JP7229893B2 - battery - Google Patents

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JP7229893B2
JP7229893B2 JP2019200839A JP2019200839A JP7229893B2 JP 7229893 B2 JP7229893 B2 JP 7229893B2 JP 2019200839 A JP2019200839 A JP 2019200839A JP 2019200839 A JP2019200839 A JP 2019200839A JP 7229893 B2 JP7229893 B2 JP 7229893B2
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tab
power generation
generation element
power generating
battery
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JP2021077452A (en
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成人 伊東
茂生 小松
衛 吉岡
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Aisan Industry Co Ltd
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Aisan Industry Co Ltd
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Priority to JP2019200839A priority Critical patent/JP7229893B2/en
Priority to CN202080074413.8A priority patent/CN114631225B/en
Priority to PCT/JP2020/036968 priority patent/WO2021090614A1/en
Priority to KR1020227004402A priority patent/KR20220033503A/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like 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
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0463—Cells or batteries with horizontal or inclined electrodes
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • 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 of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • 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 of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • 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 of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
    • 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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • 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
    • H01M50/543—Terminals
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • 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

Description

本明細書に開示する技術は、電池に関する。 The technology disclosed in this specification relates to batteries.

特許文献１に電池が開示されている。特許文献１の電池は、正極板と負極板が積層されている第１発電要素と、第１発電要素の隣に配置されており、正極板と負極板が積層されている第２発電要素と、第１発電要素と第２発電要素の間に配置されており、第１発電要素と第２発電要素に電気的に接続されている連結タブと、第１発電要素と第２発電要素と連結タブを封止している封止フィルムとを備えている。 A battery is disclosed in Patent Document 1. The battery of Patent Document 1 includes a first power generation element in which a positive electrode plate and a negative electrode plate are laminated, and a second power generation element which is arranged next to the first power generation element and in which a positive electrode plate and a negative electrode plate are laminated. , a connecting tab disposed between the first power generating element and the second power generating element and electrically connected to the first power generating element and the second power generating element; and a connecting tab connecting the first power generating element and the second power generating element. and a sealing film sealing the tab.

特開２００４－５５１５３号公報JP-A-2004-55153

第１発電要素と第２発電要素を備えている電池では、各発電要素の特性（例えば電圧）が測定されることがある。その場合は、各発電要素の一方側の電極タブと他方側の電極タブに測定用の端子が接続される。 In a battery that includes a first power generation element and a second power generation element, the characteristics (for example, voltage) of each power generation element may be measured. In that case, terminals for measurement are connected to the electrode tab on one side and the electrode tab on the other side of each power generation element.

特許文献１の電池では、各発電要素（第１発電要素又は第２発電要素）の特性（例えば電圧）を測定するためには、第１発電要素と第２発電要素の間に配置されている連結タブに測定用の端子を接続する必要がある。しかしながら、特許文献１の電池では、連結タブが封止フィルムによって封止されているので、連結タブに測定用の端子を接続することが難しくなっている。そのため、各発電要素（第１発電要素又は第２発電要素）の特性（例えば電圧）を測定することが難しくなっている。 In the battery of Patent Document 1, in order to measure the characteristics (for example, voltage) of each power generation element (first power generation element or second power generation element), the battery is arranged between the first power generation element and the second power generation element It is necessary to connect the terminal for measurement to the connection tab. However, in the battery of Patent Literature 1, the connection tab is sealed with the sealing film, making it difficult to connect the connection tab to the terminal for measurement. Therefore, it is difficult to measure the characteristics (for example, voltage) of each power generation element (first power generation element or second power generation element).

本明細書は、各発電要素の特性を簡潔な構成で測定することができる技術を提供する。 The present specification provides a technology capable of measuring the characteristics of each power generation element with a simple configuration.

本明細書に開示する電池は、正極板と負極板が積層されている第１発電要素と、前記第１発電要素の隣に配置されており、正極板と負極板が積層されている第２発電要素と、前記第１発電要素と前記第２発電要素の間に配置されており、前記第１発電要素と前記第２発電要素に電気的に接続されている連結タブと、前記第１発電要素と前記第２発電要素の間に配置されており、前記連結タブに電気的に接続されている測定用タブと、前記第１発電要素と前記第２発電要素と前記連結タブと前記測定用タブを封止している封止フィルムとを備えている。前記測定用タブの一端部が前記封止フィルムの内側で前記連結タブに接続されており、前記測定用タブの他端部が前記封止フィルムの外側に露出している。 The battery disclosed in this specification includes a first power generation element in which a positive plate and a negative plate are laminated, and a second power generation element, which is arranged next to the first power generation element and in which a positive plate and a negative plate are laminated. a power generating element, a connecting tab disposed between the first power generating element and the second power generating element and electrically connected to the first power generating element and the second power generating element; and the first power generating element. a measuring tab disposed between the element and the second power generating element and electrically connected to the connecting tab; and the first power generating element, the second power generating element, the connecting tab and the measuring tab. and a sealing film sealing the tab. One end of the measuring tab is connected to the connecting tab inside the sealing film, and the other end of the measuring tab is exposed outside the sealing film.

この構成によれば、測定用タブの他端部が封止フィルムの外側に露出しているので、その他端部に各発電要素の特性（例えば電圧）を測定するための機器（例えば電圧計）を接続することができる。連結タブが封止フィルムによって封止されている構成であっても、測定用タブを通じて連結タブから電気特性を取り出すことができる。そのため、各発電要素の特性を簡潔な構成で測定することができる。 According to this configuration, since the other end of the measuring tab is exposed to the outside of the sealing film, a device (such as a voltmeter) for measuring the characteristics (such as voltage) of each power generating element is attached to the other end. can be connected. Even in a configuration in which the connecting tabs are sealed with a sealing film, electrical properties can be obtained from the connecting tabs through the measurement tabs. Therefore, the characteristics of each power generation element can be measured with a simple configuration.

前記封止フィルムは、前記測定用タブの前記他端部を前記封止フィルムの外側に露出させるための第１開口部を備えていてもよい。この構成によれば、測定用タブの他端部を封止フィルムの外側に容易に露出させることができる。測定用タブが大きくなることを抑制することができる。 The sealing film may have a first opening for exposing the other end of the measurement tab to the outside of the sealing film. With this configuration, the other end of the measurement tab can be easily exposed to the outside of the sealing film. It is possible to suppress the size of the measurement tab.

前記連結タブと前記封止フィルムが前記第１発電要素と前記第２発電要素の間で折り曲げられることによって前記第１発電要素と前記第２発電要素が積層されていてもよい。積層された前記第１発電要素と前記第２発電要素の間に放熱板が配置されていてもよい。 The first power generating element and the second power generating element may be laminated by bending the connecting tab and the sealing film between the first power generating element and the second power generating element. A radiator plate may be arranged between the stacked first power generation element and the second power generation element.

この構成によれば、第１発電要素と第２発電要素の間に配置されている放熱板によって第１発電要素と第２発電要素を同時に冷却することができるので、第１発電要素と第２発電要素を効率良く冷却することができる。 According to this configuration, the first power generation element and the second power generation element can be simultaneously cooled by the radiator plate disposed between the first power generation element and the second power generation element. The power generation element can be efficiently cooled.

前記封止フィルムは、前記第１発電要素と前記第２発電要素の間において前記放熱板の一部が挿入される第２開口部を備えていてもよい。この構成によれば、放熱板が電池の周縁部からはみ出す量を低減することができる。 The sealing film may have a second opening into which a part of the heat sink is inserted between the first power generation element and the second power generation element. With this configuration, it is possible to reduce the amount of protrusion of the heat sink from the peripheral portion of the battery.

前記連結タブは、単一の金属部材から構成されていてもよい。この構成によれば、第１発電要素と第２発電要素の間の構成を簡潔にすることができる。そのため、各発電要素の特性を簡潔な構成で測定することができる。 The connecting tab may consist of a single piece of metal. With this configuration, the configuration between the first power generation element and the second power generation element can be simplified. Therefore, the characteristics of each power generation element can be measured with a simple configuration.

前記連結タブは、前記第１発電要素側の第１金属部材と、前記第２発電要素側の第２金属部材とから構成されていてもよい。この構成によれば、連結タブの第１発電要素側の構成と第２発電要素側の構成のそれぞれを、第１発電要素と第２発電要素のそれぞれに適した構成にすることができる。 The connection tab may be composed of a first metal member on the side of the first power generation element and a second metal member on the side of the second power generation element. According to this configuration, the configuration of the connecting tab on the first power generation element side and the configuration on the second power generation element side can be made suitable for the first power generation element and the second power generation element, respectively.

封止フィルムの周縁部を封止する封止テープを更に備えていてもよい。この構成によれば、封止フィルムから電解液が漏出することを抑制することができる。 A sealing tape that seals the periphery of the sealing film may be further provided. According to this configuration, it is possible to suppress leakage of the electrolytic solution from the sealing film.

第１実施例に係る電池の上面図である。1 is a top view of a battery according to a first example; FIG. 図１のII－II断面図である。FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1; 図１のIII－III断面図である。FIG. 2 is a sectional view taken along line III-III in FIG. 1; 第２実施例に係る電池の上面図である。FIG. 4 is a top view of a battery according to a second embodiment; 第３実施例に係る電池の上面図である。FIG. 10 is a top view of a battery according to a third embodiment; 第４実施例に係る電池の上面図である。FIG. 11 is a top view of a battery according to a fourth example; 第５実施例に係る電池の上面図である。FIG. 11 is a top view of a battery according to a fifth example; 第５実施例に係る電池が折り曲げられている状態を示す断面図である。FIG. 14 is a cross-sectional view showing a state in which the battery according to the fifth embodiment is folded; 第６実施例に係る電池の上面図である。FIG. 11 is a top view of a battery according to a sixth embodiment; 第６実施例に係る電池を模式的に示す斜視図である。FIG. 11 is a perspective view schematically showing a battery according to a sixth example; 図１０の電池を手前側から視た側面図である。FIG. 11 is a side view of the battery in FIG. 10 viewed from the front side; 第７実施例に係る電池の上面図である。FIG. 11 is a top view of a battery according to a seventh embodiment; 第８実施例に係る電池の上面図である。FIG. 11 is a top view of a battery according to an eighth embodiment; 第９実施例に係る電池の上面図である。FIG. 20 is a top view of a battery according to a ninth embodiment; 他の実施例に係る電池の上面図である。FIG. 10 is a top view of a battery according to another example; 他の実施例に係る電池の上面図である。FIG. 10 is a top view of a battery according to another example;

（第１実施例）
第１実施例に係る電池１について図面を参照して説明する。第１実施例に係る電池１は、図１及び図２に示すように、第１発電要素１０と、第２発電要素２０と、連結タブ３０と、測定用タブ６０とを備えている。また、電池１は、第１発電要素１０と第２発電要素２０と連結タブ３０と測定用タブ６０を包んでいる封止フィルム５０を備えている。図１及び図２に示す電池１は、例えばリチウムイオン電池である。第１発電要素１０と第２発電要素２０は、隣り合う状態で配置されている。 (First embodiment)
A battery 1 according to a first embodiment will be described with reference to the drawings. The battery 1 according to the first embodiment includes a first power generation element 10, a second power generation element 20, a connection tab 30, and a measurement tab 60, as shown in FIGS. The battery 1 also includes a sealing film 50 that wraps the first power generating element 10 , the second power generating element 20 , the connecting tab 30 and the measuring tab 60 . The battery 1 shown in FIGS. 1 and 2 is, for example, a lithium ion battery. The first power generation element 10 and the second power generation element 20 are arranged side by side.

第１発電要素１０は、複数の正極板１１と、複数の負極板１２と、複数のセパレータ１３とを備えている。複数の正極板１１と、複数の負極板１２と、複数のセパレータ１３とは、第１発電要素１０と第２発電要素２０が隣り合う方向（Ｘ方向）と直交する方向（Ｚ方向）に積層されている。 The first power generation element 10 includes a plurality of positive electrode plates 11 , a plurality of negative electrode plates 12 and a plurality of separators 13 . A plurality of positive electrode plates 11, a plurality of negative electrode plates 12, and a plurality of separators 13 are laminated in a direction (Z direction) orthogonal to the direction (X direction) in which the first power generation element 10 and the second power generation element 20 are adjacent to each other. It is

各正極板１１は、例えばアルミニウム（Ａｌ）から構成されている。各正極板１１の上面と下面には正極活物質層（不図示）が設けられている。正極活物質層は、例えばリチウムの酸化物（例えば、コバルト酸リチウム、又は、マンガン酸リチウム等）を含む材料から構成されている。第１発電要素１０の正極板１１は、正極リード１４を介して正極タブ４１に接続されている。正極リード１４は、例えばアルミニウム（Ａｌ）から構成されている。 Each positive electrode plate 11 is made of, for example, aluminum (Al). A positive electrode active material layer (not shown) is provided on the upper surface and the lower surface of each positive electrode plate 11 . The positive electrode active material layer is made of, for example, a material containing an oxide of lithium (eg, lithium cobaltate, lithium manganate, or the like). The positive electrode plate 11 of the first power generation element 10 is connected to the positive electrode tab 41 via the positive electrode lead 14 . The positive electrode lead 14 is made of aluminum (Al), for example.

各負極板１２は、例えば銅（Ｃｕ）から構成されている。各負極板１２の上面と下面には負極活物質層（不図示）が設けられている。負極活物質層は、例えばシリコン（ＳｉＣ）又はカーボン（Ｃ）を含む材料から構成されている。第１発電要素１０の負極板１２は、負極リード１５を介して連結タブ３０に接続されている。負極リード１５は、例えば銅（Ｃｕ）から構成されている。 Each negative electrode plate 12 is made of copper (Cu), for example. A negative electrode active material layer (not shown) is provided on the upper surface and the lower surface of each negative electrode plate 12 . The negative electrode active material layer is made of, for example, a material containing silicon (SiC) or carbon (C). The negative plate 12 of the first power generation element 10 is connected to the connecting tab 30 via the negative lead 15 . The negative electrode lead 15 is made of copper (Cu), for example.

セパレータ１３は、正極板１１と負極板１２の間に配置されており、正極板１１と負極板１２に挟まれている。セパレータ１３は、例えばポリプロピレン（ＰＰ）やポリエチレン（ＰＥ）等のポリオレフィン系樹脂から構成されている。 The separator 13 is arranged between the positive electrode plate 11 and the negative electrode plate 12 and sandwiched between the positive electrode plate 11 and the negative electrode plate 12 . The separator 13 is made of polyolefin resin such as polypropylene (PP) or polyethylene (PE).

第２発電要素２０は、複数の正極板２１と、複数の負極板２２と、複数のセパレータ２３とを備えている。第２発電要素２０の正極板２１は、正極リード２４を介して連結タブ３０に接続されている。第２発電要素２０の負極板２２は、負極リード２５を介して負極タブ４２に接続されている。第２発電要素２０の正極板２１と負極板２２とセパレータ２３の構成は、上記の第１発電要素１０の正極板１１と負極板１２とセパレータ１３の構成と同様である。よって、第２発電要素２０については詳細な説明を省略する。 The second power generating element 20 includes multiple positive electrode plates 21 , multiple negative electrode plates 22 , and multiple separators 23 . The positive electrode plate 21 of the second power generation element 20 is connected to the connecting tab 30 via the positive electrode lead 24 . The negative plate 22 of the second power generating element 20 is connected to the negative tab 42 via the negative lead 25 . The configurations of the positive electrode plate 21, the negative electrode plate 22, and the separator 23 of the second power generation element 20 are the same as the configurations of the positive electrode plate 11, the negative electrode plate 12, and the separator 13 of the first power generation element 10 described above. Therefore, detailed description of the second power generation element 20 is omitted.

第１発電要素１０と第２発電要素２０の間に連結タブ３０が配置されている。連結タブ３０は、第１発電要素１０と第２発電要素２０が隣り合う方向（Ｘ方向）に延びている。連結タブ３０は、第１発電要素１０と第２発電要素２０に電気的に接続されている。連結タブ３０の第１発電要素１０側の端部３１が、複数の負極リード１５を介して第１発電要素１０の複数の負極板１２に電気的に接続されている。連結タブ３０の第２発電要素２０側の端部３２が、複数の正極リード２４を介して第２発電要素２０の複数の負極板２２に電気的に接続されている。連結タブ３０は、負極リード１５と正極リード２４を介して第１発電要素１０と第２発電要素２０を連結している。連結タブ３０は、単一の金属部材から構成されている。連結タブ３０は、例えば銅（Ｃｕ）又はアルミニウム（Ａｌ）から形成されている。連結タブ３０は薄板状の部材である。 A connecting tab 30 is arranged between the first power generating element 10 and the second power generating element 20 . The connecting tab 30 extends in the direction (X direction) in which the first power generation element 10 and the second power generation element 20 are adjacent to each other. The connecting tab 30 is electrically connected to the first power generating element 10 and the second power generating element 20 . An end portion 31 of the connecting tab 30 on the first power generation element 10 side is electrically connected to the plurality of negative electrode plates 12 of the first power generation element 10 via the plurality of negative electrode leads 15 . An end portion 32 of the connecting tab 30 on the second power generation element 20 side is electrically connected to the plurality of negative electrode plates 22 of the second power generation element 20 via the plurality of positive electrode leads 24 . The connecting tab 30 connects the first power generating element 10 and the second power generating element 20 via the negative lead 15 and the positive lead 24 . The connecting tab 30 is constructed from a single piece of metal. The connecting tab 30 is made of copper (Cu) or aluminum (Al), for example. The connecting tab 30 is a thin plate member.

連結タブ３０には測定用タブ６０が接続されている。測定用タブ６０は、第１発電要素１０と第２発電要素２０の間に配置されている。測定用タブ６０は、連結タブ３０が延びる方向（Ｘ方向）と直交する方向（Ｙ方向）に延びている。測定用タブ６０の連結タブ３０側の端部６１が、封止フィルム５０の内側で連結タブ３０に接続されている。測定用タブ６０は、連結タブ３０のＸ方向における中央部に接続されている。測定用タブ６０は、連結タブ３０と同じ材料から形成されている。測定用タブ６０と連結タブ３０は、単一の金属部材から一体的に構成されている。測定用タブ６０は、例えば銅（Ｃｕ）又はアルミニウム（Ａｌ）から構成されている。測定用タブ６０の連結タブ３０と反対側の端部６２は、封止フィルム５０の外側に露出している。この端部６２は、例えば、第１発電要素１０及び／又は第２発電要素２０の特性（例えば電圧）を測定するための機器（例えば電圧計）に接続される。測定用タブ６０を通して連結タブ３０から電気特性を取り出すことができる。例えば、第１発電要素１０及び／又は第２発電要素２０の電圧特性を取り出すことができる。 A measuring tab 60 is connected to the connecting tab 30 . The measuring tab 60 is arranged between the first power generating element 10 and the second power generating element 20 . The measuring tab 60 extends in a direction (Y direction) orthogonal to the direction (X direction) in which the connecting tab 30 extends. An end 61 of the measuring tab 60 on the connecting tab 30 side is connected to the connecting tab 30 inside the sealing film 50 . The measuring tab 60 is connected to the central portion of the connecting tab 30 in the X direction. Measuring tab 60 is made of the same material as connecting tab 30 . The measuring tab 60 and the connecting tab 30 are integrally constructed from a single metal member. The measurement tab 60 is made of copper (Cu) or aluminum (Al), for example. An end portion 62 of the measuring tab 60 opposite to the connecting tab 30 is exposed to the outside of the sealing film 50 . This end 62 is connected, for example, to a device (eg, a voltmeter) for measuring the characteristics (eg, voltage) of the first power generation element 10 and/or the second power generation element 20 . Electrical properties can be taken from the connecting tabs 30 through the measuring tabs 60 . For example, voltage characteristics of the first power generation element 10 and/or the second power generation element 20 can be retrieved.

第１発電要素１０に接続されている正極タブ４１は、第１発電要素１０の隣に配置されている。正極タブ４１は、第１発電要素１０を挟んで連結タブ３０と反対側に配置されている。正極タブ４１は、第１発電要素１０と第２発電要素２０が隣り合う方向（Ｘ方向）に延びている。正極タブ４１の第１発電要素１０側の端部４３は、複数の正極リード１４を介して第１発電要素１０の複数の正極板１１に電気的に接続されている。正極タブ４１の第１発電要素１０の反対側の端部４４は、封止フィルム５０の外側に露出している。正極タブ４１は、例えばアルミニウム（Ａｌ）から構成されている。正極タブ４１は薄板状の部材である。 The positive electrode tab 41 connected to the first power generation element 10 is arranged next to the first power generation element 10 . The positive electrode tab 41 is arranged on the opposite side of the connecting tab 30 with the first power generation element 10 interposed therebetween. The positive electrode tab 41 extends in the direction (X direction) in which the first power generating element 10 and the second power generating element 20 are adjacent to each other. An end portion 43 of the positive electrode tab 41 on the first power generation element 10 side is electrically connected to the plurality of positive electrode plates 11 of the first power generation element 10 via the plurality of positive electrode leads 14 . An end portion 44 of the positive electrode tab 41 opposite to the first power generation element 10 is exposed to the outside of the sealing film 50 . The positive electrode tab 41 is made of, for example, aluminum (Al). The positive electrode tab 41 is a thin plate member.

第２発電要素２０に接続されている負極タブ４２は、第２発電要素２０の隣に配置されている。負極タブ４２は、第２発電要素２０を挟んで連結タブ３０と反対側に配置されている。負極タブ４２は、第１発電要素１０と第２発電要素２０が隣り合う方向（Ｘ方向）に延びている。負極タブ４２の第２発電要素２０側の端部４６は、複数の負極リード２５を介して第２発電要素２０の複数の負極板２２に電気的に接続されている。負極タブ４２の第２発電要素２０と反対側の端部４６は、封止フィルム５０の外側に露出している。負極タブ４２は、例えば銅（Ｃｕ）から構成されている。負極タブ４２は薄板状の部材である。 A negative electrode tab 42 connected to the second power generation element 20 is arranged next to the second power generation element 20 . The negative electrode tab 42 is arranged on the opposite side of the connecting tab 30 with the second power generating element 20 interposed therebetween. The negative electrode tab 42 extends in the direction (X direction) in which the first power generation element 10 and the second power generation element 20 are adjacent to each other. An end portion 46 of the negative electrode tab 42 on the second power generation element 20 side is electrically connected to the plurality of negative electrode plates 22 of the second power generation element 20 via a plurality of negative electrode leads 25 . An end portion 46 of the negative electrode tab 42 opposite to the second power generation element 20 is exposed to the outside of the sealing film 50 . The negative electrode tab 42 is made of copper (Cu), for example. The negative electrode tab 42 is a thin plate member.

封止フィルム５０は、上記の各構成要素を封止している。封止フィルム５０は、第１フィルム５１と第２フィルム５２を備えている。第１フィルム５１と第２フィルム５２の間に、第１発電要素１０と第２発電要素２０と連結タブ３０と測定用タブ６０が配置されている。第１フィルム５１は、第１発電要素１０と第２発電要素２０と連結タブ３０と測定用タブ６０の上側に配置されている。第２フィルム５２は、第１発電要素１０と第２発電要素２０と連結タブ３０と測定用タブ６０の下側に配置されている。第１フィルム５１と第２フィルム５２は、第１発電要素１０と第２発電要素２０と連結タブ３０と測定用タブ６０を覆っている。第１フィルム５１と第２フィルム５２は、第１発電要素１０の全部と、第２発電要素２０の全部と、連結タブ３０の全部とを覆っている。第１フィルム５１と第２フィルム５２は、測定用タブ６０の一部を覆っている。第１フィルム５１と第２フィルム５２は、測定用タブ６０の連結タブ３０側の端部６１を覆っている。第１フィルム５１と第２フィルム５２は、測定用タブ６０の連結タブ３０と反対側の端部６２は覆っていない。第１フィルム５１と第２フィルム５２は、更に、正極タブ４１の第１発電要素１０側の端部４３と、負極タブ４２の第２発電要素２０側の端部４５を覆っている。第１フィルム５１と第２フィルム５２の間には、更に、電解液が収容されている。封止フィルム５０は、電解液を封止している。 The sealing film 50 seals the components described above. The sealing film 50 has a first film 51 and a second film 52 . Between the first film 51 and the second film 52, the first power generation element 10, the second power generation element 20, the connection tab 30, and the measurement tab 60 are arranged. The first film 51 is arranged above the first power generation element 10 , the second power generation element 20 , the connection tab 30 and the measurement tab 60 . The second film 52 is arranged below the first power generating element 10 , the second power generating element 20 , the connecting tab 30 and the measuring tab 60 . The first film 51 and the second film 52 cover the first power generation element 10 , the second power generation element 20 , the connection tab 30 and the measurement tab 60 . The first film 51 and the second film 52 cover all of the first power generating element 10 , all of the second power generating element 20 , and all of the connecting tabs 30 . The first film 51 and the second film 52 partially cover the measuring tab 60 . The first film 51 and the second film 52 cover the end 61 of the measuring tab 60 on the connecting tab 30 side. The first film 51 and the second film 52 do not cover the end 62 of the measuring tab 60 opposite the connecting tab 30 . The first film 51 and the second film 52 further cover the end 43 of the positive electrode tab 41 on the first power generating element 10 side and the end 45 of the negative electrode tab 42 on the second power generating element 20 side. An electrolytic solution is further contained between the first film 51 and the second film 52 . The sealing film 50 seals the electrolytic solution.

封止フィルム５０としては、例えば、リチウムイオン電池等の外装体として従来使用されているラミネートフィルムを用いることができる。図３に示すように、第１フィルム５１は、保護層１０１と、基材層１０２と、接着層１０３とを備えている。保護層１０１は、第１フィルム５１の外面側（封止フィルム５０の外面側）に配置されている。保護層１０１は、例えば、高融点樹脂（例えばポリエチレンテレフタレート（ＰＥＴ）、ポリテトラフルオロエチレン（ＰＴＦＥ）、ポリアミド（ＰＡ）系樹脂）から構成されている。基材層１０２は、保護層１０１と接着層１０３の間に配置されている。基材層１０２は、例えば、金属箔（例えばアルミニウム箔、スチール箔）から構成されている。接着層１０３は、第１フィルム５１の内面側（封止フィルム５０の内面側）に配置されている。接着層１０３は、例えば、熱融着性樹脂（比較的低融点である樹脂、例えばエチレンビニルアセテート、或いはポリエチレン、ポリプロピレン等のオレフィン系樹脂）から構成されている。 As the sealing film 50, for example, a laminate film conventionally used as an outer package of a lithium ion battery or the like can be used. As shown in FIG. 3, the first film 51 includes a protective layer 101, a substrate layer 102, and an adhesive layer 103. As shown in FIG. The protective layer 101 is arranged on the outer surface side of the first film 51 (the outer surface side of the sealing film 50). The protective layer 101 is made of, for example, a high melting point resin (eg, polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), polyamide (PA) resin). The base layer 102 is arranged between the protective layer 101 and the adhesive layer 103 . The base material layer 102 is made of, for example, metal foil (eg, aluminum foil, steel foil). The adhesive layer 103 is arranged on the inner surface side of the first film 51 (the inner surface side of the sealing film 50). The adhesive layer 103 is made of, for example, a heat-fusible resin (resin having a relatively low melting point, such as ethylene vinyl acetate or olefin resin such as polyethylene or polypropylene).

第２フィルム５２は、保護層２０１と、基材層２０２と、接着層２０３とを備えている。第２フィルム５２の保護層２０１と基材層２０２と接着層２０３の構成は、第１フィルム５１の保護層１０１と基材層１０２と接着層１０３の構成と同様である。よって、第２フィルム５２については詳細な説明を省略する。 The second film 52 includes a protective layer 201 , a base layer 202 and an adhesive layer 203 . The structures of the protective layer 201 , the base layer 202 and the adhesive layer 203 of the second film 52 are the same as the structures of the protective layer 101 , the base layer 102 and the adhesive layer 103 of the first film 51 . Therefore, detailed description of the second film 52 is omitted.

図１に示すように、第１フィルム５１と第２フィルム５２は、第１発電要素１０と第２発電要素２０の周囲で互いに接着されている。第１フィルム５１の接着層１０３と第２フィルム５２の接着層２０３とが互いに熱溶着によって接着されている。図１では、第１フィルム５１と第２フィルム５２が接着されている部分である接着部５３を一点鎖線で示している。接着部５３は、第１発電要素１０と第２発電要素２０を囲んでいる。接着部５３は、第１発電要素１０と第２発電要素２０の周りを一周している。第１フィルム５１と第２フィルム５２が互いに接着されることによって封止フィルム５０が構成される。封止フィルム５０の複数の辺のうちの第１発電要素１０と第２発電要素２０が並ぶ方向（Ｘ方向）に沿う一辺５４から外側に向かって測定用タブ６０の端部６２が突出している。図３に示すように、測定用タブ６０の外周面に第１フィルム５１の接着層１０３と、第２フィルム５２の接着層２０３とが密着している。 As shown in FIG. 1 , the first film 51 and the second film 52 are adhered to each other around the first power generation element 10 and the second power generation element 20 . The adhesive layer 103 of the first film 51 and the adhesive layer 203 of the second film 52 are adhered to each other by thermal welding. In FIG. 1, an adhesive portion 53, which is a portion where the first film 51 and the second film 52 are adhered, is indicated by a dashed line. The bonding portion 53 surrounds the first power generation element 10 and the second power generation element 20 . The bonding portion 53 encircles the first power generation element 10 and the second power generation element 20 . The sealing film 50 is constructed by bonding the first film 51 and the second film 52 together. An end portion 62 of the measurement tab 60 protrudes outward from one side 54 of the plurality of sides of the sealing film 50 along the direction (X direction) in which the first power generating element 10 and the second power generating element 20 are arranged. . As shown in FIG. 3 , the adhesive layer 103 of the first film 51 and the adhesive layer 203 of the second film 52 are in close contact with the outer peripheral surface of the measurement tab 60 .

以上、第１実施例に係る電池１について説明した。上記の説明から明らかなように、電池１は、第１発電要素１０と第２発電要素２０の間で連結タブ３０に電気的に接続されている測定用タブ６０を備えている。測定用タブ６０の連結タブ３０側の端部６１が封止フィルム５０の内側で連結タブ３０に接続されており、測定用タブ６０の連結タブ３０と反対側の端部６２は、封止フィルム５０の外側に露出している。 The battery 1 according to the first example has been described above. As is clear from the above description, the battery 1 has a measuring tab 60 electrically connected to the connecting tab 30 between the first power generating element 10 and the second power generating element 20 . An end 61 of the measuring tab 60 on the connecting tab 30 side is connected to the connecting tab 30 inside the sealing film 50, and an end 62 of the measuring tab 60 opposite to the connecting tab 30 is connected to the sealing film. 50 is exposed outside.

この構成によれば、測定用タブ６０の端部６２が封止フィルム５０の外側に露出しているので、測定用タブ６０の端部６２に第１発電要素１０及び／又は第２発電要素２０の電気特性（例えば電圧）を測定するための機器（例えば電圧計）を接続することができる。連結タブ３０が封止フィルム５０によって封止されている構成であっても、各発電要素の特性を測定するための信号（例えば電圧信号）を、測定用タブ６０を通じて連結タブ３０から取り出すことができる。そのため、各発電要素の特性を簡潔な構成で測定することができる。 According to this configuration, since the end portion 62 of the measuring tab 60 is exposed to the outside of the sealing film 50 , the first power generating element 10 and/or the second power generating element 20 is located at the end portion 62 of the measuring tab 60 . A device (eg a voltmeter) can be connected to measure the electrical properties (eg voltage) of the Even in a configuration in which the connecting tab 30 is sealed with the sealing film 50, a signal (for example, a voltage signal) for measuring the characteristics of each power generation element can be extracted from the connecting tab 30 through the measurement tab 60. can. Therefore, the characteristics of each power generation element can be measured with a simple configuration.

また、上記の電池１では、連結タブ３０が単一の金属部材から構成されている。この構成によれば、第１発電要素１０と第２発電要素２０の間の構成を簡潔にすることができる。そのため、各発電要素の特性を簡潔な構成で測定することができる。 Further, in the battery 1 described above, the connecting tab 30 is composed of a single metal member. With this configuration, the configuration between the first power generation element 10 and the second power generation element 20 can be simplified. Therefore, the characteristics of each power generation element can be measured with a simple configuration.

以上、一実施例について説明したが、具体的な態様は上記実施例に限定されるものではない。以下の説明において、上記の説明における構成と同様の構成については、同一の符号を付して説明を省略する。 Although one embodiment has been described above, specific aspects are not limited to the above embodiment. In the following description, the same reference numerals are given to the same configurations as those in the above description, and the description thereof is omitted.

（第２実施例）
第２実施例では、図４に示すように、複数の電池１（第１電池９１と第２電池９２）が並列で配置されている。第１電池９１と第２電池９２は、１個の封止フィルム５０を共有している。 (Second embodiment)
In the second embodiment, as shown in FIG. 4, a plurality of batteries 1 (first battery 91 and second battery 92) are arranged in parallel. The first battery 91 and the second battery 92 share one sealing film 50 .

第１電池９１の連結タブ３０と、第２電池９２の連結タブ３０とは、平行に延びている。第１電池９１の測定用タブ６０と、第２電池９２の測定用タブ６０とは、互いに反対側に延びている。第１電池９１の測定用タブ６０の端部６２と、第２電池９２の測定用タブ６０の端部６２とは、互いに反対側に突出している。 The connection tab 30 of the first battery 91 and the connection tab 30 of the second battery 92 extend parallel. The measuring tab 60 of the first battery 91 and the measuring tab 60 of the second battery 92 extend in opposite directions. The end 62 of the measuring tab 60 of the first battery 91 and the end 62 of the measuring tab 60 of the second battery 92 protrude in opposite directions.

（第３実施例）
第３実施例では、図５に示すように、封止フィルム５０が、第１電池９１の測定用タブ６０の端部６２を封止フィルム５０の外側に露出させるための第１開口部５５を備えている。第１開口部５５は、第１電池９１と第２電池９２の間に形成されている。第１開口部５５は、上面視において略四角形状に形成されている。第１開口部５５は、スリット状に形成されている。 (Third embodiment)
In the third embodiment, the sealing film 50 has a first opening 55 for exposing the end 62 of the measurement tab 60 of the first battery 91 to the outside of the sealing film 50, as shown in FIG. I have. The first opening 55 is formed between the first battery 91 and the second battery 92 . The first opening 55 is formed in a substantially rectangular shape when viewed from above. The first opening 55 is formed in a slit shape.

第１電池９１の測定用タブ６０と、第２電池９２の測定用タブ６０とは、同じ側（図５の上側）に延びている。第２電池９２の測定用タブ６０の端部６２は、図５の上側に突出している。第２電池９２の測定用タブ６０の端部６２が第１開口部５５から封止フィルム５０の外側に露出している。第２電池９２の測定用タブ６０は、封止フィルム５０の外側で屈曲している。 The measurement tab 60 of the first battery 91 and the measurement tab 60 of the second battery 92 extend to the same side (upper side in FIG. 5). The end 62 of the measuring tab 60 of the second battery 92 protrudes upward in FIG. An end portion 62 of the measurement tab 60 of the second battery 92 is exposed outside the sealing film 50 through the first opening 55 . The measurement tab 60 of the second battery 92 is bent outside the sealing film 50 .

上記の説明から明らかなように、第３実施例では、封止フィルム５０が、測定用タブ６０の連結タブ３０と反対側の端部６２を封止フィルム５０の外側に露出させるための第１開口部５５を備えている。この構成によれば、測定用タブ６０の端部６２を封止フィルム５０の外側に容易に露出させることができる。測定用タブ６０が大きくなることを抑制することができる。 As is clear from the above description, in the third embodiment, the sealing film 50 has a first opening for exposing the end portion 62 of the measuring tab 60 opposite to the connecting tab 30 to the outside of the sealing film 50 . An opening 55 is provided. With this configuration, the end portion 62 of the measurement tab 60 can be easily exposed to the outside of the sealing film 50 . It is possible to suppress the size of the measurement tab 60 from becoming large.

（第４実施例）
封止フィルム５０の第１開口部５５の構成は上記の第３実施例の構成に限定されるものではない。第４実施例では、図６に示すように、第１開口部５５が、封止フィルム５０の複数の辺のうちの第１発電要素１０と第２発電要素２０が並ぶ方向（Ｘ方向）に沿う一辺５４に形成されている。第１開口部５５は、封止フィルム５０の一辺５４から連結タブ３０に向かって延びている。第１開口部５５は、第１発電要素１０と第２発電要素２０が並ぶ方向において第１発電要素１０と第２発電要素２０の間の位置に形成されている。測定用タブ６０の端部６２が第１開口部５５から封止フィルム５０の外側に露出している。 (Fourth embodiment)
The structure of the first opening 55 of the sealing film 50 is not limited to the structure of the third embodiment. In the fourth embodiment, as shown in FIG. 6, the first opening 55 extends in the direction (X direction) in which the first power generation element 10 and the second power generation element 20 are arranged among the plurality of sides of the sealing film 50. It is formed along one side 54 along. The first opening 55 extends from one side 54 of the sealing film 50 toward the connecting tab 30 . The first opening 55 is formed at a position between the first power generation element 10 and the second power generation element 20 in the direction in which the first power generation element 10 and the second power generation element 20 are arranged. An end portion 62 of the measurement tab 60 is exposed outside the sealing film 50 through the first opening 55 .

（第５実施例）
上記の実施例では、測定用タブ６０が連結タブ３０のＸ方向における中央部に接続されていたが、この構成に限定されるものではない。第５実施例では、図７に示すように、測定用タブ６０が、連結タブ３０のＸ方向における中央部よりも第１発電要素１０側に接続されている。 (Fifth embodiment)
In the above embodiment, the measuring tab 60 is connected to the central portion of the connecting tab 30 in the X direction, but the configuration is not limited to this. In the fifth embodiment, as shown in FIG. 7, the measuring tab 60 is connected closer to the first power generating element 10 than the central portion of the connecting tab 30 in the X direction.

図８は、電池１が折り曲げられている状態を示す断面図である。図８に示すように、第５実施例では、封止フィルム５０と連結タブ３０が、第１発電要素１０と第２発電要素２０の間の位置で折り曲げられていてもよい。連結タブ３０は、測定用タブ６０が接続されている位置よりも第２発電要素２０側の位置（例えば、Ｘ方向における中央部）で折り曲げられている。封止フィルム５０と連結タブ３０が折り曲げられることによって、第１発電要素１０と第２発電要素２０が封止フィルム５０に封止されている状態でＺ方向に積層されている。 FIG. 8 is a cross-sectional view showing a state in which the battery 1 is folded. As shown in FIG. 8 , in the fifth embodiment, the sealing film 50 and the connecting tab 30 may be folded between the first power generating element 10 and the second power generating element 20 . The connecting tab 30 is bent at a position closer to the second power generating element 20 than the position where the measuring tab 60 is connected (for example, the central portion in the X direction). By bending the sealing film 50 and the connecting tab 30 , the first power generating element 10 and the second power generating element 20 are laminated in the Z direction while being sealed by the sealing film 50 .

積層されている第１発電要素１０と第２発電要素２０の間には放熱板７０が配置されている。第１発電要素１０と放熱板７０と第２発電要素２０がＺ方向に積層されている。放熱板７０は、封止フィルム５０を介して第１発電要素１０と第２発電要素２０によって挟まれている。放熱板７０の上面７１と下面７２に封止フィルム５０が密着している。放熱板７０は、第１発電要素１０と第２発電要素２０で発生する熱を受熱して放熱する。放熱板７０によって第１発電要素１０と第２発電要素２０が冷却される。放熱板７０は、例えば銅（Ｃｕ）又はアルミニウム（Ａｌ）から構成されている。 A radiator plate 70 is arranged between the stacked first power generation element 10 and the second power generation element 20 . The first power generation element 10, the radiator plate 70, and the second power generation element 20 are stacked in the Z direction. The heat sink 70 is sandwiched between the first power generation element 10 and the second power generation element 20 with the sealing film 50 interposed therebetween. The sealing film 50 is in close contact with the upper surface 71 and the lower surface 72 of the heat sink 70 . The radiator plate 70 receives and radiates heat generated by the first power generating element 10 and the second power generating element 20 . The heat sink 70 cools the first power generation element 10 and the second power generation element 20 . The heat sink 70 is made of, for example, copper (Cu) or aluminum (Al).

上記の説明から明らかなように、第５実施例では、連結タブ３０と封止フィルム５０が第１発電要素１０と第２発電要素２０の間で折り曲げられることによって第１発電要素１０と第２発電要素２０が積層されている。積層された第１発電要素１０と第２発電要素２０の間に放熱板７０が配置されている。この構成によれば、放熱板７０によって第１発電要素１０と第２発電要素２０を同時に冷却することができるので、第１発電要素１０と第２発電要素２０を効率良く冷却することができる。 As is clear from the above description, in the fifth embodiment, the connecting tab 30 and the sealing film 50 are folded between the first power generating element 10 and the second power generating element 20, thereby separating the first power generating element 10 and the second power generating element 20 from each other. Power generation elements 20 are stacked. A radiator plate 70 is arranged between the first power generation element 10 and the second power generation element 20 that are stacked. According to this configuration, the first power generation element 10 and the second power generation element 20 can be cooled simultaneously by the radiator plate 70, so that the first power generation element 10 and the second power generation element 20 can be efficiently cooled.

第５実施例の他の例では、測定用タブ６０が、連結タブ３０のＸ方向における中央部よりも第２発電要素２０側に接続されていてもよい。また、連結タブ３０が、測定用タブ６０が接続されている位置よりも第１発電要素１０側の位置で折り曲げられていてもよい。 In another example of the fifth embodiment, the measuring tab 60 may be connected closer to the second power generating element 20 than the central portion of the connecting tab 30 in the X direction. Also, the connecting tab 30 may be bent at a position closer to the first power generating element 10 than the position where the measuring tab 60 is connected.

（第６実施例）
図９に示すように、第６実施例に係る電池１は、第３発電要素８０を更に備えている。第３発電要素８０と第１発電要素１０の間に第２発電要素２０が配置されている。第１発電要素１０、第２発電要素２０及び第３発電要素８０は、直列で接続されている。第３発電要素８０と第２発電要素２０の間に連結タブ３０が配置されている。第３発電要素８０と第２発電要素２０は、連結タブ３０によって連結されている。連結タブ３０の構成については、上述したので詳細な説明を省略する。また、第３発電要素８０の構成は、上述した第２発電要素２０の構成と同様である。更に、第３発電要素８０と第２発電要素２０の関係は、上述した第２発電要素２０と第１発電要素１０の関係と同様である。よって、第３発電要素８０については詳細な説明を省略する。 (Sixth embodiment)
As shown in FIG. 9, the battery 1 according to the sixth embodiment further includes a third power generating element 80. As shown in FIG. The second power generation element 20 is arranged between the third power generation element 80 and the first power generation element 10 . The first power generation element 10, the second power generation element 20 and the third power generation element 80 are connected in series. A connecting tab 30 is arranged between the third power generating element 80 and the second power generating element 20 . The third power generation element 80 and the second power generation element 20 are connected by the connecting tab 30 . Since the configuration of the connecting tab 30 has been described above, detailed description thereof will be omitted. Also, the configuration of the third power generation element 80 is the same as the configuration of the second power generation element 20 described above. Furthermore, the relationship between the third power generation element 80 and the second power generation element 20 is the same as the relationship between the second power generation element 20 and the first power generation element 10 described above. Therefore, detailed description of the third power generation element 80 is omitted.

第６実施例では、封止フィルム５０が複数の第２開口部５７を備えている。第１発電要素１０と第２発電要素２０の間、及び、第２発電要素２０と第３発電要素８０の間のそれぞれに第２開口部５７が形成されている。各第２開口部５７は、封止フィルム５０の複数の辺のうちの測定用タブ６０が封止フィルム５０の外側に突出する一辺５４とは反対側の一辺５６に形成されている。各第２開口部５７は、封止フィルム５０の一辺５６から連結タブ３０に向かって延びている。各第２開口部５７は、スリット状に形成されている。 In the sixth embodiment, the sealing film 50 has multiple second openings 57 . A second opening 57 is formed between the first power generation element 10 and the second power generation element 20 and between the second power generation element 20 and the third power generation element 80 . Each of the second openings 57 is formed on one side 56 of the plurality of sides of the sealing film 50 opposite to the side 54 where the measuring tab 60 protrudes outward from the sealing film 50 . Each second opening 57 extends from one side 56 of sealing film 50 toward connecting tab 30 . Each second opening 57 is formed in a slit shape.

図１０は、第６実施例に係る電池１を模式的に示す斜視図である。図１１は、図１０の電池１を手前側から視た側面図である。図１０及び図１１に示すように、第６実施例では、封止フィルム５０が、第１発電要素１０と第２発電要素２０の間、及び、第２発電要素２０と第３発電要素８０の間で折り曲げられている。複数の連結タブ３０（図９参照）も同様に折り曲げられている。封止フィルム５０と複数の連結タブ３０が折り曲げられることによって、第１発電要素１０と第２発電要素２０と第３発電要素８０とが、封止フィルム５０に封止されている状態でＺ方向に積層されている。 FIG. 10 is a perspective view schematically showing the battery 1 according to the sixth example. FIG. 11 is a side view of the battery 1 of FIG. 10 viewed from the front side. As shown in FIGS. 10 and 11, in the sixth embodiment, the sealing film 50 is provided between the first power generation element 10 and the second power generation element 20 and between the second power generation element 20 and the third power generation element 80. folded in between. A plurality of connecting tabs 30 (see FIG. 9) are similarly folded. By bending the sealing film 50 and the plurality of connection tabs 30, the first power generation element 10, the second power generation element 20, and the third power generation element 80 are sealed with the sealing film 50, and are arranged in the Z direction. is laminated to

積層されている第１発電要素１０と第２発電要素２０の間、及び、第２発電要素２０と第３発電要素８０の間には、それぞれ、放熱板７０が配置されている。第１発電要素１０、第２発電要素２０、第３発電要素８０、及び複数の放熱板７０がＺ方向に積層されている。各放熱板７０は、封止フィルム５０を介して上下の発電要素１０、２０、８０によって挟まれている。各放熱板７０の上面７１と下面７２に封止フィルム５０が密着している。複数の放熱板７０は、複数の発電要素１０、２０、８０で発生する熱を受熱して放熱する。複数の放熱板７０によって複数の発電要素１０、２０、８０が冷却される。各放熱板７０は、例えば銅（Ｃｕ）又はアルミニウム（Ａｌ）から構成されている。各放熱板７０は、本体部７３と一対の突出部７４を備えている。突出部７４は、本体部７３から側方に突出している。各放熱板７０の突出部７４は、封止フィルム５０の各第２開口部５７に挿入されている。各放熱板７０の突出部７４は、各第２開口部５７を通過している。 Radiator plates 70 are arranged between the stacked first power generating element 10 and second power generating element 20 and between the second power generating element 20 and third power generating element 80, respectively. A first power generation element 10, a second power generation element 20, a third power generation element 80, and a plurality of heat sinks 70 are stacked in the Z direction. Each radiator plate 70 is sandwiched between the upper and lower power generation elements 10 , 20 , 80 via the sealing film 50 . A sealing film 50 is in close contact with an upper surface 71 and a lower surface 72 of each heat sink 70 . The plurality of radiator plates 70 receive and radiate heat generated by the plurality of power generation elements 10 , 20 , 80 . A plurality of power generation elements 10 , 20 , 80 are cooled by a plurality of radiator plates 70 . Each heat sink 70 is made of, for example, copper (Cu) or aluminum (Al). Each heat sink 70 has a body portion 73 and a pair of projecting portions 74 . The protruding portion 74 protrudes laterally from the body portion 73 . The protrusions 74 of each heat sink 70 are inserted into the second openings 57 of the sealing film 50 . The projecting portion 74 of each heat sink 70 passes through each second opening 57 .

上記の説明から明らかなように、封止フィルム５０は、第１発電要素１０と第２発電要素２０の間において放熱板７０の突出部７４が挿入される第２開口部５７を備えている。この構成によれば、放熱板７０が電池１の周縁部からはみ出す量を低減することができる。 As is clear from the above description, the sealing film 50 has the second opening 57 into which the projecting portion 74 of the radiator plate 70 is inserted between the first power generating element 10 and the second power generating element 20 . With this configuration, it is possible to reduce the amount of protrusion of the heat sink 70 from the peripheral portion of the battery 1 .

（第７実施例）
第７実施例では、図１２に示すように、電池１が封止テープ９０を更に備えている。封止テープ９０は、封止フィルム５０の複数の辺に密着している。封止テープ９０は、封止フィルム５０の周縁部を封止している。この構成によれば、封止フィルム５０の基材層１０２、２０２を絶縁することができる。 (Seventh embodiment)
In the seventh embodiment, the battery 1 further includes a sealing tape 90 as shown in FIG. The sealing tape 90 adheres to a plurality of sides of the sealing film 50 . The sealing tape 90 seals the periphery of the sealing film 50 . With this configuration, the base layers 102 and 202 of the sealing film 50 can be insulated.

（第８実施例）
第８実施例では、図１３に示すように、電池１が、複数の測定用タブ６０（第１測定用タブ６０１、第２測定用タブ６０２、第３測定用タブ６０３）を備えている。第１測定用タブ６０１の構成は、上記の第１実施例に係る測定用タブ６０の構成と同様である。よって、第１測定用タブ６０１については詳細な説明を省略する。 (Eighth embodiment)
In the eighth embodiment, as shown in FIG. 13, the battery 1 has a plurality of measurement tabs 60 (first measurement tab 601, second measurement tab 602, third measurement tab 603). The configuration of the first measurement tab 601 is the same as the configuration of the measurement tab 60 according to the first embodiment. Therefore, detailed description of the first measurement tab 601 is omitted.

第２測定用タブ６０２は、正極タブ４１に接続されている。第２測定用タブ６０２は、第１発電要素１０の隣に配置されている。第２測定用タブ６０２は、第１発電要素１０を挟んで第１測定用タブ６０１と反対側に配置されている。第２測定用タブ６０２は、連結タブ３０が延びる方向（Ｘ方向）と直交する方向（Ｙ方向）に延びている。第２測定用タブ６０２の正極タブ４１側の端部６２１が、正極タブ４１の第１発電要素１０側の端部４３に接続されている。第２測定用タブ６０２は、正極タブ４１と同じ材料から構成されている。第２測定用タブ６０２と正極タブ４１は、単一の金属部材から一体的に構成されている。第２測定用タブ６０２は、例えばアルミニウム（Ａｌ）から構成されている。第２測定用タブ６０２の正極タブ４１と反対側の端部６２２は、封止フィルム５０の外側に露出している。この端部６２２は、例えば、第１発電要素１０の特性（例えば電圧）を測定するための機器（例えば電圧計）に接続される。 The second measuring tab 602 is connected to the positive electrode tab 41 . A second measuring tab 602 is positioned next to the first power generating element 10 . The second measuring tab 602 is arranged on the side opposite to the first measuring tab 601 with the first power generation element 10 interposed therebetween. The second measurement tab 602 extends in a direction (Y direction) perpendicular to the direction (X direction) in which the connecting tab 30 extends. An end portion 621 of the second measuring tab 602 on the positive electrode tab 41 side is connected to an end portion 43 of the positive electrode tab 41 on the first power generating element 10 side. The second measuring tab 602 is made of the same material as the positive electrode tab 41 . The second measuring tab 602 and the positive electrode tab 41 are integrally constructed from a single metal member. The second measuring tab 602 is made of, for example, aluminum (Al). An end portion 622 of the second measurement tab 602 opposite to the positive electrode tab 41 is exposed to the outside of the sealing film 50 . This end 622 is connected, for example, to a device (eg, a voltmeter) for measuring the characteristics (eg, voltage) of the first power generation element 10 .

第２測定用タブ６０２の正極タブ４１側の端部６２１は、第１フィルム５１と第２フィルム５２の間に配置されている。この端部６２１は、第１フィルム５１と第２フィルム５２に覆われており、封止フィルム５０によって封止されている。第２測定用タブ６０２の正極タブ４１と反対側の端部６２２は、第１フィルム５１と第２フィルム５２に覆われていない。 An end portion 621 of the second measurement tab 602 on the positive electrode tab 41 side is arranged between the first film 51 and the second film 52 . This end portion 621 is covered with the first film 51 and the second film 52 and sealed with the sealing film 50 . An end portion 622 of the second measurement tab 602 opposite to the positive electrode tab 41 is not covered with the first film 51 and the second film 52 .

第３測定用タブ６０３は、負極タブ４２に接続されている。第３測定用タブ６０３は、第２発電要素２０の隣に配置されている。第３測定用タブ６０３は、第２発電要素２０を挟んで第１測定用タブ６０１と反対側に配置されている。第３測定用タブ６０３は、連結タブ３０が延びる方向（Ｘ方向）と直交する方向（Ｙ方向）に延びている。第３測定用タブ６０３の負極タブ４２側の端部６３１が、負極タブ４２の第２発電要素２０側の端部４５に接続されている。第３測定用タブ６０３は、負極タブ４２と同じ材料から構成されている。第３測定用タブ６０３と負極タブ４２は、単一の金属部材から一体的に構成されている。第３測定用タブ６０３は、例えば銅（Ｃｕ）から構成されている。第３測定用タブ６０３の負極タブ４２と反対側の端部６３２は、封止フィルム５０の外側に露出している。この端部６３２は、例えば、第２発電要素２０の特性（例えば電圧）を測定するための機器（例えば電圧計）に接続される。 The third measuring tab 603 is connected to the negative tab 42 . A third measuring tab 603 is arranged next to the second power generating element 20 . The third measuring tab 603 is arranged on the opposite side of the first measuring tab 601 with the second power generating element 20 interposed therebetween. The third measurement tab 603 extends in a direction (Y direction) orthogonal to the direction (X direction) in which the connecting tab 30 extends. An end portion 631 of the third measuring tab 603 on the negative electrode tab 42 side is connected to an end portion 45 of the negative electrode tab 42 on the second power generation element 20 side. The third measuring tab 603 is made of the same material as the negative tab 42 . The third measuring tab 603 and the negative electrode tab 42 are integrally constructed from a single metal member. The third measurement tab 603 is made of copper (Cu), for example. An end portion 632 of the third measurement tab 603 opposite to the negative electrode tab 42 is exposed to the outside of the sealing film 50 . This end 632 is connected, for example, to a device (eg, a voltmeter) for measuring the characteristics (eg, voltage) of the second power generation element 20 .

第３測定用タブ６０３の負極タブ４２側の端部６３１は、第１フィルム５１と第２フィルム５２の間に配置されている。この端部６３１は、第１フィルム５１と第２フィルム５２に覆われており、封止フィルム５０によって封止されている。第３測定用タブ６０３の負極タブ４２と反対側の端部６３２は、第１フィルム５１と第２フィルム５２に覆われていない。 An end portion 631 of the third measuring tab 603 on the side of the negative electrode tab 42 is arranged between the first film 51 and the second film 52 . This end portion 631 is covered with the first film 51 and the second film 52 and sealed with the sealing film 50 . An end portion 632 of the third measuring tab 603 opposite to the negative electrode tab 42 is not covered with the first film 51 and the second film 52 .

第２測定用タブ６０２の端部６２２と、第３測定用タブ６０３の端部６３２とは、封止フィルム５０の複数の辺のうちの第１発電要素１０と第２発電要素２０が並ぶ方向（Ｘ方向）に沿う一辺５４から外側に向かって突出している。第１測定用タブ６０１の端部６２と、第２測定用タブ６０２の端部６２２と、第３測定用タブ６０３の端部６３２とが、同じ側（図１２の上側）に向かって突出している。 The end portion 622 of the second measuring tab 602 and the end portion 632 of the third measuring tab 603 are in the direction in which the first power generating element 10 and the second power generating element 20 of the plurality of sides of the sealing film 50 are aligned. It protrudes outward from one side 54 along the (X direction). The end 62 of the first measuring tab 601, the end 622 of the second measuring tab 602, and the end 632 of the third measuring tab 603 protrude toward the same side (upper side in FIG. 12). there is

（第９実施例）
図１４に示すように、第９実施例に係る電池１は、第３発電要素８０と第４発電要素８２を更に備えている。複数の発電要素は、第１発電要素１０から第４発電要素８２まで直列で接続されている。第２発電要素２０と第３発電要素８０の間の連結タブ３０は、第１発電要素１０と第２発電要素２０の間の連結タブ３０と直交する方向に延びている。発電要素の個数や配列は特に限定されるものではない。 (Ninth embodiment)
As shown in FIG. 14, the battery 1 according to the ninth embodiment further includes a third power generation element 80 and a fourth power generation element 82. As shown in FIG. A plurality of power generation elements are connected in series from the first power generation element 10 to the fourth power generation element 82 . The connection tab 30 between the second power generation element 20 and the third power generation element 80 extends in a direction perpendicular to the connection tab 30 between the first power generation element 10 and the second power generation element 20 . The number and arrangement of power generation elements are not particularly limited.

（その他の実施例）
（１）他の実施例では、図１５に示すように、複数の電池１が積層されていてもよい。積層された複数の電池１が直列で接続されていてもよい。例えば、上側の電池１の正極タブ４１と、下側の電池１の負極タブ４２が接続されていてもよい。 (Other examples)
(1) In another embodiment, as shown in FIG. 15, a plurality of batteries 1 may be stacked. A plurality of stacked batteries 1 may be connected in series. For example, the positive electrode tab 41 of the upper battery 1 and the negative electrode tab 42 of the lower battery 1 may be connected.

（２）上記の実施例では、連結タブ３０が単一の金属部材から構成されていたが、この構成に限定されるものではない。他の実施例では、連結タブ３０が複数の金属部材から構成されていてもよい。図１６に示すように、連結タブ３０が第１金属部材３４と第２金属部材３５を備えていてもよい。連結タブ３０における第１発電要素１０側に第１金属部材３４が配置されており、第２発電要素２０側に第２金属部材３５が配置されている。第１金属部材３４は、例えば銅（Ｃｕ）から構成されている。第２金属部材３５は、例えばアルミニウム（Ａｌ）から構成されている。第１金属部材３４と第２金属部材３５は、例えば溶接によって接合されている。この構成によれば、連結タブ３０の第１発電要素１０側と第２発電要素２０側のそれぞれの構成を、第１発電要素１０と第２発電要素２０のそれぞれに適した構成にすることができる。 (2) In the above embodiment, the connecting tab 30 is composed of a single metal member, but it is not limited to this configuration. In other embodiments, connecting tab 30 may be constructed from multiple metal members. As shown in FIG. 16, connecting tab 30 may comprise first metal member 34 and second metal member 35 . A first metal member 34 is arranged on the first power generation element 10 side of the connecting tab 30 , and a second metal member 35 is arranged on the second power generation element 20 side. The first metal member 34 is made of copper (Cu), for example. The second metal member 35 is made of, for example, aluminum (Al). The first metal member 34 and the second metal member 35 are joined by welding, for example. According to this configuration, the configurations of the first power generation element 10 side and the second power generation element 20 side of the connection tab 30 can be made suitable for the first power generation element 10 and the second power generation element 20, respectively. can.

以上、本発明の具体例を詳細に説明したが、これらは例示に過ぎず、特許請求の範囲を限定するものではない。特許請求の範囲に記載の技術には、以上に例示した具体例を様々に変形、変更したものが含まれる。本明細書又は図面に説明した技術要素は、単独であるいは各種の組合せによって技術的有用性を発揮するものであり、出願時請求項記載の組合せに限定されるものではない。また、本明細書又は図面に例示した技術は複数目的を同時に達成し得るものであり、そのうちの一つの目的を達成すること自体で技術的有用性を持つものである。 Although specific examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or in the drawings exhibit technical utility either singly or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technique illustrated in this specification or drawings can simultaneously achieve a plurality of purposes, and achieving one of them has technical utility in itself.

１：電池、１０：第１発電要素、１１：正極板、１２：負極板、１３：セパレータ、２０：第２発電要素、２１：正極板、２２：負極板、２３：セパレータ、３０：連結タブ、４１：正極タブ、４２：負極タブ、５０：封止フィルム、５１：第１フィルム、５２：第２フィルム、５３：接着部、５５：第１開口部、５７：第２開口部、６０：測定用タブ、７０：放熱板、７３：本体部、７４：突出部、８０：第３発電要素、８２：第４発電要素、９０：封止テープ
1: Battery, 10: First Power Generation Element, 11: Positive Plate, 12: Negative Plate, 13: Separator, 20: Second Power Generation Element, 21: Positive Plate, 22: Negative Plate, 23: Separator, 30: Connection Tab , 41: positive electrode tab, 42: negative electrode tab, 50: sealing film, 51: first film, 52: second film, 53: adhesive portion, 55: first opening, 57: second opening, 60: Measurement tab, 70: heat sink, 73: main body, 74: protrusion, 80: third power generation element, 82: fourth power generation element, 90: sealing tape

Claims (7)

正極板と負極板が積層されている第１発電要素と、
前記第１発電要素の隣に配置されており、正極板と負極板が積層されている第２発電要素と、
前記第１発電要素と前記第２発電要素の間に配置されており、前記第１発電要素と前記第２発電要素に電気的に接続されている連結タブと、
前記第１発電要素と前記第２発電要素の間に配置されており、前記連結タブに電気的に接続されている測定用タブと、
前記第１発電要素と前記第２発電要素と前記連結タブと前記測定用タブを封止している封止フィルムとを備えており、
前記測定用タブの一端部が前記封止フィルムの内側で前記連結タブに接続されており、前記測定用タブの他端部が前記封止フィルムの外側に露出している、電池。 a first power generation element in which a positive electrode plate and a negative electrode plate are laminated;
a second power generation element arranged next to the first power generation element and having a positive electrode plate and a negative electrode plate laminated;
a connecting tab disposed between the first power generating element and the second power generating element and electrically connected to the first power generating element and the second power generating element;
a measuring tab disposed between the first power generating element and the second power generating element and electrically connected to the connecting tab;
A sealing film sealing the first power generation element, the second power generation element, the connection tab, and the measurement tab,
A battery, wherein one end of the measurement tab is connected to the connection tab inside the sealing film, and the other end of the measurement tab is exposed outside the sealing film. 請求項１に記載の電池であって、
前記封止フィルムは、前記測定用タブの前記他端部を前記封止フィルムの外側に露出させるための第１開口部を備えている、電池。 A battery according to claim 1,
The battery, wherein the sealing film has a first opening for exposing the other end of the measurement tab to the outside of the sealing film. 請求項１又は２に記載の電池であって、
前記連結タブと前記封止フィルムが前記第１発電要素と前記第２発電要素の間で折り曲げられることによって前記第１発電要素と前記第２発電要素が積層されており、
積層された前記第１発電要素と前記第２発電要素の間に放熱板が配置されている、電池。 The battery according to claim 1 or 2,
The first power generating element and the second power generating element are laminated by bending the connecting tab and the sealing film between the first power generating element and the second power generating element,
A battery, wherein a radiator plate is arranged between the stacked first power generation element and the second power generation element. 請求項３に記載の電池であって、
前記封止フィルムは、前記第１発電要素と前記第２発電要素の間において前記放熱板の一部が挿入される第２開口部を備えている、電池。 A battery according to claim 3,
The battery, wherein the sealing film has a second opening into which a part of the heat sink is inserted between the first power generating element and the second power generating element. 請求項１から４のいずれか一項に記載の電池であって、
前記連結タブは、単一の金属部材から構成されている、電池。 The battery according to any one of claims 1 to 4,
The battery, wherein the connecting tab is composed of a single metal member. 請求項１から４のいずれか一項に記載の電池であって、
前記連結タブは、前記第１発電要素側の第１金属部材と、前記第２発電要素側の第２金属部材とから構成されている、電池。 The battery according to any one of claims 1 to 4,
The battery according to claim 1, wherein the connecting tab is composed of a first metal member on the side of the first power generation element and a second metal member on the side of the second power generation element. 請求項１から６のいずれか一項に記載の電池であって、
前記封止フィルムの周縁部を封止する封止テープを更に備えている、電池。
The battery according to any one of claims 1 to 6,
A battery, further comprising a sealing tape that seals the periphery of the sealing film.
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