WO2013031888A1 - Battery information management device and battery - Google Patents

Battery information management device and battery Download PDF

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Publication number
WO2013031888A1
WO2013031888A1 PCT/JP2012/071999 JP2012071999W WO2013031888A1 WO 2013031888 A1 WO2013031888 A1 WO 2013031888A1 JP 2012071999 W JP2012071999 W JP 2012071999W WO 2013031888 A1 WO2013031888 A1 WO 2013031888A1
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WO
WIPO (PCT)
Prior art keywords
battery
information management
film
management device
battery information
Prior art date
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PCT/JP2012/071999
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French (fr)
Japanese (ja)
Inventor
孝夫 大道寺
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Ｎｅｃエナジーデバイス株式会社
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Publication of WO2013031888A1 publication Critical patent/WO2013031888A1/en

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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
    • 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
    • H01M50/121—Organic material
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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
    • 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
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/581—Devices or arrangements for the interruption of current in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/103—Fuse
    • 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

Definitions

  • the present invention relates to a battery information management device for improving the traceability of a battery in which a battery element in which a positive electrode and a negative electrode are laminated via a separator is sealed, and a battery using the same.
  • a laminated secondary battery such as a lithium ion battery in which a positive electrode and a negative electrode are laminated via a separator and sealed with a film sheathing material is used to increase the area of the positive electrode and the negative electrode, or to increase the number of positive and negative electrodes to be laminated.
  • By increasing the capacity it is easy to increase the capacity per unit battery, which is suitable as a battery having a large charge / discharge capacity.
  • the battery element is housed in the battery element housing part provided in the film-shaped packaging material 3, and the periphery of the film-shaped packaging material is surrounded. Sealing is performed by the heat-sealing part 5, and the positive electrode tab 7 and the negative electrode tab 9 are taken out from the heat-sealing part 5.
  • the manufactured film-clad battery is subjected to various tests including a charge / discharge test, and the battery information management device 11 in which identification information such as the type of battery, the manufacturing lot number, the manufacturing date and time, and the manufacturing process history is recorded. Quality control was performed on the surface of the film exterior material 3.
  • the battery information management device 11 directly prints numbers, symbols, or barcodes on the surface of the film-shaped exterior material 3 by an ink jet method or a thermal transfer method, or attaches an identification member on which identification information is printed on the surface. Has been done. However, in these methods, the identification member peels off during use, the printed identification information disappears due to contact with other members, or disappears due to a chemical such as an electrolyte, and identification is impossible. was there.
  • a method of forming an identification symbol using a material of the same quality as the active material coating material has been proposed in the vicinity of the terminal mounting portion of the battery electrode (see, for example, Patent Document 1). ). However, since the vicinity of the terminal attachment portion of the battery electrode is located inside the outer packaging material of the film-clad battery, it was impossible to confirm the identification information before disassembling the film-clad battery.
  • the present invention provides a highly reliable battery information management device with excellent traceability and a battery equipped with the battery information management device so that identification information provided on the surface of the battery is not lost even when the battery is used for a long period of time. It is a problem to provide.
  • This invention solves the said subject, Comprising: It is a battery information management apparatus provided with the information recording part which recorded the three-dimensional information.
  • the three-dimensional information is formed in at least one of a three-dimensional shape having a convex portion, a concave portion, a notch, a hole, and an inclined surface.
  • a battery element in which a positive electrode and a negative electrode are stacked with a separator interposed therebetween, and a film-like exterior material that sheathes the battery element are provided, and three-dimensional information is recorded on a heat-sealed portion of the film-like exterior material
  • It is a battery in which a battery information management device is provided integrally.
  • the battery information management device includes a battery information management device in which identification information is recorded on a member formed directly on the heat-sealed portion of the film-shaped exterior material or a member different from the film-shaped exterior material.
  • the battery is integrally joined to the battery.
  • the battery is a lithium ion secondary battery.
  • the battery information management device that integrally records three-dimensional information is provided in the heat-sealed portion, the recorded information is read without being affected by external factors such as solvent and heat. Thereby, management of batteries, such as a film-clad battery, becomes possible.
  • the heat-sealed part is located on the outer periphery of the film-like battery, even when a plurality of film-covered batteries are stacked, the identification information can be read from the lateral direction. The presence / absence and manufacturing history can be easily confirmed.
  • FIG. 1 is a diagram showing a front view of a film-clad battery of the present invention.
  • FIG. 2 is a diagram for explaining one embodiment of a battery information management device for a film-clad battery according to the present invention.
  • FIG. 2A is an enlarged front view showing the periphery of the battery information management device.
  • FIG. 2B is a side view from the direction A in FIG. 2A and is an enlarged view of only the periphery of the battery information management device.
  • FIG. 3 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery of the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner.
  • FIG. 1 is a diagram showing a front view of a film-clad battery of the present invention.
  • FIG. 2 is a diagram for explaining one embodiment of a battery information management device for a film-clad battery according to the present invention.
  • FIG. 2A is an enlarged front view showing
  • FIG. 3A is a diagram illustrating a battery information management device provided with a triangular cutout.
  • FIG. 3B is a diagram illustrating a battery information management device provided with a semicircular cutout.
  • FIG. 3C is a diagram illustrating a battery information management device provided with a rectangular cutout.
  • FIG. 4 is a diagram illustrating another embodiment of the battery information management device for a film-clad battery according to the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner.
  • FIG. 4A is a diagram illustrating a battery information management device provided with a through-hole having a circular cross section.
  • FIG. 4B is a diagram for explaining a battery information management device provided with a through-hole having a triangular cross section.
  • FIG. 4C shows a battery information management device provided with a through-hole having a circular cross-section, a through-hole having a triangular cross-section, a through-hole having a rectangular cross-section, a pentagonal through-hole, and a rhombo-shaped through-hole.
  • FIG. 5 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery according to the present invention.
  • FIG. 5A is an enlarged front view showing the periphery of the battery information management device.
  • FIG. 5B is a side view from the direction A in FIG. 5A.
  • FIG. 6 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery according to the present invention.
  • FIG. 7 is a diagram showing an example of a conventional film-clad battery.
  • FIG. 1 is a front view of the film-clad battery of the present invention.
  • the film-clad battery 1 has a battery element in which a positive electrode and a negative electrode are stacked with a separator interposed therebetween, an easy-bonding film on one surface of an aluminum foil, and a strength such as a polyethylene terephthalate film or a polyamide film on the other surface. Covered with a film-like exterior material 3 on which a large film is laminated, and heat-sealed on the inner surface of the easily-bondable film surface to form a heat-sealed part 5 and seal it.
  • the negative electrode tab 9 is taken out.
  • a battery information management device 11 in which three-dimensional identification information is recorded is formed integrally with the film-shaped exterior material in the heat-sealing portion 5 of the film-cased battery 1 of the present invention.
  • identification information necessary for battery management such as battery type, production lot number, production date and time, and production process history is recorded in a three-dimensional manner.
  • the battery information management apparatus 11 can press the member which recorded the three-dimensional information against the heat sealing
  • a member in which three-dimensional information is recorded as a separate body from the film-shaped exterior material can be thermally joined and integrated with the heat-sealed portion of the film-shaped exterior material.
  • the battery information management device 11 is formed only at one place is shown, but it can be provided at a plurality of places instead of only one place.
  • the three-dimensional information of the battery information management device 11 can be produced by a three-dimensional shape having a convex part, a concave part, a notch, a hole, or an inclined surface in the identification part.
  • a three-dimensional shape having a convex part, a concave part, a notch, a hole, or an inclined surface in the identification part.
  • information that can be visually confirmed or information that uses optical reading means can be used.
  • FIG. 2 is a diagram for explaining one embodiment of a battery information management device for a film-clad battery according to the present invention.
  • FIG. 2A is an enlarged front view showing the periphery of the battery information management device.
  • FIG. 2B is a side view from the direction A in FIG. 2A and is an enlarged view of only the periphery of the battery information management device.
  • the battery information management device 11 formed in the fusion part 5 in the vicinity of the negative electrode tab 9 includes a plurality of convex parts 12 projecting to the front side in FIG. 2A and a concave part 13 projecting to the opposite side and recessed when viewed from the front side. A large amount of information can be expressed by the combination of the positions of the convex portion 12 and the concave portion 13.
  • the convex portion 12 and the concave portion 13 of the battery information management device 11 can be easily confirmed from the side surface. Therefore, in the film-clad battery 1 of the present invention, it is possible to identify individual film-clad batteries constituting a laminate produced by laminating a plurality by the battery information management device 11 from the side of the laminate.
  • FIG. 3 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery of the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner.
  • the battery information management device 11 shown in FIG. 3A is configured by a triangular cutout portion 14. Information can be identified by the number, size, location, etc. of the triangular cutouts. Further, the battery information management device 11 shown in FIG. 3B includes a curved cutout portion 15 including an arc. Information can be identified by the number, size, position, etc. of the curved notch.
  • the battery information management device 11 shown in FIG. 3C is configured by a rectangular cutout portion 16. Information can be identified by the number, size, location, etc. of the rectangular cutouts.
  • FIG. 4 is a diagram illustrating another embodiment of the battery information management device for a film-clad battery according to the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner.
  • the battery information management device 11 formed in the fusion part 5 in the vicinity of the negative electrode tab 9 includes a through hole 17 having a circular cross section. Information can be identified by the number, size, position, and the like of through-holes having a circular cross section.
  • the battery information management apparatus 11 shown in FIG. 4B includes a through hole 18 having a triangular cross section. Information can be identified by the number and size of through-holes having a triangular cross-section, the position of each through-hole, the direction of arrangement, and the like.
  • melting part 5 vicinity of the negative electrode tab 9 shown in FIG. 4C has the through-hole 17 with a circular cross section, the through-hole 18 with a triangular cross section, and the through-hole with a rectangular cross section. 19, a through-hole 20 having a pentagonal cross-section, a through-hole 18B having a triangular cross-section different from the through-hole 18 having a triangular cross-section, and a through-hole 21 having a rhombic cross-section.
  • Information can be identified by the number, size, location, arrangement direction, and the like of through holes having these shapes.
  • the characteristics of the fused portion for tearing change as compared with a portion where the battery information management device is not provided. Therefore, by forming these battery information management devices, the fusion of the portions forming the battery information management device so that the cleavage does not occur earlier than the portion that acts as a safety valve that releases the pressure when the internal pressure increases. It is necessary to increase the width of the fusion part from the inner surface of the battery to the outer periphery of the battery as compared with other parts.
  • the battery information management device is adjusted by adjusting the width of the heat fusion portion of the portion forming the battery information management device, the notch for recording three-dimensional information, the size and shape of the through hole, and the like.
  • the battery information management device may be used as a pressure release part without providing a part that acts as a pressure release valve at another part by making the part to be cleaved at the lowest pressure.
  • FIG. 5 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery according to the present invention.
  • FIG. 5A is an enlarged front view showing the periphery of the battery information management device.
  • FIG. 5B is a side view from the direction A in FIG. 5A.
  • the film-clad battery 1 shown in FIG. 5 has the three-dimensional information recording part comprised by the inclined surface 40 in the battery information management apparatus 11.
  • the battery information management device 11 forms an inclined surface on the surface of the heat fusion part 5 by pressing the heat fusion part 5 with a member having a predetermined inclined surface 40 in the same manner as described with reference to FIGS. Alternatively, it can be produced by integrating the member on which the battery information management device 11 having a predetermined inclined surface is formed with the heat fusion part 5 by heat fusion.
  • the inclined surface 25 can read information by reading means having an image sensor or the like.
  • FIG. 6 is a view for explaining another embodiment of the film-clad battery of the present invention.
  • FIG. 6 is a side view of a battery block in which seven pieces from the film-clad battery 1-1 to the film-clad battery 1-7 are laminated and integrated.
  • a battery information management device 11 is provided in which information is provided in a three-dimensional manner in the heat-sealing part 5 on the outer peripheral part of the battery.
  • the identification information is provided three-dimensionally on the outer periphery, each battery information management of each film-covered battery 1-1 to film-covered battery 1-7 even when a large number of film-shaped battery is stacked. Since the three-dimensional information of the apparatus 11 can be easily confirmed, the confirmation work of each film-clad battery after the formation of the battery block is facilitated.
  • the battery information management device that records information in a three-dimensional manner is provided integrally with the heat fusion part, the recorded information is not affected by external factors such as solvent and heat. Can be read. As a result, more reliable management of the fill-shaped exterior battery is possible.
  • the battery information management device since the battery information management device is located in the heat-sealed portion of the outer peripheral portion of the film-shaped exterior material, the recorded information can be read from the lateral direction even when a plurality of film-cased batteries are stacked. It is easy to check the mixing of varieties and the manufacturing history.
  • a film-covered battery that is sealed with a highly reliable film-like exterior material that has excellent traceability so that identification information is not lost even during long-term use of the battery, and confirmation of the identification information is easy. be able to.
  • SYMBOLS 1 Film-clad battery, 3 ... Film-like exterior material, 5 ... Thermal fusion part, 7 ... Positive electrode tab, 9 ... Negative electrode tab, 11 ... Battery information management apparatus, 21 ... convex part, 23 ... concave part, 25 ... triangular cutout part, 27 ... semicircular cutout part, 29 ... square cutout part, 31 ... Through hole with a circular cross section, 33A, 33B ... Triangular through hole, 35 ... Rectangular through hole, 37 ... Pentagonal through hole, 39 ... Cross section Is a diamond-shaped through-hole, 40 ... inclined surface

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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)
  • Inorganic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

A film-wrapped battery having excellent traceability, the battery comprising a battery element in which a positive electrode and a negative electrode are stacked with a separator provided therebetween, and a thermally fusible film-form outer wrapping material that wraps the exterior of the battery element, wherein a three-dimensional battery information management device is provided integrally to a thermally fusible part of the film-form outer wrapping material.

Description

電池情報管理装置および電池Battery information management device and battery
　本発明は、正極電極と負極電極とをセパレータを介して積層した電池要素を封口した電池のトレーサービリティを高める電池の情報管理装置およびそれを用いた電池に関する。 The present invention relates to a battery information management device for improving the traceability of a battery in which a battery element in which a positive electrode and a negative electrode are laminated via a separator is sealed, and a battery using the same.
　正極電極と負極電極とをセパレータを介して積層してフィルム外装材で封口したリチウムイオン電池等の積層型二次電池は、正極、負極の面積を大きくしたり、積層する正極、負極の枚数を増加することによって単位電池当たりの容量を大きくすることが容易であるので、充放電容量が大きな電池として好適である。 A laminated secondary battery such as a lithium ion battery in which a positive electrode and a negative electrode are laminated via a separator and sealed with a film sheathing material is used to increase the area of the positive electrode and the negative electrode, or to increase the number of positive and negative electrodes to be laminated. By increasing the capacity, it is easy to increase the capacity per unit battery, which is suitable as a battery having a large charge / discharge capacity.
　図７に、従来のフィルム外装電池の一例を示すように、フィルム外装電池１では、フィルム状外装材３に設けた電池要素の収納部に電池要素を収納して、フィルム状外装材の周囲を熱融着部５によって封口し、正極タブ７、負極タブ９とを熱融着部５から取り出することによって製造している。
　製造したフィルム外装電池は、充放電試験をはじめとする各種の試験を行った後に、電池の種類、製造ロット番号、製造日時、および製造工程履歴等の識別情報を記録した電池情報管理装置１１をフィルム外装材３の表面に設けて品質管理を行っていた。 As shown in FIG. 7, as an example of a conventional film-clad battery, in the film-clad battery 1, the battery element is housed in the battery element housing part provided in the film-shaped packaging material 3, and the periphery of the film-shaped packaging material is surrounded. Sealing is performed by the heat-sealing part 5, and the positive electrode tab 7 and the negative electrode tab 9 are taken out from the heat-sealing part 5.
The manufactured film-clad battery is subjected to various tests including a charge / discharge test, and the battery information management device 11 in which identification information such as the type of battery, the manufacturing lot number, the manufacturing date and time, and the manufacturing process history is recorded. Quality control was performed on the surface of the film exterior material 3.
　電池情報管理装置１１は、フィルム状外装材３の表面にインクジェット式や熱転写式にて数字、記号、あるいはバーコードを直接印刷したり、あるいは識別情報を印刷した識別部材を表面に貼着することが行われている。
　ところが、これらの方法では、使用途中に識別部材が剥がれたり、印刷した識別情報が他の部材との接触によって消えたり、あるいは電解液等の薬剤によって消えて識別が不可能となる等の問題点があった。
　以上の様な問題点を解決する手段として、電池電極の端子取り付け部の付近に、活物質の塗布材料と同質の材料によって識別記号を形成する方法が提案されている（例えば、特許文献１参照）。
　しかしながら、電池電極の端子取り付け部の付近は、フィルム外装電池の外装材の内部に位置するので、フィルム外装電池の解体前には識別情報を確認することは不可能であった。 The battery information management device 11 directly prints numbers, symbols, or barcodes on the surface of the film-shaped exterior material 3 by an ink jet method or a thermal transfer method, or attaches an identification member on which identification information is printed on the surface. Has been done.
However, in these methods, the identification member peels off during use, the printed identification information disappears due to contact with other members, or disappears due to a chemical such as an electrolyte, and identification is impossible. was there.
As a means for solving the above problems, a method of forming an identification symbol using a material of the same quality as the active material coating material has been proposed in the vicinity of the terminal mounting portion of the battery electrode (see, for example, Patent Document 1). ).
However, since the vicinity of the terminal attachment portion of the battery electrode is located inside the outer packaging material of the film-clad battery, it was impossible to confirm the identification information before disassembling the film-clad battery.
特開平１０－６４５２５号公報Japanese Patent Laid-Open No. 10-64525
　本発明は、電池の長期間の使用においても電池表面に設けた識別情報が消失することがなく、トレーサービリティーが優れた信頼性の高い電池情報管理装置および前記電池情報管理装置を備えた電池を提供することを課題とするものである。 The present invention provides a highly reliable battery information management device with excellent traceability and a battery equipped with the battery information management device so that identification information provided on the surface of the battery is not lost even when the battery is used for a long period of time. It is a problem to provide.
　本発明は、上記課題を解決するものであって、三次元状の情報を記録した情報記録部を備えた電池情報管理装置である。
　前記三次元状の情報が、凸部、凹部、切り欠き、穴、傾斜面を有する立体形状の少なくともいずれか一つで形成された前記の電池情報管理装置である。
　 正極電極と負極電極とをセパレーターを介して積層した電池要素と、前記電池要素を外装するフィルム状外装材を備え、前記フィルム状外装材の熱融着部に、三次元状の情報を記録した電池情報管理装置を一体に設けた電池である。
　前記電池情報管理装置が、フィルム状外装材の熱融着部に直接形成されたもの、あるいは前記フィルム状外装材とは別の部材に識別情報を記録した電池情報管理装置を前記熱融着部に一体に接合したものである電池である。
　また、前記電池がリチウムイオン二次電池である。 This invention solves the said subject, Comprising: It is a battery information management apparatus provided with the information recording part which recorded the three-dimensional information.
In the battery information management device, the three-dimensional information is formed in at least one of a three-dimensional shape having a convex portion, a concave portion, a notch, a hole, and an inclined surface.
A battery element in which a positive electrode and a negative electrode are stacked with a separator interposed therebetween, and a film-like exterior material that sheathes the battery element are provided, and three-dimensional information is recorded on a heat-sealed portion of the film-like exterior material It is a battery in which a battery information management device is provided integrally.
The battery information management device includes a battery information management device in which identification information is recorded on a member formed directly on the heat-sealed portion of the film-shaped exterior material or a member different from the film-shaped exterior material. The battery is integrally joined to the battery.
The battery is a lithium ion secondary battery.
　本発明に係る電池によれば、熱融着部に一体に三次元状の情報を記録した電池情報管理装置を設けたので、溶剤や熱などの外的要因に影響されずに記録情報を読み取ることで、フィルム外装電池等の電池の管理が可能となる。また熱融着部は、フィルム状外装電池の外周部に位置しているので、複数のフィルム外装電池を重ねた場合でも、横方向から識別情報を読み取りが可能であるので、他品種の混入の有無の確認や、製造履歴の確認が容易に行える。 According to the battery of the present invention, since the battery information management device that integrally records three-dimensional information is provided in the heat-sealed portion, the recorded information is read without being affected by external factors such as solvent and heat. Thereby, management of batteries, such as a film-clad battery, becomes possible. In addition, since the heat-sealed part is located on the outer periphery of the film-like battery, even when a plurality of film-covered batteries are stacked, the identification information can be read from the lateral direction. The presence / absence and manufacturing history can be easily confirmed.
図１は、本発明のフィルム外装電池の正面図を示す図である。FIG. 1 is a diagram showing a front view of a film-clad battery of the present invention. 図２は、本発明のフィルム外装電池の電池情報管理装置の一実施態様を説明する図である。　図２Ａは、電池情報管理装置の周囲を拡大して示す正面図である。図２Ｂは、図２ＡにおいてＡの方向からの側面図であって、電池情報管理装置の周囲のみを拡大して表示した図である。FIG. 2 is a diagram for explaining one embodiment of a battery information management device for a film-clad battery according to the present invention. FIG. 2A is an enlarged front view showing the periphery of the battery information management device. FIG. 2B is a side view from the direction A in FIG. 2A and is an enlarged view of only the periphery of the battery information management device. 図３は、本発明のフィルム外装電池の電池情報管理装置の他の実施態様を説明する図であって、電池情報管理装置の周囲を拡大して示す正面図である。　図３Ａは、三角形状の切り欠き部を設けた電池情報管理装置を説明する図である。　図３Ｂは、半円状の切り欠き部を設けた電池情報管理装置を説明する図である。　図３Ｃは、四角形状の切り欠き部を設けた電池情報管理装置を説明する図である。FIG. 3 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery of the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner. FIG. 3A is a diagram illustrating a battery information management device provided with a triangular cutout. FIG. 3B is a diagram illustrating a battery information management device provided with a semicircular cutout. FIG. 3C is a diagram illustrating a battery information management device provided with a rectangular cutout. 図４は、本発明のフィルム外装電池の電池情報管理装置の他の実施態様を説明する図であり、電池情報管理装置の周囲を拡大して示す正面図である。　図４Ａは、断面が円形の貫通孔を設けた電池情報管理装置を説明する図である。　図４Ｂは、断面が三角形状の貫通孔を設けた電池情報管理装置を説明する図である。　図４Ｃは、断面が円形の貫通孔、断面が三角形状の貫通孔、断面が長方形状の貫通孔、断面が五角形状の貫通孔、および断面が菱形状の貫通孔を設けた電池情報管理装置を説明する図である。FIG. 4 is a diagram illustrating another embodiment of the battery information management device for a film-clad battery according to the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner. FIG. 4A is a diagram illustrating a battery information management device provided with a through-hole having a circular cross section. FIG. 4B is a diagram for explaining a battery information management device provided with a through-hole having a triangular cross section. FIG. 4C shows a battery information management device provided with a through-hole having a circular cross-section, a through-hole having a triangular cross-section, a through-hole having a rectangular cross-section, a pentagonal through-hole, and a rhombo-shaped through-hole. FIG. 図５は、本発明のフィルム外装電池の電池情報管理装置の他の実施態様を説明する図である。　図５Ａは、電池情報管理装置の周囲を拡大して示す正面図である。図５Ｂは、図５ＡにおいてＡの方向からの側面図である。FIG. 5 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery according to the present invention. FIG. 5A is an enlarged front view showing the periphery of the battery information management device. FIG. 5B is a side view from the direction A in FIG. 5A. 図６は、本発明のフィルム外装電池の電池情報管理装置の他の実施態様を説明する図である。FIG. 6 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery according to the present invention. 図７は、従来のフィルム外装電池の一例を示す図である。FIG. 7 is a diagram showing an example of a conventional film-clad battery.
　以下に、図面を参照して本発明を説明する。
　図１は、本発明のフィルム外装電池の正面図である。
　フィルム外装電池１は、正極電極と負極電極をセパレーターを介して積層した電池要素を、アルミニウム箔の一方の面に易接合性フィルムを、他方の面にポリエチレンテレフタレートフィルムやポリアミドフィルムのような強度が大きなフィルムの積層したフィルム状外装材３で覆い、内面の易接合性フィルム面の熱融着によって周囲に熱融着部５を形成して封口し、熱融着部５からは、正極タブ７、負極タブ９を取り出している。
　本発明のフィルム外装電池１の熱融着部５には、三次元状の識別情報を記録した電池情報管理装置１１がフィルム状外装材と一体に形成されている。電池情報管理装置１１には、電池の種類、製造ロット番号、製造日時、および製造工程履歴等の電池の管理に必要な識別情報が三次元状に記録されている。 The present invention will be described below with reference to the drawings.
FIG. 1 is a front view of the film-clad battery of the present invention.
The film-clad battery 1 has a battery element in which a positive electrode and a negative electrode are stacked with a separator interposed therebetween, an easy-bonding film on one surface of an aluminum foil, and a strength such as a polyethylene terephthalate film or a polyamide film on the other surface. Covered with a film-like exterior material 3 on which a large film is laminated, and heat-sealed on the inner surface of the easily-bondable film surface to form a heat-sealed part 5 and seal it. The negative electrode tab 9 is taken out.
A battery information management device 11 in which three-dimensional identification information is recorded is formed integrally with the film-shaped exterior material in the heat-sealing portion 5 of the film-cased battery 1 of the present invention. In the battery information management device 11, identification information necessary for battery management such as battery type, production lot number, production date and time, and production process history is recorded in a three-dimensional manner.
　電池情報管理装置１１は、熱融着部５に、三次元状の情報を記録した部材を押し当てて、フィルム状外装材の熱融着時に同時に刻設することができるが、フィルム状外装材の熱融着後に形成しても良い。また、フィルム状外装材とは別体として三次元状の情報を記録した部材をフィルム状外装材の熱融着部に熱的に接合して一体化することができる。図では、一箇所のみに電池情報管理装置１１を形成する例を示したが、一箇所のみではなく複数の箇所に設けることもできる。 Although the battery information management apparatus 11 can press the member which recorded the three-dimensional information against the heat sealing | fusion part 5, and can engrave simultaneously at the time of the heat sealing | fusion of a film-like exterior material, It may be formed after heat sealing. In addition, a member in which three-dimensional information is recorded as a separate body from the film-shaped exterior material can be thermally joined and integrated with the heat-sealed portion of the film-shaped exterior material. In the figure, an example in which the battery information management device 11 is formed only at one place is shown, but it can be provided at a plurality of places instead of only one place.
　電池情報管理装置１１の三次元状の情報は、識別部に凸部、凹部、切り欠き、穴、あるいは傾斜面を有する立体形状等によって作製することができる。また、三次元状の情報には、目視によって確認できるもの、あるいは光学的な読取手段を利用するもののいずれをも利用することができる。 The three-dimensional information of the battery information management device 11 can be produced by a three-dimensional shape having a convex part, a concave part, a notch, a hole, or an inclined surface in the identification part. As the three-dimensional information, information that can be visually confirmed or information that uses optical reading means can be used.
　図２は、本発明のフィルム外装電池の電池情報管理装置の一実施態様を説明する図である。図２Ａは、電池情報管理装置の周囲を拡大して示す正面図である。図２Ｂは、図２ＡにおいてＡの方向からの側面図であって、電池情報管理装置の周囲のみを拡大して表示した図である。
　負極タブ９近傍の融着部５に形成された電池情報管理装置１１は、図２Ａの正面側に突出した複数個の凸部１２と、反対側に突出し、正面側から見ると窪んだ凹部１３によって構成されており、凸部１２と凹部１３の位置の組み合わせによって多くの情報を表現することができる。
　図２Ｂに示すように、電池情報管理装置１１の凸部１２、凹部１３は、側面からも容易に確認することができる。したがって、本発明のフィルム外装電池１は、複数個を積層して作製した積層体を構成する個々のフィルム外装電池を積層体の側面から電池情報管理装置１１によって識別することが可能となる。 FIG. 2 is a diagram for explaining one embodiment of a battery information management device for a film-clad battery according to the present invention. FIG. 2A is an enlarged front view showing the periphery of the battery information management device. FIG. 2B is a side view from the direction A in FIG. 2A and is an enlarged view of only the periphery of the battery information management device.
The battery information management device 11 formed in the fusion part 5 in the vicinity of the negative electrode tab 9 includes a plurality of convex parts 12 projecting to the front side in FIG. 2A and a concave part 13 projecting to the opposite side and recessed when viewed from the front side. A large amount of information can be expressed by the combination of the positions of the convex portion 12 and the concave portion 13.
As shown in FIG. 2B, the convex portion 12 and the concave portion 13 of the battery information management device 11 can be easily confirmed from the side surface. Therefore, in the film-clad battery 1 of the present invention, it is possible to identify individual film-clad batteries constituting a laminate produced by laminating a plurality by the battery information management device 11 from the side of the laminate.
　図３は、本発明のフィルム外装電池の電池情報管理装置の他の実施態様を説明する図であり、電池情報管理装置の周囲を拡大して示す正面図である。
　図３Ａで示す電池情報管理装置１１は、三角形状の切り欠き部１４で構成されている。三角形状の切り欠き部の数、大きさ、設ける位置等によって情報を識別することができる。
　また、図３Ｂで示す電池情報管理装置１１は、円弧をはじめとする曲線状の切り欠き部１５で構成されている。曲線状の切り欠き部の数、大きさ、設ける位置等によって情報を識別することができる。 FIG. 3 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery of the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner.
The battery information management device 11 shown in FIG. 3A is configured by a triangular cutout portion 14. Information can be identified by the number, size, location, etc. of the triangular cutouts.
Further, the battery information management device 11 shown in FIG. 3B includes a curved cutout portion 15 including an arc. Information can be identified by the number, size, position, etc. of the curved notch.
　また、図３Ｃで示す電池情報管理装置１１は、四角形状の切り欠き部１６で構成されている。四角形状の切り欠き部の数、大きさ、設ける位置等によって情報を識別することができる。 Further, the battery information management device 11 shown in FIG. 3C is configured by a rectangular cutout portion 16. Information can be identified by the number, size, location, etc. of the rectangular cutouts.
　図４は、本発明のフィルム外装電池の電池情報管理装置の他の実施態様を説明する図であり、電池情報管理装置の周囲を拡大して示す正面図である。
　図４Ａは、負極タブ９近傍の融着部５に形成された電池情報管理装置１１は、断面が円形の貫通孔１７で構成されている。断面が円形の貫通孔の数、大きさ、設ける位置等によって情報を識別することができる。
　また、図４Ｂで示す電池情報管理装置１１は、断面が三角形状の貫通孔１８で構成されている。断面が三角形状の貫通孔の数、大きさ、それぞれ設ける位置、配置する方向等によって情報を識別することができる。 FIG. 4 is a diagram illustrating another embodiment of the battery information management device for a film-clad battery according to the present invention, and is a front view showing the periphery of the battery information management device in an enlarged manner.
In FIG. 4A, the battery information management device 11 formed in the fusion part 5 in the vicinity of the negative electrode tab 9 includes a through hole 17 having a circular cross section. Information can be identified by the number, size, position, and the like of through-holes having a circular cross section.
Moreover, the battery information management apparatus 11 shown in FIG. 4B includes a through hole 18 having a triangular cross section. Information can be identified by the number and size of through-holes having a triangular cross-section, the position of each through-hole, the direction of arrangement, and the like.
　また、図４Ｃで示す負極タブ９近傍の融着部５に形成された電池情報管理装置１１は、断面が円形の貫通孔１７、断面が三角形状の貫通孔１８、断面が長方形状の貫通孔１９、断面が五角形状の貫通孔２０、断面が三角形状の貫通孔１８とは向きが異なる断面が三角形状の貫通孔１８Ｂ、断面が菱形状の貫通孔２１で構成されている。
　これらの形状の貫通孔の数、大きさ、設ける位置、配置する方向等によって情報を識別することができる。 Moreover, the battery information management apparatus 11 formed in the fusion | melting part 5 vicinity of the negative electrode tab 9 shown in FIG. 4C has the through-hole 17 with a circular cross section, the through-hole 18 with a triangular cross section, and the through-hole with a rectangular cross section. 19, a through-hole 20 having a pentagonal cross-section, a through-hole 18B having a triangular cross-section different from the through-hole 18 having a triangular cross-section, and a through-hole 21 having a rhombic cross-section.
Information can be identified by the number, size, location, arrangement direction, and the like of through holes having these shapes.
　以上のいずれの実施形態においても、凹凸、切り込み、貫通孔等を電池情報管理装置に形成することによって、電池情報管理装置を設けていない部分に比べて融着部の開裂に対する特性が変化する。
　したがって、これらの電池情報管理装置を形成することによって内部圧力の増大の場合に圧力を開放する安全弁として作用する部分に比べて開裂が早く起こらないように電池情報管理装置を形成する部分の融着部を他の部分に比べて電池の内面から電池の外周までの融着部の幅を大きくすることが必要である。 In any of the above-described embodiments, by forming irregularities, cuts, through-holes, and the like in the battery information management device, the characteristics of the fused portion for tearing change as compared with a portion where the battery information management device is not provided.
Therefore, by forming these battery information management devices, the fusion of the portions forming the battery information management device so that the cleavage does not occur earlier than the portion that acts as a safety valve that releases the pressure when the internal pressure increases. It is necessary to increase the width of the fusion part from the inner surface of the battery to the outer periphery of the battery as compared with other parts.
　一方、電池情報管理装置を形成する部分の熱融着部の幅と、三次元状の情報記録のための切り欠き部、貫通孔の大きさ、形状等を調整することによって、電池情報管理装置を最も低い圧力で開裂する部分とすることによって他の個所に圧力開放弁として作用する個所を設けずに電池情報管理装置を圧力開放部として活用しても良い。 On the other hand, the battery information management device is adjusted by adjusting the width of the heat fusion portion of the portion forming the battery information management device, the notch for recording three-dimensional information, the size and shape of the through hole, and the like. The battery information management device may be used as a pressure release part without providing a part that acts as a pressure release valve at another part by making the part to be cleaved at the lowest pressure.
　図５は、本発明のフィルム外装電池の電池情報管理装置の他の実施態様を説明する図である。
　図５Ａは、電池情報管理装置の周囲を拡大して示す正面図である。図５Ｂは、図５ＡにおいてＡの方向からの側面図である。
　図５に示すフィルム外装電池１は、電池情報管理装置１１に傾斜面４０で構成した三次元状の情報記録部を有している。
　電池情報管理装置１１は、図２から図４で説明したものと同様に、熱融着部５を所定の傾斜面４０を有する部材で押圧して熱融着部５の表面に傾斜面を形成するか、あるいは所定の傾斜面を形成した電池情報管理装置１１を形成した部材を熱融着部５に熱融着で一体化することによって作製することができる。傾斜面２５は、イメージセンサー等を備えた読取手段によって情報を読み取ることができる。 FIG. 5 is a diagram for explaining another embodiment of the battery information management device for a film-clad battery according to the present invention.
FIG. 5A is an enlarged front view showing the periphery of the battery information management device. FIG. 5B is a side view from the direction A in FIG. 5A.
The film-clad battery 1 shown in FIG. 5 has the three-dimensional information recording part comprised by the inclined surface 40 in the battery information management apparatus 11. FIG.
The battery information management device 11 forms an inclined surface on the surface of the heat fusion part 5 by pressing the heat fusion part 5 with a member having a predetermined inclined surface 40 in the same manner as described with reference to FIGS. Alternatively, it can be produced by integrating the member on which the battery information management device 11 having a predetermined inclined surface is formed with the heat fusion part 5 by heat fusion. The inclined surface 25 can read information by reading means having an image sensor or the like.
　図６は、本発明のフィルム外装電池の他の実施態様を説明する図である。
　図６は、フィルム外装電池１－１からフィルム外装電池１－７までの７個を積層して一体化した電池ブロックの側面図である。
　本発明のフィルム外装電池１－１からフィルム外装電池１－７は、いずれも電池の外周部の熱融着部５に三次元状に情報を設けた電池情報管理装置１１が形成されている。
　このように、外周部に三次元状に識別情報を設けたので、多数のフィルム状外装電池を積層した場合にも、各フィルム外装電池１－１からフィルム外装電池１－７の各電池情報管理装置１１の三次元情報を容易に確認することができるので、電池ブロックの形成後の各フィルム外装電池の確認作業が容易になる。 FIG. 6 is a view for explaining another embodiment of the film-clad battery of the present invention.
FIG. 6 is a side view of a battery block in which seven pieces from the film-clad battery 1-1 to the film-clad battery 1-7 are laminated and integrated.
In each of the film-clad battery 1-1 to the film-clad battery 1-7 of the present invention, a battery information management device 11 is provided in which information is provided in a three-dimensional manner in the heat-sealing part 5 on the outer peripheral part of the battery.
Thus, since the identification information is provided three-dimensionally on the outer periphery, each battery information management of each film-covered battery 1-1 to film-covered battery 1-7 even when a large number of film-shaped battery is stacked. Since the three-dimensional information of the apparatus 11 can be easily confirmed, the confirmation work of each film-clad battery after the formation of the battery block is facilitated.
　本発明に係るフィルム外装電池によれば、熱融着部に一体に三次元状に情報を記録した電池情報管理装置を設けたので、溶剤や熱などの外的要因に影響されずに記録情報を読み取れることができる。その結果、フィル状外装電池のより確実な管理が可能となる。また電池情報管理装置は、フィルム状外装材の外周部の熱融着部に位置しているので、複数のフィルム外装電池を重ねた場合でも、横方向から記録情報を読み取ることができるため、他品種の混入確認や、製造履歴の確認が容易に行える。 According to the film-clad battery according to the present invention, since the battery information management device that records information in a three-dimensional manner is provided integrally with the heat fusion part, the recorded information is not affected by external factors such as solvent and heat. Can be read. As a result, more reliable management of the fill-shaped exterior battery is possible. In addition, since the battery information management device is located in the heat-sealed portion of the outer peripheral portion of the film-shaped exterior material, the recorded information can be read from the lateral direction even when a plurality of film-cased batteries are stacked. It is easy to check the mixing of varieties and the manufacturing history.
　電池の長期間の使用中においても識別情報が消失することがなく、しかも識別情報の確認が容易であるトレーサービリティーが優れた信頼性の高いフィルム状外装材で封口したフィルム外装電池を提供することができる。 Provided is a film-covered battery that is sealed with a highly reliable film-like exterior material that has excellent traceability so that identification information is not lost even during long-term use of the battery, and confirmation of the identification information is easy. be able to.
　１・・・フィルム外装電池、３・・・フィルム状外装材、５・・・熱融着部、７・・・正極タブ、９・・・負極タブ、１１・・・電池情報管理装置、２１・・・凸部、２３・・・凹部、２５・・・三角形状の切り欠き部、２７・・・半円状の切り欠き部、２９・・・四角形状の切り欠き部、３１・・・断面が円形の貫通孔、３３Ａ、３３Ｂ・・・断面が三角形状の貫通孔、３５・・・断面が長方形状の貫通孔、３７・・・断面が五角形状の貫通孔、３９・・・断面が菱形状の貫通孔、４０・・・傾斜面 DESCRIPTION OF SYMBOLS 1 ... Film-clad battery, 3 ... Film-like exterior material, 5 ... Thermal fusion part, 7 ... Positive electrode tab, 9 ... Negative electrode tab, 11 ... Battery information management apparatus, 21 ... convex part, 23 ... concave part, 25 ... triangular cutout part, 27 ... semicircular cutout part, 29 ... square cutout part, 31 ... Through hole with a circular cross section, 33A, 33B ... Triangular through hole, 35 ... Rectangular through hole, 37 ... Pentagonal through hole, 39 ... Cross section Is a diamond-shaped through-hole, 40 ... inclined surface

Claims (5)

  1. 　三次元状の情報を記録した情報記録部を備えたことを特徴とする電池情報管理装置。 A battery information management device comprising an information recording unit that records three-dimensional information.
  2. 　三次元状の情報が、凸部、凹部、切り欠き、穴、傾斜面を有する立体形状の少なくともいずれか一つで形成されたことを特徴とする請求項１記載の電池情報管理装置。 3. The battery information management apparatus according to claim 1, wherein the three-dimensional information is formed in at least one of a three-dimensional shape having a convex portion, a concave portion, a notch, a hole, and an inclined surface.
  3. 　正極電極と負極電極とをセパレーターを介して積層した電池要素と、
    　前記電池要素を外装するフィルム状外装材を備え、
    　前記フィルム状外装材の熱融着部に、三次元状の情報を記録した電池情報管理装置を一体に設けたことを特徴とする電池。     A battery element in which a positive electrode and a negative electrode are laminated via a separator;
    Comprising a film-like packaging material for packaging the battery element;
    A battery characterized in that a battery information management device in which three-dimensional information is recorded is integrally provided in a heat-sealed portion of the film-shaped exterior material.
  4. 　前記電池情報管理装置が、フィルム状外装材の熱融着部に直接形成されたもの、あるいは前記フィルム状外装材とは別の部材に識別情報を記録した電池情報管理装置を前記熱融着部に一体に接合したものであることを特徴とする請求項３記載の電池。 The battery information management device includes a battery information management device in which identification information is recorded on a member formed directly on the heat-sealed portion of the film-shaped exterior material or a member different from the film-shaped exterior material. The battery according to claim 3, wherein the battery is integrally joined to the battery.
  5. 　リチウムイオン二次電池であることを特徴とする請求項３又は４のいずれかに記載の電池。 The battery according to claim 3, wherein the battery is a lithium ion secondary battery.
PCT/JP2012/071999 2011-08-31 2012-08-30 Battery information management device and battery WO2013031888A1 (en)

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