310544136.8A patent/CN116345022A/en active Pending
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