CN114566745A - Roll up core and battery - Google Patents

Roll up core and battery Download PDF

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Publication number
CN114566745A
CN114566745A CN202210104368.7A CN202210104368A CN114566745A CN 114566745 A CN114566745 A CN 114566745A CN 202210104368 A CN202210104368 A CN 202210104368A CN 114566745 A CN114566745 A CN 114566745A
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CN
China
Prior art keywords
winding core
core body
coating
layer
foam
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
Application number
CN202210104368.7A
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Chinese (zh)
Inventor
黄海宁
曹恋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Lanjun New Energy Technology Co Ltd
Original Assignee
Shanghai Lanjun New Energy Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Lanjun New Energy Technology Co Ltd filed Critical Shanghai Lanjun New Energy Technology Co Ltd
Priority to CN202210104368.7A priority Critical patent/CN114566745A/en
Publication of CN114566745A publication Critical patent/CN114566745A/en
Pending legal-status Critical Current

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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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/134—Hardness
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/136—Flexibility or foldability
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/673—Containers for storing liquids; Delivery conduits therefor
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/673—Containers for storing liquids; Delivery conduits therefor
    • H01M50/682—Containers for storing liquids; Delivery conduits therefor accommodated in battery or cell casings
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Cell Separators (AREA)

Abstract

The invention relates to a winding core and a battery, wherein the winding core comprises a winding core body (1) and a coating layer (2), the coating layer (2) is attached to the outer side wall of the winding core body (1) through a first bonding layer (3), the coating layer (2) comprises foam (21), a second bonding layer (22) and a film layer (23) which are sequentially connected, and the film layer (23) is in contact with the first bonding layer (3). Compared with the prior art, the invention has the advantages of strong liquid retention capability, long service life, low realization difficulty and the like.

Description

Roll up core and battery
Technical Field
The invention relates to the technical field of battery design and manufacture, in particular to a winding core and a battery.
Background
The roll core has the pole piece expansion behavior in the charging and long-term use process, and the electrolyte in the pores of the inner part of the roll core can be extruded to the outside of the roll core after expansion, so that the state of barren solution in the roll core is caused. The smoothness of ion transmission is influenced, and in severe cases, a lithium separation window of the battery can be reduced in the charging process, so that abnormal lithium separation during charging is caused, and the safety and reliability of the battery cell are influenced.
In the prior art, a solution is provided, for example, as shown in fig. 10, chinese patent CN201910539179.0 discloses a method for improving the wettability of a lithium ion battery pole piece, and a wetting film 4 is introduced between a pole piece 6 and a diaphragm 5 inside a roll core, so as to improve the roll core liquid retention capability. However, the method is difficult to realize, the infiltrated film needs to enter the roll core through a complicated winding process, the process is complicated, and the equipment transformation difficulty is high. After the electric core is used for a long time, certain expansion force exists in the battery, so that after the internal infiltration film is extruded, the electrolyte is dissociated outside for a long time due to the fact that partial residual space exists outside the winding core, and the liquid retention effect cannot be basically improved. The long-term liquid retention capacity and the performance improvement are very limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the winding core and the battery, which have the advantages of strong liquid retention capacity, long service life and low implementation difficulty.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a roll up core, includes roll up core body and coating, the coating through first adhesive linkage attachs in roll up core body lateral wall, the coating including the bubble cotton, second adhesive linkage and the thin layer that connect gradually, the thin layer contact with first adhesive linkage.
Further, the film layer is a plastic film.
Further, the plastic film is an OPS heat-shrinkable film or a PET film.
Further, the foam is microporous polyurethane foam, polyethylene foam, EVA foam or ethylene propylene diene monomer foam.
Further, the first adhesive layer is a double-sided adhesive tape.
Further, the material of the second adhesive layer is polyacrylic acid or polytetrafluoroethylene.
Furthermore, the coating layer is distributed on the large surface of the outer side wall of the winding core body.
Furthermore, the coating layer is distributed on the side surface of the outer side wall of the winding core body.
Further, the coating layer wraps the outer side wall of the winding core body.
A battery comprises the winding core.
Compared with the prior art, the invention has the following beneficial effects:
(1) the coating layer can reduce the inconsistency of electrolyte in the winding core body caused by the breathing effect of expansion/contraction in the charging and discharging processes of the winding core body, and can extrude partial electrolyte to infiltrate into the winding core body after the winding core body extrudes the coating layer in the charging and expanding process of the winding core body, so that the content of the electrolyte in the winding core body is improved, the ion transmission capacity is improved, the possibility of lithium precipitation of a battery is reduced, and the service life is prolonged;
(2) the liquid retention capacity of the winding core in the long-term use process can be improved, the coating layer can store most of free electrolyte when the thickness and the expansion force of the winding core body are lower in the initial use stage of the battery, and part of the electrolyte in the coating layer can be extruded into the winding core body after a certain thickness and expansion increase exist in the winding core body in the later use stage of the battery, so that the long-term liquid retention capacity of the winding core is improved, and especially after long-time circulation and storage, the free electrolyte is ensured to exist in the winding core instead of the residual space in the battery case after part of the electrolyte is consumed;
(3) The coating layer can replace the function of a battery core insulation sheet, and the possibility of short circuit of the winding core and the shell is reduced;
(4) the film layer is the plastic film, the plastic film is the OPS heat-shrinkable film or the PET film, the strength is high, the rigidity of the coating layer is improved, the coating layer is not easy to damage, and meanwhile, the foam has certain elasticity, so that the coating layer can absorb the effect of partial expansion force of the winding core, the expansion force is remained in the winding core body, the size change of the module is reduced in the charging and discharging process due to the change of the expansion force caused by the expansion/contraction of the winding core body, the expansion force of the winding core can be bound in the winding core body, the overall deformation of the module or the system is reduced, and the reliability of the structural strength of the module or the system is improved.
(5) The coating layer is convenient to process, low in implementation difficulty and capable of greatly reducing the processing cost.
Drawings
FIG. 1 is a schematic view of the connection of a cladding layer to a core body;
FIG. 2 is a profile view of a winding core body;
FIG. 3 is a schematic view of the structure of a core in example 2;
FIG. 4 is a schematic view of the structure of a core in example 3;
FIG. 5 is a schematic view of the structure of a core in example 4;
FIG. 6 is a profile view of a laminated core body;
FIG. 7 is a schematic view showing the structure of a core in example 5;
FIG. 8 is a schematic view showing the structure of a core in example 6;
FIG. 9 is a schematic view showing the structure of a core in example 7;
FIG. 10 is a schematic view of a conventional winding core structure;
the reference numbers in the figures illustrate:
1. the winding core comprises a winding core body, 2 parts of a coating layer, 3 parts of a first bonding layer, 4 parts of a wetting film, 5 parts of a diaphragm, 6 parts of a pole piece, 21 parts of foam, 22 parts of a second bonding layer and 23 parts of a film layer.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The utility model provides a roll up core, as figure 1, includes roll core body 1 and coating 2, and coating 2 attaches in roll core body 1 lateral wall through first adhesive linkage 3, and coating 2 is including the cotton 21 of bubble, second adhesive linkage 22 and the thin layer 23 that connect gradually, and thin layer 23 and the contact of first adhesive linkage 3.
The foam 21 is microporous polyurethane foam, polyethylene foam, EVA foam or ethylene propylene diene monomer foam, and the foam 21 is a high liquid retention material and has high porosity.
The porosity of the coating layer 2 is between 10 and 90 percent, preferably between 30 and 90 percent, and the elastic modulus of the coating layer 2 is lower than that of the winding core.
The first adhesive layer 3 is a double-sided adhesive tape, and the second adhesive layer 22 is made of polyacrylic acid or polytetrafluoroethylene.
The coating layer 2 can reduce the inconsistency of electrolyte inside the winding core body 1 caused by the breathing effect of expansion/contraction in the charging and discharging processes of the winding core body 1, and part of electrolyte can be extruded out after the winding core body 1 extrudes the coating layer 2 in the charging and expanding process of the winding core body 1 to soak the inside of the winding core body 1, so that the content of the electrolyte inside the winding core body 1 is improved, the ion transmission capability is further improved, and the possibility of lithium separation of the battery is reduced;
in the initial stage of battery use, when the thickness and the expansive force of the winding core body 1 are low, the coating layer 2 can store most of free electrolyte, and in the later stage of battery use, after a certain thickness and expansion increase exist in the winding core body 1, part of electrolyte in the coating layer 2 can be extruded into the winding core body 1, so that the long-term liquid retention capacity of the winding core is improved, and especially after long-time circulation and storage, after part of electrolyte is consumed, the free electrolyte is ensured to exist in the winding core instead of the residual space in the battery case;
the coating layer 2 can replace the function of an electric core insulation sheet, and the possibility of short circuit of the winding core and the shell is reduced;
Thin layer 23 is the plastic film, the plastic film is OPS heat shrink film or PET film, high strength, the rigidity is high, the rigidity of coating 2 has been improved, it is not fragile, bubble cotton 21 has certain elasticity simultaneously, consequently, coating 2 can absorb the effect of partial core bulging force of rolling up, stay core body 1 inside with the bulging force, the reduction is at the charge-discharge in-process, because the change of the bulging force that core body 1 inflation/shrink brought leads to the change of module size, can tie core bulging force at core body 1 inside, reduce module or the whole deformation of system, promote the structural strength reliability of module or system.
Example 2
In this embodiment, as shown in fig. 2 and 3, the winding core body 1 is of a winding type, and the coating layer 2 is distributed on a large surface of the outer side wall of the winding core body 1. The rest is the same as in example 1.
Example 3
In this embodiment, as shown in fig. 2 and 4, the winding core body 1 is of a winding type, and the coating layer 2 is distributed on the side surface of the outer side wall of the winding core body 1. The rest is the same as in example 1.
Example 4
In this embodiment, as shown in fig. 2 and 5, the winding core body 1 is of a winding type, and the outer side wall of the winding core body 1 is wrapped by the wrapping layer 2. The rest is the same as in example 1.
Example 5
In this embodiment, as shown in fig. 6 and 7, the winding core body 1 is of a laminated type, and the coating layer 2 is distributed on the large surface of the outer side wall of the winding core body 1. The rest is the same as in example 1.
Example 6
In this embodiment, as shown in fig. 6 and 8, the winding core body 1 is of a laminated type, and the coating layer 2 is distributed on the side surface of the outer side wall of the winding core body 1. The rest is the same as in example 1.
Example 7
In this embodiment, as shown in fig. 6 and 9, the winding core body 1 is of a laminated type, and the outer side wall of the winding core body 1 is wrapped by the wrapping layer 2. The rest is the same as in example 1.
Example 8
A battery comprising the winding core of embodiment 1.
Embodiments 1, 2, 3, 4, 5, 6, and 7 provide a winding core and a battery, which improve the liquid retention capability of the winding core in the long-term use process, and the coating layer 2 can replace the function of the cell insulation sheet, reduce the possibility of short circuit between the winding core and the shell, reduce the expansion force of the battery, and reduce the deformation of the winding core.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The utility model provides a roll up core, its characterized in that includes roll core body (1) and coating (2), coating (2) through first adhesive linkage (3) attached in roll core body (1) lateral wall, coating (2) including the bubble cotton (21), second adhesive linkage (22) and thin film layer (23) that connect gradually, thin film layer (23) and first adhesive linkage (3) contact.
2. Winding core according to claim 1, characterized in that the film layer (23) is a plastic film.
3. A winding core according to claim 2, characterized in that the plastic film is an OPS heat shrink film or a PET film.
4. Winding core according to claim 1, characterized in that the foam (21) is a microcellular polyurethane foam, a polyethylene foam, an EVA foam or an ethylene propylene diene monomer foam.
5. Winding core according to claim 1, characterised in that the first adhesive layer (3) is a double-sided tape.
6. Winding core according to claim 1, characterized in that the material of the second adhesive layer (22) is polyacrylic acid or polytetrafluoroethylene.
7. Winding core according to claim 1, characterized in that the coating (2) is distributed over the major surface of the outer side wall of the core body (1).
8. Winding core according to claim 1, characterized in that the coating layer (2) is distributed on the side of the outer side wall of the core body (1).
9. Winding core according to claim 1, characterized in that the coating (2) covers the outer side wall of the winding core body (1).
10. A battery comprising a jellyroll according to any one of claims 1 to 9.
CN202210104368.7A 2022-01-28 2022-01-28 Roll up core and battery Pending CN114566745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210104368.7A CN114566745A (en) 2022-01-28 2022-01-28 Roll up core and battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210104368.7A CN114566745A (en) 2022-01-28 2022-01-28 Roll up core and battery

Publications (1)

Publication Number Publication Date
CN114566745A true CN114566745A (en) 2022-05-31

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CN202210104368.7A Pending CN114566745A (en) 2022-01-28 2022-01-28 Roll up core and battery

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116565334A (en) * 2023-06-07 2023-08-08 宁夏宝丰昱能科技有限公司 Multilayer composite liquid absorption material and preparation method and application thereof

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CN202905821U (en) * 2012-10-30 2013-04-24 风帆股份有限公司 Assembly structure of lithium ion battery
JP2014151985A (en) * 2013-02-05 2014-08-25 Dainippon Printing Co Ltd Winding core and winding body
CN206076409U (en) * 2016-09-26 2017-04-05 东莞市卓越新材料科技有限公司 The good lithium-ion electric core of shockproof effect
CN208674280U (en) * 2018-12-14 2019-03-29 广东天劲新能源科技股份有限公司 A kind of lithium battery of long circulation life
CN109554136A (en) * 2018-09-28 2019-04-02 桑顿新能源科技有限公司 A kind of lithium ion battery special adhesive tape and its application
CN209159090U (en) * 2018-12-14 2019-07-26 东莞市柏林电子有限公司 A kind of good airproof performance and novel foam structure that can be dust-proof
CN209912973U (en) * 2018-11-08 2020-01-07 曙鹏科技（深圳）有限公司 Soft package lithium ion battery
CN210365110U (en) * 2019-06-21 2020-04-21 东莞市泰亚电子科技有限公司 Cotton packaging structure of buffering bubble
CN111995957A (en) * 2020-08-18 2020-11-27 澳中新材料科技(韶关)有限公司 Oriented polystyrene expansion adhesive tape with high expansion ratio and preparation method thereof
CN112126367A (en) * 2020-10-14 2020-12-25 衡山县佳诚新材料有限公司 Foam adhesive tape
CN112622375A (en) * 2020-11-12 2021-04-09 苏州赛伍应用技术股份有限公司 Multilayer structure base material, foam adhesive tape using base material and preparation method of foam adhesive tape
CN112803081A (en) * 2021-04-14 2021-05-14 江苏时代新能源科技有限公司 Battery monomer, preparation method thereof, battery and power utilization device
CN214411327U (en) * 2021-04-01 2021-10-15 合肥国轩高科动力能源有限公司 Square aluminum shell lithium battery insulating film
CN215560039U (en) * 2021-09-08 2022-01-18 南京占一科技有限公司 Blue film adhesive tape for square lithium battery cell

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202905821U (en) * 2012-10-30 2013-04-24 风帆股份有限公司 Assembly structure of lithium ion battery
JP2014151985A (en) * 2013-02-05 2014-08-25 Dainippon Printing Co Ltd Winding core and winding body
CN206076409U (en) * 2016-09-26 2017-04-05 东莞市卓越新材料科技有限公司 The good lithium-ion electric core of shockproof effect
CN109554136A (en) * 2018-09-28 2019-04-02 桑顿新能源科技有限公司 A kind of lithium ion battery special adhesive tape and its application
CN209912973U (en) * 2018-11-08 2020-01-07 曙鹏科技（深圳）有限公司 Soft package lithium ion battery
CN208674280U (en) * 2018-12-14 2019-03-29 广东天劲新能源科技股份有限公司 A kind of lithium battery of long circulation life
CN209159090U (en) * 2018-12-14 2019-07-26 东莞市柏林电子有限公司 A kind of good airproof performance and novel foam structure that can be dust-proof
CN210365110U (en) * 2019-06-21 2020-04-21 东莞市泰亚电子科技有限公司 Cotton packaging structure of buffering bubble
CN111995957A (en) * 2020-08-18 2020-11-27 澳中新材料科技(韶关)有限公司 Oriented polystyrene expansion adhesive tape with high expansion ratio and preparation method thereof
CN112126367A (en) * 2020-10-14 2020-12-25 衡山县佳诚新材料有限公司 Foam adhesive tape
CN112622375A (en) * 2020-11-12 2021-04-09 苏州赛伍应用技术股份有限公司 Multilayer structure base material, foam adhesive tape using base material and preparation method of foam adhesive tape
CN214411327U (en) * 2021-04-01 2021-10-15 合肥国轩高科动力能源有限公司 Square aluminum shell lithium battery insulating film
CN112803081A (en) * 2021-04-14 2021-05-14 江苏时代新能源科技有限公司 Battery monomer, preparation method thereof, battery and power utilization device
CN215560039U (en) * 2021-09-08 2022-01-18 南京占一科技有限公司 Blue film adhesive tape for square lithium battery cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116565334A (en) * 2023-06-07 2023-08-08 宁夏宝丰昱能科技有限公司 Multilayer composite liquid absorption material and preparation method and application thereof

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