WO2018220924A1 - Secondary cell module - Google Patents

Secondary cell module Download PDF

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Publication number
WO2018220924A1
WO2018220924A1 PCT/JP2018/007455 JP2018007455W WO2018220924A1 WO 2018220924 A1 WO2018220924 A1 WO 2018220924A1 JP 2018007455 W JP2018007455 W JP 2018007455W WO 2018220924 A1 WO2018220924 A1 WO 2018220924A1
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WO
WIPO (PCT)
Prior art keywords
secondary battery
bus bar
module
battery module
positive electrode
Prior art date
Application number
PCT/JP2018/007455
Other languages
French (fr)
Japanese (ja)
Inventor
藤本　貴行
啓 坂部
Original Assignee
株式会社日立製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to KR1020197030541A priority Critical patent/KR20190122866A/en
Publication of WO2018220924A1 publication Critical patent/WO2018220924A1/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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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 secondary battery module.
  • Patent Document 1 discloses a battery module in which a plurality of assembled batteries 3000 are stacked, and the assembled battery 3000 adjacent in the stacking direction is connected to the first connection terminal 21a of one assembled battery.
  • the second connection terminal 22a of the other assembled battery is fitted and connected in series, and the first connection terminal 21a of one assembled battery is embedded in the case 30 of the other assembled battery.
  • adjacent unit cells 3 are connected to each other at both ends of an assembled battery, which are connected using a convex terminal 4 of one unit cell 3 and a concave terminal 5 of the other unit cell 3. It is disclosed that the battery 3 has only one of the convex terminal 4 and the concave terminal 5 as a positive terminal or a negative terminal, and the other terminal is an external terminal.
  • Patent Document 1 the first connection terminal 21a of one assembled battery and the second connection terminal 22a of the other assembled battery are fitted to each other and connected in series, and the first connection terminal of one assembled battery Since 21a is embedded in the case 30 of the other assembled battery, the portion where the first connection terminal 21a and the second connection terminal 22a are formed does not contribute to the energy density of the secondary battery module, There is a possibility that the energy density of the secondary battery module is lowered.
  • patent document 2 since the convex terminal 4 and the concave terminal 5 are formed in the center part of the cell 3 side surface, the concave terminal 5 for connecting the convex terminal 4 is the energy density of a secondary battery module. There is a possibility that the energy density of the secondary battery module will be reduced.
  • the present invention aims to improve the energy density of the secondary battery module.
  • a secondary battery module having a plurality of secondary batteries having electrode terminals, the secondary battery module having a first module bus bar and a second module bus bar for electrically connecting to an adjacent secondary battery module
  • the first module bus bar and the second module bus bar are formed in the same plane as the surface on which the electrode terminals are formed, the first module bus bar protrudes from the secondary battery module, and the second module bus bar is the secondary battery module.
  • Secondary battery module formed inside.
  • the energy density of the secondary battery module can be improved. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.
  • 1 is a secondary battery module according to an embodiment of the present invention.
  • 1 is a secondary battery module according to an embodiment of the present invention.
  • 1 is a secondary battery module according to an embodiment of the present invention.
  • 1 is a secondary battery according to an embodiment of the present invention. It is an assembled battery which concerns on one Embodiment of this invention.
  • 1 is a secondary battery module according to an embodiment of the present invention.
  • 1 is a secondary battery module according to an embodiment of the present invention.
  • It is an assembled battery which concerns on one Embodiment of this invention.
  • the secondary battery module 2000 includes a plurality of secondary batteries 1000, a plurality of cell bus bars 500, two end plates 2100, two side plates 2200, a circuit board 2300, a first module bus bar 2400, and a second module bus bar 2450.
  • the direction in which the end plate 2100 is disposed with respect to the plurality of secondary batteries 1000 is the x-axis direction
  • the direction in which the side plate 2200 is disposed with respect to the plurality of secondary batteries 1000 is the y-axis direction
  • the perpendicular to the xy plane The direction is the z-axis direction.
  • the plurality of secondary batteries 1000 are secured by end plates 2100 arranged on both sides in the x-axis direction of the plurality of secondary batteries 1000.
  • the end plate 2100 is preferably larger than the secondary battery 1000 in the yz plane and formed over the entire surface of the secondary battery 1000 so that the plurality of secondary batteries 1000 can be securely secured.
  • the end plate 2100 has a space through which the first module bus bar 2400 can pass.
  • an end plate opening 2110 is formed in the end plate 2100.
  • the end plate opening 2110 is larger than the first module bus bar 2400, and the end plate opening 2110 is large enough to allow the first module bus bar 2400 to penetrate the end plate 2100.
  • End plate 2100 is made of a steel material such as stainless steel, a material such as iron or aluminum.
  • the two end plates 2100 are held by the side plates 2200 disposed on both sides in the y-axis direction of the plurality of secondary batteries 1000.
  • the side plates 2200 are screwed to the two end plates 2100, so that the two end plates 2100 are held by the side plates 2200. Since the direction of screwing the side plate 2200 and the end plate 2100 is the same as the direction of securing the plurality of secondary batteries 1000 by the end plate 2100, the rigidity of the secondary battery module 2000 can be increased. In addition, since the thickness of the side plate 2200 and the thickness of the end plate 2100 can be made substantially the same, the rigidity of the secondary battery module 2000 can be increased.
  • Side plate 2200 is made of a steel material such as stainless steel, or a material such as iron or aluminum.
  • Side plate fixing portion 2210 is provided on side plate 2200.
  • the secondary battery module 2000 is fixed to the vehicle body by screwing the side plate fixing portion 2210 to the vehicle body.
  • Side plate openings 2220 are provided in the y-axis direction of the side plate 2200.
  • the side plate opening 2220 can prevent interference between the chip and the side plate 2200 when a chip protruding from the circuit board 2300 is arranged.
  • the circuit board 2300 is formed between the side plate 2200 and the secondary battery 1000 in the y-axis direction.
  • a circuit board 2300 is provided with a converter device, an inverter device, a resistor, and the like. By forming the circuit board 2300 between the side plate 2200 and the secondary battery 1000 in the y-axis direction, the secondary battery module 2000 can be made compact.
  • Circuit board recesses 2310 are formed at both ends of the circuit board 2300 in the x-axis direction.
  • the circuit board recess 2310 prevents interference between the first module bus bar 2400 and the circuit board 2300.
  • the circuit board recess 2310 is formed at both ends of the circuit board 2300, but the circuit board recess 2310 may be formed only at one end of the circuit board 2300.
  • FIG. 3 shows a secondary battery module according to an embodiment of the present invention.
  • a cell bus bar 500 is formed on the y-axis direction side of the secondary battery 1000.
  • a first module bus bar 2400 and a second module bus bar 2450 are formed at both ends of the secondary battery module 2000 in the x-axis direction.
  • the first module bus bar 2400 protrudes from the end plate 2100 in the x-axis direction, and the second module bus bar 2450 is formed in the end plate 2100 in the x-axis direction.
  • the adjacent secondary battery modules 2000 are electrically connected in series.
  • the cell bus bar 500, the first module bus bar 2400, and the second module bus bar 2450 are formed on the same plane. Thereby, the useless space in the secondary battery module 2000 is reduced, and the energy density of the secondary battery module 2000 can be improved.
  • the first module bus bar 2400 and the second module bus bar 2450 are made of a material having a relatively good electrical conductivity such as copper or aluminum.
  • the first module bus bar 2400 protrudes compared to the cell bus bar 500.
  • the first module bus bar 2400 may be formed on the same plane as the cell bus bar 500.
  • the second module bus bar 2450 may be eliminated, the first module bus bar 2400 may be connected to the cell bus bar 500, and the adjacent secondary battery modules 2000 may be electrically connected in series.
  • the cell bus bar 500 formed at the end in the x-axis direction becomes the second module bus bar 2450.
  • the electrode terminals in the secondary battery 1000 are formed at both ends of the secondary battery 1000 in the z-axis direction, and the cell bus bar 500 is also formed at both ends of the secondary battery 1000 in the z-axis direction in accordance with the positions where the electrode terminals are formed. .
  • the first module bus bar 2400 is formed between the cell bus bars 500 between the screws for screwing the side plate 2200 and the end plate 2100 in the z-axis.
  • the second module bus bar 2450 is formed on the cell bus bar 500 in the z-axis.
  • the cell bus bar 500 may be arranged so as to be biased in one direction in the z-axis direction.
  • the cell bus bar 500 is electrically connected to the electrode terminals.
  • the cell bus bar 500 electrically connects a plurality of secondary batteries 1000.
  • the material of the cell bus bar 500 is selected from aluminum, aluminum alloy, copper, copper alloy and the like.
  • the secondary battery 1000 includes a positive electrode 100, a negative electrode 200, a positive electrode terminal 150, a negative electrode terminal 250, a separator 300, and an outer package.
  • the direction in which the positive electrode 100, the negative electrode 200, and the separator 300 are stacked is the x-axis direction, and the vertical direction in the stacking direction is the yz plane direction.
  • the positive electrode 100 or the negative electrode 200 is an electrode
  • the positive electrode mixture layer 110 or the negative electrode mixture layer 210 is an electrode mixture layer
  • the positive electrode current collector 120 or the negative electrode current collector 220 is an electrode current collector
  • the tab 230 may be referred to as an electrode tab
  • the positive electrode terminal 150 or the negative electrode terminal 250 may be referred to as an electrode terminal.
  • the positive electrode 100, the separator 300, and the negative electrode 200 are laminated
  • the secondary battery 1000 is configured by laminating a plurality of electrode bodies 400. By connecting the positive electrode tabs 130 to each other and the negative electrode tab 230, an electrical parallel connection is configured in the secondary battery 1000.
  • the secondary battery 1000 in FIG. 4 is a stacked secondary battery, but a wound cylindrical secondary battery or a wound square secondary battery may be applied.
  • the positive electrode 100 includes a positive electrode mixture layer 110, a positive electrode current collector 120, and a positive electrode tab 130.
  • a positive electrode mixture layer 110 is formed on both surfaces of the positive electrode current collector 120.
  • the positive electrode mixture layer 110 contains at least a positive electrode active material capable of inserting and extracting Li.
  • the positive electrode active material include LiCo-based oxides, LiNi-based composite oxides, LiMn-based composite oxides, Li-Co-Ni-Mn composite oxides, LiFeP-based oxides, and the like.
  • a conductive material responsible for electronic conductivity in the positive electrode mixture layer 110, a binder that ensures adhesion between the materials in the positive electrode mixture layer 110, and further in the positive electrode mixture layer 110 A solid electrolyte for ensuring ionic conductivity may be included.
  • a material contained in the positive electrode mixture layer 110 is dissolved in a solvent to form a slurry, which is applied onto the positive electrode current collector 120.
  • the coating method is not particularly limited, and for example, a conventional method such as a doctor blade method, a dipping method, or a spray method can be used. Thereafter, the positive electrode mixture layer 110 is formed through a drying process for removing the solvent and a pressing process for ensuring the electron conductivity and ion conductivity in the positive electrode mixture layer 110.
  • ⁇ Positive electrode current collector 120, positive electrode tab 130> The positive electrode current collector 120 is electrically connected to the positive electrode tab 130.
  • the positive electrode tab 130 is led out of the electrode body 400.
  • the positive electrode mixture layer 110 is not formed on the positive electrode tab 130.
  • the positive electrode mixture layer 110 may be formed on the positive electrode tab 130 as long as the battery performance is not adversely affected.
  • an aluminum foil, an aluminum perforated foil having a hole diameter of 0.1 to 10 mm, an expanded metal, an aluminum foam plate, or the like is used for the positive electrode current collector 120 and the positive electrode tab 130.
  • an aluminum foil, an aluminum perforated foil having a hole diameter of 0.1 to 10 mm, an expanded metal, an aluminum foam plate, or the like is used for the positive electrode current collector 120 and the positive electrode tab 130 .
  • the thicknesses of the positive electrode current collector 120 and the positive electrode tab 130 are preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the secondary battery 1000 and the mechanical strength of the electrode, about 1 to 100 ⁇ m is desirable.
  • Negative electrode 200 It has a negative electrode 200, a negative electrode mixture layer 210, a negative electrode current collector 220, and a negative electrode tab 230. Negative electrode mixture layers 210 are formed on both surfaces of the negative electrode current collector 220.
  • the negative electrode mixture layer 210 contains at least a positive electrode active material capable of inserting and extracting Li.
  • the negative electrode active material include carbon-based materials such as natural graphite, soft carbon, and amorphous carbon, Si metal, Si alloy, lithium titanate, and lithium metal.
  • a conductive material responsible for electronic conductivity in the negative electrode mixture layer 210, a binder that ensures adhesion between the materials in the negative electrode mixture layer 210, and further in the negative electrode mixture layer 210 A solid electrolyte for ensuring ionic conductivity may be included.
  • the material contained in the negative electrode mixture layer 210 is dissolved in a solvent to form a slurry, which is applied onto the negative electrode current collector 220.
  • the coating method is not particularly limited, and for example, a conventional method such as a doctor blade method, a dipping method, or a spray method can be used.
  • the negative mix layer 210 is formed through the drying process for removing a solvent, and the press process for ensuring the electron conductivity in the negative mix layer 210, and ion conductivity.
  • Negative electrode current collector 220, negative electrode tab 230 The configurations of the negative electrode current collector 220 and the negative electrode tab 230 are substantially the same as the configurations of the positive electrode current collector 120 and the positive electrode tab 130.
  • the negative electrode current collector 220 and the negative electrode tab 230 copper foil, copper perforated foil having a hole diameter of 0.1 to 10 mm, expanded metal, foamed copper plate, etc. are used. Is also applicable.
  • the thickness of the negative electrode current collector 220 and the negative electrode tab 230 is preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the secondary battery 1000 and the mechanical strength of the electrode, about 1 to 100 ⁇ m is desirable.
  • Separator 300 is formed between positive electrode 100 and negative electrode 200, and when secondary battery 1000 is a lithium ion secondary battery, it allows lithium ions to pass therethrough and prevents short circuit between positive electrode 100 and negative electrode 200.
  • a material constituting the separator 300 a microporous film, a solid electrolyte, or the like can be used.
  • microporous film polyolefin such as polyethylene or polypropylene, glass fiber, or the like can be used.
  • electrolyte solution is injected into the secondary battery 1000 from the vacant side or the injection hole of the exterior body that houses the plurality of electrode bodies 400. Is filled with an electrolyte solution.
  • the electrolytic solution includes, for example, a solvent and a lithium salt, and serves as a medium for transmitting lithium ions between the positive electrode 100 and the negative electrode 200.
  • ethylene carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), propylene carbonate, butylene carbonate, ⁇ -butyrolactone, phosphate triester, trimethoxymethane, dioxolane, diethyl ether, sulfolane, etc. as the solvent. Can do. These materials may be used alone or in combination.
  • lithium salt LiPF 6, LiBF 4, LiClO 4, LiCF 3 SO 3, LiCF 3 CO 2, LiAsF 6, LiSbF 6, lithium bis oxalate borate (LiBOB), lithium imide salt (e.g., lithium bis (Fluorosulfonyl) imide, LiFSI) and the like can be preferably used. These lithium salts may be used alone or in combination.
  • the solid electrolyte Li 10 Ge 2 PS 12, Li 2 S-P 2 S 5 sulfide such as oxide-based, such as Li-La-Zr-O, the organic polymer Ya an ion liquid or ambient temperature molten salt
  • a semi-solid electrolyte supported on inorganic particles or the like, a gel electrolyte using a polymer gel as an electrolyte, or the like can be used.
  • the solid electrolyte serves as a medium for transmitting lithium ions between the positive electrode 100 and the negative electrode 200, and the above-described electrolytic solution is basically unnecessary. You can configure the connection.
  • an electrolytic solution may be added to the secondary battery 1000 even when a solid electrolyte is used as the separator 300 as long as an electrical short circuit in the secondary battery 1000 can be prevented.
  • the separator 300 may be formed between the positive electrode 100 and the negative electrode 200 as a sheet, or may be formed by coating on the electrode mixture layer.
  • the separator 300 may be formed on both surfaces of the electrode mixture layer, and if the separator 300 is formed between the positive electrode 100 and the negative electrode 200, the separator 300 may be formed on one surface of the electrode mixture layer.
  • the thickness of the separator 300 is several nanometers to several millimeters from the viewpoint of ensuring the energy density of the secondary battery 1000 and ensuring electronic insulation.
  • the positive terminal 150 and the negative terminal 250 are electrically connected to the electrode tab.
  • metals such as aluminum, copper, nickel, and stainless steel can be used.
  • the exterior body 700 houses the electrodes, the separator 300, and the electrode terminals. In order to electrically connect the electrode terminal to the cell bus bar 500, an opening is formed in the exterior body 700 so as to expose the electrode terminal on the surface of the exterior body where the electrode terminal is formed.
  • the material of the exterior body 700 is selected from materials that are corrosion resistant to the electrolyte, such as aluminum, stainless steel, and nickel-plated steel.
  • FIG. 6 shows an assembled battery according to an embodiment of the present invention.
  • the assembled battery 3000 includes a plurality of secondary battery modules 2000, and the adjacent secondary battery modules 2000 are the first module bus bar 2400 in one secondary battery module 2000 and the second in the other secondary battery module 2000.
  • the module bus bar 2450 is electrically connected in series.
  • FIG. 7 shows a secondary battery module according to an embodiment of the present invention.
  • the secondary battery 1000 is a bipolar secondary battery.
  • the bipolar secondary battery refers to a secondary battery in which an electrical series connection is configured in the secondary battery 1000.
  • the first module bus bar 2400 and the second module bus bar 2450 are connected to a plurality of secondary batteries 1000 in the secondary battery module 2000.
  • one electrode terminal of the plurality of secondary batteries 1000 is connected to the first module bus bar 2400, and the other electrode terminal is connected to the second module bus bar 2450.
  • the some secondary battery 1000 is electrically connected in parallel.
  • the secondary battery module 2000 can be made compact, and the energy density of the secondary battery module 2000 can be improved.
  • FIGS. 8 and 9 are schematic views of a secondary battery module according to an embodiment of the present invention.
  • a recess provided in the y-axis direction is used as an end plate opening 2110, and a space that allows the first module bus bar 2400 to penetrate in the y-axis direction of the end plate 2100 is formed.
  • a step is formed at the y-axis direction end of the side plate 2200, and a step is also formed at the x-axis direction end of the side plate 2200 in accordance with the step of the side plate 2200. Screwed in the y-axis direction at the stepped portion of the side plate 2200 and the stepped portion of the side plate 2200.
  • Cell bus bar 500 is arranged in a space formed between side plate 2200 and secondary battery 1000 in the y-axis direction.
  • the end plate 2100 can be made thinner.
  • the energy density of the secondary battery module 2000 can be improved.
  • two upper and lower side plates 2200 are formed, and circuit boards can be arranged on the two side plates 2200.
  • FIG. 10 shows an assembled battery according to an embodiment of the present invention.
  • the assembled battery 3000 has a pair of side plates 2200.
  • the end plate 2100 is not formed, and the end plate 2100 is formed only at both ends of the assembled battery 3000. Thereby, the assembled battery 3000 can be made compact and lightweight.
  • the side plate 2200 is not formed, and the two side plates 2200 are vertically arranged in the z-axis direction. Thereby, the assembled battery 3000 can be made lightweight.
  • the side plate 2200 may be formed in units of the secondary battery module 2000.

Abstract

The present invention provides a secondary cell module (2000) that has a plurality of secondary cells (1000) having an electrode terminal, wherein the secondary cell module (2000) has a first module bus bar (2400) and a second module bus bar (2450) for electrically connecting to adjacent secondary cell modules. The first module bus bar (2400) and the second module bus bar (2450) are formed in the same plane as the surface on which the electrode terminals are formed. The first module bus bar (2400) projects from the secondary cell module (2000), and the second module bus bar (2450) is formed inside the secondary cell module (2000).

Description

二次電池モジュールSecondary battery module
本発明は、二次電池モジュールに関する。 The present invention relates to a secondary battery module.
　二次電池モジュールに関する技術として、特許文献１には複数の組電池３０００が積層された電池モジュールであって、積層方向に隣接する組電池３０００は、一方の組電池の第１の接続端子２１ａと、他方の組電池の第２の接続端子２２ａが、互いに嵌合して直列接続し、一方の組電池の第１の接続端子２１ａは、他方の組電池のケース３０内に埋設している、旨が開示されている。また、特許文献２には、隣接する単電池３同士は、一方の単電池３の凸状端子４と他方の単電池３の凹状端子５とを用いて接続される、組電池の両端の単電池３は、凸状端子４及び凹状端子５の一方のみを正極端子又は負極端子として有しており、他方の端子は外部端子となっている、旨が開示されている。 As a technique related to the secondary battery module, Patent Document 1 discloses a battery module in which a plurality of assembled batteries 3000 are stacked, and the assembled battery 3000 adjacent in the stacking direction is connected to the first connection terminal 21a of one assembled battery. The second connection terminal 22a of the other assembled battery is fitted and connected in series, and the first connection terminal 21a of one assembled battery is embedded in the case 30 of the other assembled battery. The effect is disclosed. Further, in Patent Document 2, adjacent unit cells 3 are connected to each other at both ends of an assembled battery, which are connected using a convex terminal 4 of one unit cell 3 and a concave terminal 5 of the other unit cell 3. It is disclosed that the battery 3 has only one of the convex terminal 4 and the concave terminal 5 as a positive terminal or a negative terminal, and the other terminal is an external terminal.
ＷＯ１２／１０１７２８号公報WO12 / 101728 publication 特開２０１２－２５２９２４号公報JP 2012-252924 A
　特許文献１では、一方の組電池の第１の接続端子２１ａと、他方の組電池の第２の接続端子２２ａが、互いに嵌合して直列接続し、一方の組電池の第１の接続端子２１ａは、他方の組電池のケース３０内に埋設しているため、第１の接続端子２１ａおよび第２の接続端子２２ａが形成されている部分は二次電池モジュールのエネルギー密度に寄与せず、二次電池モジュールのエネルギー密度の低下を招く可能性がある。また、特許文献２では、凸状端子４および凹状端子５が単電池３側面の中央部に形成されているため、凸状端子４を接続するための凹状端子５が二次電池モジュールのエネルギー密度に寄与せず、二次電池モジュールのエネルギー密度の低下を招く可能性がある。 In Patent Document 1, the first connection terminal 21a of one assembled battery and the second connection terminal 22a of the other assembled battery are fitted to each other and connected in series, and the first connection terminal of one assembled battery Since 21a is embedded in the case 30 of the other assembled battery, the portion where the first connection terminal 21a and the second connection terminal 22a are formed does not contribute to the energy density of the secondary battery module, There is a possibility that the energy density of the secondary battery module is lowered. Moreover, in patent document 2, since the convex terminal 4 and the concave terminal 5 are formed in the center part of the cell 3 side surface, the concave terminal 5 for connecting the convex terminal 4 is the energy density of a secondary battery module. There is a possibility that the energy density of the secondary battery module will be reduced.
　本発明は、二次電池モジュールのエネルギー密度を向上させることを目的とする。 The present invention aims to improve the energy density of the secondary battery module.
　上記課題を解決するための本発明の特徴は、例えば以下の通りである。 The features of the present invention for solving the above problems are as follows, for example.
　電極端子を有する二次電池を複数有する二次電池モジュールであって、二次電池モジュールは、隣接する二次電池モジュールに電気的に接続するための第一モジュールバスバおよび第二モジュールバスバを有し第一モジュールバスバおよび第二モジュールバスバは、電極端子が形成された面と同一平面に形成され、第一モジュールバスバは、二次電池モジュールから突出しており、第二モジュールバスバは、二次電池モジュール内に形成されている二次電池モジュール。 A secondary battery module having a plurality of secondary batteries having electrode terminals, the secondary battery module having a first module bus bar and a second module bus bar for electrically connecting to an adjacent secondary battery module The first module bus bar and the second module bus bar are formed in the same plane as the surface on which the electrode terminals are formed, the first module bus bar protrudes from the secondary battery module, and the second module bus bar is the secondary battery module. Secondary battery module formed inside.
　本発明により、二次電池モジュールのエネルギー密度を向上できる。上記した以外の課題、構成及び効果は以下の実施形態の説明により明らかにされる。 According to the present invention, the energy density of the secondary battery module can be improved. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.
本発明の一実施形態に係る二次電池モジュールである。1 is a secondary battery module according to an embodiment of the present invention. 本発明の一実施形態に係る二次電池モジュールである。1 is a secondary battery module according to an embodiment of the present invention. 本発明の一実施形態に係る二次電池モジュールである。1 is a secondary battery module according to an embodiment of the present invention. 本発明の一実施形態に係る二次電池である。1 is a secondary battery according to an embodiment of the present invention. 本発明の一実施形態に係る二次電池である。1 is a secondary battery according to an embodiment of the present invention. 本発明の一実施形態に係る組電池である。It is an assembled battery which concerns on one Embodiment of this invention. 本発明の一実施形態に係る二次電池モジュールである。1 is a secondary battery module according to an embodiment of the present invention. 本発明の一実施形態に係る二次電池モジュールである。1 is a secondary battery module according to an embodiment of the present invention. 本発明の一実施形態に係る二次電池モジュールである。1 is a secondary battery module according to an embodiment of the present invention. 本発明の一実施形態に係る組電池である。It is an assembled battery which concerns on one Embodiment of this invention.
　以下、図面等を用いて、本発明の実施形態について説明する。以下の説明は本発明の内容の具体例を示すものであり、本発明がこれらの説明に限定されるものではなく、本明細書に開示される技術的思想の範囲内において当業者による様々な変更および修正が可能である。また、本発明を説明するための全図において、同一の機能を有するものは、同一の符号を付け、その繰り返しの説明は省略する場合がある。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description shows specific examples of the contents of the present invention, and the present invention is not limited to these descriptions. Various modifications by those skilled in the art are within the scope of the technical idea disclosed in this specification. Changes and modifications are possible. In all the drawings for explaining the present invention, components having the same function are denoted by the same reference numerals, and repeated description thereof may be omitted.
　図１、図２は、本発明の一実施形態に係る二次電池モジュールの模式図である。二次電池モジュール２０００は、複数の二次電池１０００、複数のセルバスバ５００、二つのエンドプレート２１００、二つのサイドプレート２２００、回路基板２３００、第一モジュールバスバ２４００、第二モジュールバスバ２４５０を有する。複数の二次電池１０００に対してエンドプレート２１００が配置されている方向をｘ軸方向、複数の二次電池１０００に対してサイドプレート２２００が配置されている方向をｙ軸方向、ｘｙ平面の垂線方向をｚ軸方向とする。 1 and 2 are schematic views of a secondary battery module according to an embodiment of the present invention. The secondary battery module 2000 includes a plurality of secondary batteries 1000, a plurality of cell bus bars 500, two end plates 2100, two side plates 2200, a circuit board 2300, a first module bus bar 2400, and a second module bus bar 2450. The direction in which the end plate 2100 is disposed with respect to the plurality of secondary batteries 1000 is the x-axis direction, the direction in which the side plate 2200 is disposed with respect to the plurality of secondary batteries 1000 is the y-axis direction, and the perpendicular to the xy plane The direction is the z-axis direction.
　複数の二次電池１０００のｘ軸方向両側に配置されたエンドプレート２１００によって
、複数の二次電池１０００は固縛されている。複数の二次電池１０００を確実に固縛できるように、ｙｚ平面においてエンドプレート２１００は二次電池１０００よりも大きく、二次電池１０００の全面にわたって形成することが望ましい。 The plurality of secondary batteries 1000 are secured by end plates 2100 arranged on both sides in the x-axis direction of the plurality of secondary batteries 1000. The end plate 2100 is preferably larger than the secondary battery 1000 in the yz plane and formed over the entire surface of the secondary battery 1000 so that the plurality of secondary batteries 1000 can be securely secured.
　エンドプレート２１００には、第一モジュールバスバ２４００が貫通できる空間が形成されている。本実施例では、エンドプレート２１００にエンドプレート開口部２１１０が形成されている。ｙｚ平面において、エンドプレート開口部２１１０は第一モジュールバスバ２４００より大きくなっており、エンドプレート開口部２１１０は、第一モジュールバスバ２４００がエンドプレート２１００を貫通できる程度の大きさになっている。エンドプレート２１００は、ステンレスなどの鋼材、鉄、アルミなどの材料で作製される。 The end plate 2100 has a space through which the first module bus bar 2400 can pass. In this embodiment, an end plate opening 2110 is formed in the end plate 2100. In the yz plane, the end plate opening 2110 is larger than the first module bus bar 2400, and the end plate opening 2110 is large enough to allow the first module bus bar 2400 to penetrate the end plate 2100. End plate 2100 is made of a steel material such as stainless steel, a material such as iron or aluminum.
　複数の二次電池１０００のｙ軸方向両側に配置されたサイドプレート２２００によって
、二つのエンドプレート２１００は保持される。例えば、サイドプレート２２００が二つのエンドプレート２１００にネジ止めされることで、二つのエンドプレート２１００はサイドプレート２２００に保持される。サイドプレート２２００とエンドプレート２１００とのネジ止めの方向がエンドプレート２１００による複数の二次電池１０００の固縛の方向と同じになっているため、二次電池モジュール２０００の剛性を高められる。また、サイドプレート２２００の厚さとエンドプレート２１００の厚さをほぼ同じにできるので、二次電池モジュール２０００の剛性を高められる。サイドプレート２２００は、ステンレスなどの鋼材、鉄、アルミなどの材料で作製される。 The two end plates 2100 are held by the side plates 2200 disposed on both sides in the y-axis direction of the plurality of secondary batteries 1000. For example, the side plates 2200 are screwed to the two end plates 2100, so that the two end plates 2100 are held by the side plates 2200. Since the direction of screwing the side plate 2200 and the end plate 2100 is the same as the direction of securing the plurality of secondary batteries 1000 by the end plate 2100, the rigidity of the secondary battery module 2000 can be increased. In addition, since the thickness of the side plate 2200 and the thickness of the end plate 2100 can be made substantially the same, the rigidity of the secondary battery module 2000 can be increased. Side plate 2200 is made of a steel material such as stainless steel, or a material such as iron or aluminum.
　サイドプレート２２００には、サイドプレート固定部２２１０が設けられている。二次電池モジュール２０００を車体に用いる場合、サイドプレート固定部２２１０が車体にネジ止めされることで、二次電池モジュール２０００が車体に固定される。サイドプレート２２００のｙ軸方向には、サイドプレート開口部２２２０が設けられている。サイドプレート開口部２２２０により、回路基板２３００で飛び出ているチップが配置されている場合に、チップとサイドプレート２２００との干渉を防止できる。　
　回路基板２３００は、ｙ軸方向においてサイドプレート２２００および二次電池１０００の間に形成されている。回路基板２３００には、コンバータ装置、インバータ装置、抵抗器などが配置される。ｙ軸方向において、回路基板２３００をサイドプレート２２００および二次電池１０００の間に形成することで、二次電池モジュール２０００をコンパクトにできる。 Side plate fixing portion 2210 is provided on side plate 2200. When the secondary battery module 2000 is used for a vehicle body, the secondary battery module 2000 is fixed to the vehicle body by screwing the side plate fixing portion 2210 to the vehicle body. Side plate openings 2220 are provided in the y-axis direction of the side plate 2200. The side plate opening 2220 can prevent interference between the chip and the side plate 2200 when a chip protruding from the circuit board 2300 is arranged.
The circuit board 2300 is formed between the side plate 2200 and the secondary battery 1000 in the y-axis direction. A circuit board 2300 is provided with a converter device, an inverter device, a resistor, and the like. By forming the circuit board 2300 between the side plate 2200 and the secondary battery 1000 in the y-axis direction, the secondary battery module 2000 can be made compact.
　ｘ軸方向における回路基板２３００の両端部には、回路基板凹み２３１０が形成されている。回路基板凹み２３１０により、第一モジュールバスバ２４００と回路基板２３００との干渉を防止している。図２では、回路基板２３００の両端部に回路基板凹み２３１０が形成されているが、回路基板２３００の片端部のみに回路基板凹み２３１０が形成されていてもよい。 Circuit board recesses 2310 are formed at both ends of the circuit board 2300 in the x-axis direction. The circuit board recess 2310 prevents interference between the first module bus bar 2400 and the circuit board 2300. In FIG. 2, the circuit board recess 2310 is formed at both ends of the circuit board 2300, but the circuit board recess 2310 may be formed only at one end of the circuit board 2300.
　図３は、本発明の一実施形態に係る二次電池モジュールである。隣接する二次電池１０００を電気的に直列に接続するために、二次電池１０００のｙ軸方向側にはセルバスバ５００が形成されている。二次電池モジュール２０００のｘ軸方向両端には第一モジュールバスバ２４００および第二モジュールバスバ２４５０が形成されている。 FIG. 3 shows a secondary battery module according to an embodiment of the present invention. In order to electrically connect adjacent secondary batteries 1000 in series, a cell bus bar 500 is formed on the y-axis direction side of the secondary battery 1000. A first module bus bar 2400 and a second module bus bar 2450 are formed at both ends of the secondary battery module 2000 in the x-axis direction.
　第一モジュールバスバ２４００はｘ軸方向においてエンドプレート２１００より突出しており、第二モジュールバスバ２４５０はｘ軸方向においてエンドプレート２１００内に形成されている。隣接する二次電池モジュール２０００において、一方の第一モジュールバスバ２４００と他方の第二モジュールバスバ２４５０が接続されることにより、隣接する二次電池モジュール２０００は電気的に直列に接続される。セルバスバ５００、第一モジュールバスバ２４００、および第二モジュールバスバ２４５０が同一平面に形成されている。これにより、二次電池モジュール２０００内の無駄なスペースが削減され、二次電池モジュール２０００のエネルギー密度を向上できる。第一モジュールバスバ２４００および第二モジュールバスバ２４５０は銅、アルミなど、電気伝導率が比較的よい材料で作製される。 The first module bus bar 2400 protrudes from the end plate 2100 in the x-axis direction, and the second module bus bar 2450 is formed in the end plate 2100 in the x-axis direction. In the adjacent secondary battery module 2000, when one first module bus bar 2400 and the other second module bus bar 2450 are connected, the adjacent secondary battery modules 2000 are electrically connected in series. The cell bus bar 500, the first module bus bar 2400, and the second module bus bar 2450 are formed on the same plane. Thereby, the useless space in the secondary battery module 2000 is reduced, and the energy density of the secondary battery module 2000 can be improved. The first module bus bar 2400 and the second module bus bar 2450 are made of a material having a relatively good electrical conductivity such as copper or aluminum.
　ｙ軸方向において、第一モジュールバスバ２４００はセルバスバ５００に比べて突出している。ｙ軸方向において、第一モジュールバスバ２４００はセルバスバ５００と同一平面に形成されていてもよい。その場合、第二モジュールバスバ２４５０をなくして、第一モジュールバスバ２４００をセルバスバ５００と接続して、隣接する二次電池モジュール２０００を電気的に直列に接続してもよい。この場合、ｘ軸方向端部に形成されたセルバスバ５００が第二モジュールバスバ２４５０となる。 In the y-axis direction, the first module bus bar 2400 protrudes compared to the cell bus bar 500. In the y-axis direction, the first module bus bar 2400 may be formed on the same plane as the cell bus bar 500. In that case, the second module bus bar 2450 may be eliminated, the first module bus bar 2400 may be connected to the cell bus bar 500, and the adjacent secondary battery modules 2000 may be electrically connected in series. In this case, the cell bus bar 500 formed at the end in the x-axis direction becomes the second module bus bar 2450.
　二次電池１０００中の電極端子は二次電池１０００のｚ軸方向両端に形成されており、電極端子の形成箇所に合わせて、セルバスバ５００も二次電池１０００のｚ軸方向両端に形成されている。第一モジュールバスバ２４００は、ｚ軸におけるサイドプレート２２００およびエンドプレート２１００をネジ止めするネジの間、セルバスバ５００の間に形成されている。第二モジュールバスバ２４５０はｚ軸におけるセルバスバ５００の上部に形成されている。セルバスバ５００をｚ軸方向の一方方向に偏らせて配置させてもよい。ｚ軸方向において、セルバスバ５００の間に第一モジュールバスバ２４００を形成することにより、二次電池モジュール２０００の信頼性を向上できる。 The electrode terminals in the secondary battery 1000 are formed at both ends of the secondary battery 1000 in the z-axis direction, and the cell bus bar 500 is also formed at both ends of the secondary battery 1000 in the z-axis direction in accordance with the positions where the electrode terminals are formed. . The first module bus bar 2400 is formed between the cell bus bars 500 between the screws for screwing the side plate 2200 and the end plate 2100 in the z-axis. The second module bus bar 2450 is formed on the cell bus bar 500 in the z-axis. The cell bus bar 500 may be arranged so as to be biased in one direction in the z-axis direction. By forming the first module bus bar 2400 between the cell bus bars 500 in the z-axis direction, the reliability of the secondary battery module 2000 can be improved.
　セルバスバ５００は電極端子に電気的に接続されている。セルバスバ５００は複数の二次電池１０００を電気的に接続する。セルバスバ５００の材質は、アルミニウム、アルミニウム合金、銅、銅合金等から選択される。 The cell bus bar 500 is electrically connected to the electrode terminals. The cell bus bar 500 electrically connects a plurality of secondary batteries 1000. The material of the cell bus bar 500 is selected from aluminum, aluminum alloy, copper, copper alloy and the like.
　図４、図５は、本発明の一実施形態に係る二次電池の模式図である。二次電池１０００は、正極１００、負極２００、正極端子１５０、負極端子２５０、セパレータ３００、外装体を有する。図４のように、正極１００、負極２００、セパレータ３００が積層されている方向がｘ軸方向、積層方向の垂面方向がｙｚ平面方向、となる。以下では、正極１００または負極２００を電極、正極合剤層１１０または負極合剤層２１０を電極合剤層、正極集電体１２０または負極集電体２２０を電極集電体、正極タブ１３０または負極タブ２３０を電極タブ、正極端子１５０または負極端子２５０を電極端子、と称する場合がある
。 4 and 5 are schematic views of a secondary battery according to an embodiment of the present invention. The secondary battery 1000 includes a positive electrode 100, a negative electrode 200, a positive electrode terminal 150, a negative electrode terminal 250, a separator 300, and an outer package. As shown in FIG. 4, the direction in which the positive electrode 100, the negative electrode 200, and the separator 300 are stacked is the x-axis direction, and the vertical direction in the stacking direction is the yz plane direction. Hereinafter, the positive electrode 100 or the negative electrode 200 is an electrode, the positive electrode mixture layer 110 or the negative electrode mixture layer 210 is an electrode mixture layer, the positive electrode current collector 120 or the negative electrode current collector 220 is an electrode current collector, the positive electrode tab 130 or the negative electrode The tab 230 may be referred to as an electrode tab, and the positive electrode terminal 150 or the negative electrode terminal 250 may be referred to as an electrode terminal.
　正極１００、セパレータ３００、負極２００が積層されて電極体４００が構成される。二次電池１０００は、複数の電極体４００が積層されて構成される。正極タブ１３０同士および負極タブ２３０が接続されることで、二次電池１０００中で電気的な並列接続が構成される。図４の二次電池１０００は積層型の二次電池であるが、捲回円筒型の二次電池
、捲回角型の二次電池を適用してもよい。 The positive electrode 100, the separator 300, and the negative electrode 200 are laminated | stacked and the electrode body 400 is comprised. The secondary battery 1000 is configured by laminating a plurality of electrode bodies 400. By connecting the positive electrode tabs 130 to each other and the negative electrode tab 230, an electrical parallel connection is configured in the secondary battery 1000. The secondary battery 1000 in FIG. 4 is a stacked secondary battery, but a wound cylindrical secondary battery or a wound square secondary battery may be applied.
　＜正極１００＞
　正極１００は、正極合剤層１１０、正極集電体１２０、および正極タブ１３０を有する
。正極集電体１２０の両面に正極合剤層１１０が形成されている。 <Positive electrode 100>
The positive electrode 100 includes a positive electrode mixture layer 110, a positive electrode current collector 120, and a positive electrode tab 130. A positive electrode mixture layer 110 is formed on both surfaces of the positive electrode current collector 120.
　＜正極合剤層１１０＞
　正極合剤層１１０には、少なくともＬｉの吸蔵・放出が可能な正極活物質が含まれている。正極活物質としては、ＬｉＣｏ系酸化物、ＬｉＮｉ系複合酸化物、ＬｉＭｎ系複合酸化物な、Ｌｉ－Ｃｏ－Ｎｉ－Ｍｎ複合酸化物、ＬｉＦｅＰ系酸化物などが上げられる。正極合剤層１１０中に、正極合剤層１１０内の電子伝導性を担う導電材や、正極合剤層１１０内の材料間の密着性を確保するバインダ、さらには正極合剤層１１０内のイオン伝導性を確保するための固体電解質を含めてもよい。 <Positive electrode mixture layer 110>
The positive electrode mixture layer 110 contains at least a positive electrode active material capable of inserting and extracting Li. Examples of the positive electrode active material include LiCo-based oxides, LiNi-based composite oxides, LiMn-based composite oxides, Li-Co-Ni-Mn composite oxides, LiFeP-based oxides, and the like. In the positive electrode mixture layer 110, a conductive material responsible for electronic conductivity in the positive electrode mixture layer 110, a binder that ensures adhesion between the materials in the positive electrode mixture layer 110, and further in the positive electrode mixture layer 110 A solid electrolyte for ensuring ionic conductivity may be included.
　正極合剤層１１０を作製する方法として、正極合剤層１１０に含まれる材料を溶媒に溶かしてスラリー化し、それを正極集電体１２０上に塗工する。塗工方法に特段の限定はなく、例えば、ドクターブレード法、ディッピング法、スプレー法などの従前の方法を利用できる。その後、溶媒を除去するための乾燥、正極合剤層１１０内の電子伝導性、イオン伝導性を確保するためのプレス工程を経て、正極合剤層１１０が形成される。 As a method for producing the positive electrode mixture layer 110, a material contained in the positive electrode mixture layer 110 is dissolved in a solvent to form a slurry, which is applied onto the positive electrode current collector 120. The coating method is not particularly limited, and for example, a conventional method such as a doctor blade method, a dipping method, or a spray method can be used. Thereafter, the positive electrode mixture layer 110 is formed through a drying process for removing the solvent and a pressing process for ensuring the electron conductivity and ion conductivity in the positive electrode mixture layer 110.
　＜正極集電体１２０、正極タブ１３０＞
　正極集電体１２０は正極タブ１３０と電気的に接続されている。正極タブ１３０は電極体４００の外部に導出されている。図４において、正極タブ１３０には正極合剤層１１０が形成されていない。ただし、電池性能に悪影響を与えない範囲で正極タブ１３０に正極合剤層１１０を形成してもよい。 <Positive electrode current collector 120, positive electrode tab 130>
The positive electrode current collector 120 is electrically connected to the positive electrode tab 130. The positive electrode tab 130 is led out of the electrode body 400. In FIG. 4, the positive electrode mixture layer 110 is not formed on the positive electrode tab 130. However, the positive electrode mixture layer 110 may be formed on the positive electrode tab 130 as long as the battery performance is not adversely affected.
　正極集電体１２０および正極タブ１３０には、アルミニウム箔や孔径０．１～１０ｍｍのアルミニウム製穿孔箔、エキスパンドメタル、発泡アルミニウム板などが用いられる。材質は、アルミニウムの他に、ステンレス、チタンなども適用できる。正極集電体１２０および正極タブ１３０の厚さは、好ましくは１０ｎｍ～１ｍｍである。二次電池１０００のエネルギー密度と電極の機械強度両立の観点から１～１００μｍ程度が望ましい。 For the positive electrode current collector 120 and the positive electrode tab 130, an aluminum foil, an aluminum perforated foil having a hole diameter of 0.1 to 10 mm, an expanded metal, an aluminum foam plate, or the like is used. As the material, stainless steel, titanium, or the like can be applied in addition to aluminum. The thicknesses of the positive electrode current collector 120 and the positive electrode tab 130 are preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the secondary battery 1000 and the mechanical strength of the electrode, about 1 to 100 μm is desirable.
　＜負極２００＞
　負極２００、負極合剤層２１０、負極集電体２２０、および負極タブ２３０を有する。負極集電体２２０の両面に負極合剤層２１０が形成されている。 <Negative electrode 200>
It has a negative electrode 200, a negative electrode mixture layer 210, a negative electrode current collector 220, and a negative electrode tab 230. Negative electrode mixture layers 210 are formed on both surfaces of the negative electrode current collector 220.
　＜負極合剤層２１０＞
　負極合剤層２１０には、少なくともＬｉの吸蔵・放出が可能な正極活物質が含まれている。負極活物質としては、天然黒鉛、ソフトカーボン、非晶質炭素などの炭素系材料、Ｓｉ金属やＳｉ合金、チタン酸リチウム、リチウム金属などが上げられる。負極合剤層２１０中に、負極合剤層２１０内の電子伝導性を担う導電材や、負極合剤層２１０内の材料間の密着性を確保するバインダ、さらには負極合剤層２１０内のイオン伝導性を確保するための固体電解質を含めてもよい。 <Negative electrode mixture layer 210>
The negative electrode mixture layer 210 contains at least a positive electrode active material capable of inserting and extracting Li. Examples of the negative electrode active material include carbon-based materials such as natural graphite, soft carbon, and amorphous carbon, Si metal, Si alloy, lithium titanate, and lithium metal. In the negative electrode mixture layer 210, a conductive material responsible for electronic conductivity in the negative electrode mixture layer 210, a binder that ensures adhesion between the materials in the negative electrode mixture layer 210, and further in the negative electrode mixture layer 210 A solid electrolyte for ensuring ionic conductivity may be included.
　負極合剤層２１０を作製する方法として、負極合剤層２１０に含まれる材料を溶媒に溶かしてスラリー化し、それを負極集電体２２０上に塗工する。塗工方法に特段の限定はなく、例えば、ドクターブレード法、ディッピング法、スプレー法などの従前の方法を利用できる。その後、溶媒を除去するための乾燥、負極合剤層２１０内の電子伝導性、イオン伝導性を確保するためのプレス工程を経て、負極合剤層２１０が形成される。 As a method for producing the negative electrode mixture layer 210, the material contained in the negative electrode mixture layer 210 is dissolved in a solvent to form a slurry, which is applied onto the negative electrode current collector 220. The coating method is not particularly limited, and for example, a conventional method such as a doctor blade method, a dipping method, or a spray method can be used. Then, the negative mix layer 210 is formed through the drying process for removing a solvent, and the press process for ensuring the electron conductivity in the negative mix layer 210, and ion conductivity.
　＜負極集電体２２０、負極タブ２３０＞
　負極集電体２２０および負極タブ２３０の構成は、概ね正極集電体１２０および正極タブ１３０の構成と同様である。 <Negative electrode current collector 220, negative electrode tab 230>
The configurations of the negative electrode current collector 220 and the negative electrode tab 230 are substantially the same as the configurations of the positive electrode current collector 120 and the positive electrode tab 130.
　負極集電体２２０および負極タブ２３０には、銅箔や孔径０．１～１０ｍｍの銅製穿孔箔、エキスパンドメタル、発泡銅板などが用いられ、材質は、銅の他に、ステンレス、チタン、ニッケルなども適用できる。負極集電体２２０および負極タブ２３０の厚さは、好ましくは１０ｎｍ～１ｍｍである。二次電池１０００のエネルギー密度と電極の機械強度両立の観点から１～１００μｍ程度が望ましい。 For the negative electrode current collector 220 and the negative electrode tab 230, copper foil, copper perforated foil having a hole diameter of 0.1 to 10 mm, expanded metal, foamed copper plate, etc. are used. Is also applicable. The thickness of the negative electrode current collector 220 and the negative electrode tab 230 is preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the secondary battery 1000 and the mechanical strength of the electrode, about 1 to 100 μm is desirable.
　＜セパレータ３００＞
　セパレータ３００は、正極１００と負極２００との間に形成され、二次電池１０００がリチウムイオン二次電池の場合リチウムイオンを透過させ、正極１００と負極２００の短絡を防止する。セパレータ３００を構成する材料として、微多孔膜や固体電解質等を利用できる。 <Separator 300>
Separator 300 is formed between positive electrode 100 and negative electrode 200, and when secondary battery 1000 is a lithium ion secondary battery, it allows lithium ions to pass therethrough and prevents short circuit between positive electrode 100 and negative electrode 200. As a material constituting the separator 300, a microporous film, a solid electrolyte, or the like can be used.
　微多孔膜として、ポリエチレンやポリプロピレンといったポリオレフィンやガラス繊維などを利用できる。セパレータ３００に微多孔膜が用いられる場合、複数の電極体４００を収納する外装体の空いている１辺や注液孔から二次電池１０００に電解液を注入することで、二次電池１０００中に電解液が充填される。 As the microporous film, polyolefin such as polyethylene or polypropylene, glass fiber, or the like can be used. When a microporous membrane is used for the separator 300, the electrolyte solution is injected into the secondary battery 1000 from the vacant side or the injection hole of the exterior body that houses the plurality of electrode bodies 400. Is filled with an electrolyte solution.
　電解液は、例えば溶媒及びリチウム塩を有し、正極１００と負極２００の間でリチウムイオンの伝達させる媒体となる。溶媒として、エチレンカーボネート（ＥＣ）、ジメチルカーボネート（ＤＭＣ）、ジエチルカーボネート（ＤＥＣ）、プロピレンカーボネート、ブチレンカーボネート、γ－ブチロラクトン、リン酸トリエステル、トリメトキシメタン、ジオキソラン、ジエチルエーテル、スルホラン等を用いることができる。こられの材料を単独または複数組み合わせて使用してもよい。リチウム塩としては、例えば、ＬｉＰＦ６、ＬｉＢＦ４、ＬｉＣｌＯ４、ＬｉＣＦ３ＳＯ３、ＬｉＣＦ３ＣＯ２、ＬｉＡｓＦ６、ＬｉＳｂＦ６、リチウムビスオキサレートボラート（ＬｉＢＯＢ）、リチウムイミド塩（例えば、リチウムビス（フルオロスルホニル）イミド、ＬｉＦＳＩ）等を好ましく用いることができる。これらのリチウム塩を単独または複数組み合わせて使用してもよい。 The electrolytic solution includes, for example, a solvent and a lithium salt, and serves as a medium for transmitting lithium ions between the positive electrode 100 and the negative electrode 200. Use ethylene carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), propylene carbonate, butylene carbonate, γ-butyrolactone, phosphate triester, trimethoxymethane, dioxolane, diethyl ether, sulfolane, etc. as the solvent. Can do. These materials may be used alone or in combination. Examples of the lithium salt, LiPF 6, LiBF 4, LiClO 4, LiCF 3 SO 3, LiCF 3 CO 2, LiAsF 6, LiSbF 6, lithium bis oxalate borate (LiBOB), lithium imide salt (e.g., lithium bis (Fluorosulfonyl) imide, LiFSI) and the like can be preferably used. These lithium salts may be used alone or in combination.
　固体電解質として、Ｌｉ１０Ｇｅ２ＰＳ１２、Ｌｉ２Ｓ－Ｐ２Ｓ５などの硫化物系、Ｌｉ－Ｌａ－Ｚｒ－Ｏなどの酸化物系、イオン液体や常温溶融塩などを有機高分子や無機粒子などに担持させた半固体電解質、高分子ゲルを電解質としたゲル電解質等を利用できる。セパレータ３００として固体電解質を用いた場合、固体電解質が正極１００と負極２００の間にリチウムイオンの伝達させる媒体となり、上記の電解液は基本不要となるため、二次電池１０００中で電気的な直列接続を構成できる。ただし、二次電池１０００中での電気的な短絡を防止できるのであれば、セパレータ３００として固体電解質を用いた場合でも二次電池１０００中に電解液を添加してもよい。 As the solid electrolyte, Li 10 Ge 2 PS 12, Li 2 S-P 2 S 5 sulfide such as oxide-based, such as Li-La-Zr-O, the organic polymer Ya an ion liquid or ambient temperature molten salt A semi-solid electrolyte supported on inorganic particles or the like, a gel electrolyte using a polymer gel as an electrolyte, or the like can be used. When a solid electrolyte is used as the separator 300, the solid electrolyte serves as a medium for transmitting lithium ions between the positive electrode 100 and the negative electrode 200, and the above-described electrolytic solution is basically unnecessary. You can configure the connection. However, an electrolytic solution may be added to the secondary battery 1000 even when a solid electrolyte is used as the separator 300 as long as an electrical short circuit in the secondary battery 1000 can be prevented.
　セパレータ３００は、シートとして正極１００と負極２００との間に形成してもよいし
、電極合剤層の上に塗布により形成してもよい。電極合剤層の両面にセパレータ３００を形成してもよく、正極１００と負極２００との間にセパレータ３００が形成されれば、電極合剤層の片面にセパレータ３００が形成されていてもよい。セパレータ３００の厚さは二次電池１０００のエネルギー密度、電子絶縁性の確保等の観点から数ｎｍ～数ｍｍのサイズとなる。 The separator 300 may be formed between the positive electrode 100 and the negative electrode 200 as a sheet, or may be formed by coating on the electrode mixture layer. The separator 300 may be formed on both surfaces of the electrode mixture layer, and if the separator 300 is formed between the positive electrode 100 and the negative electrode 200, the separator 300 may be formed on one surface of the electrode mixture layer. The thickness of the separator 300 is several nanometers to several millimeters from the viewpoint of ensuring the energy density of the secondary battery 1000 and ensuring electronic insulation.
　＜電極端子＞
　正極端子１５０および負極端子２５０は電極タブと電気的に接続される。正極端子１５０および負極端子２５０の材質として、アルミニウム、銅、ニッケル、ステンレスなどの金属を用いることができる。 <Electrode terminal>
The positive terminal 150 and the negative terminal 250 are electrically connected to the electrode tab. As a material of the positive electrode terminal 150 and the negative electrode terminal 250, metals such as aluminum, copper, nickel, and stainless steel can be used.
　＜外装体７００＞
　外装体７００は、電極、セパレータ３００、電極端子を収納する。電極端子をセルバスバ５００に電気的に接続させるために、外装体の電極端子が形成されている面では、電極端子を露出させるように外装体７００に開口部が形成されている。外装体７００の材質はアルミニウム、ステンレス鋼、ニッケルメッキ鋼製など、電解質に対し耐食性のある材料から選択される。 <Exterior body 700>
The exterior body 700 houses the electrodes, the separator 300, and the electrode terminals. In order to electrically connect the electrode terminal to the cell bus bar 500, an opening is formed in the exterior body 700 so as to expose the electrode terminal on the surface of the exterior body where the electrode terminal is formed. The material of the exterior body 700 is selected from materials that are corrosion resistant to the electrolyte, such as aluminum, stainless steel, and nickel-plated steel.
　図６は、本発明の一実施形態に係る組電池である。組電池３０００は、複数の二次電池モジュール２０００を有し、隣接する二次電池モジュール２０００は一方の二次電池モジュール２０００中の第一モジュールバスバ２４００および他方の二次電池モジュール２０００中の第二モジュールバスバ２４５０によって、電気的に直列に接続されている。 FIG. 6 shows an assembled battery according to an embodiment of the present invention. The assembled battery 3000 includes a plurality of secondary battery modules 2000, and the adjacent secondary battery modules 2000 are the first module bus bar 2400 in one secondary battery module 2000 and the second in the other secondary battery module 2000. The module bus bar 2450 is electrically connected in series.
　図７は、本発明の一実施形態に係る二次電池モジュールである。本実施例では、二次電池１０００がバイポーラ型の二次電池となっている。バイポーラ型の二次電池とは、二次電池１０００内で電気的な直列接続が構成されている二次電池をいう。 FIG. 7 shows a secondary battery module according to an embodiment of the present invention. In this embodiment, the secondary battery 1000 is a bipolar secondary battery. The bipolar secondary battery refers to a secondary battery in which an electrical series connection is configured in the secondary battery 1000.
　第一モジュールバスバ２４００および第二モジュールバスバ２４５０は、二次電池モジュール２０００内の複数の二次電池１０００と接続されている。換言すれば、複数の二次電池１０００の一方の電極端子が第一モジュールバスバ２４００に接続されており、他方の電極端子が第二モジュールバスバ２４５０に接続されている。これにより、複数の二次電池１０００は電気的に並列に接続される。本実施例では、セルバスバ５００を不要にできるので、二次電池モジュール２０００をコンパクトにでき、二次電池モジュール２０００のエネルギー密度を向上できる。 The first module bus bar 2400 and the second module bus bar 2450 are connected to a plurality of secondary batteries 1000 in the secondary battery module 2000. In other words, one electrode terminal of the plurality of secondary batteries 1000 is connected to the first module bus bar 2400, and the other electrode terminal is connected to the second module bus bar 2450. Thereby, the some secondary battery 1000 is electrically connected in parallel. In the present embodiment, since the cell bus bar 500 can be eliminated, the secondary battery module 2000 can be made compact, and the energy density of the secondary battery module 2000 can be improved.
　図８、図９は、本発明の一実施形態に係る二次電池モジュールの模式図である。本実施例では、ｙ軸方向に設けた凹みをエンドプレート開口部２１１０とし、エンドプレート２１００のｙ軸方向に第一モジュールバスバ２４００が貫通できる程度の空間を形成している。サイドプレート２２００のｙ軸方向端部では段差が形成されており、サイドプレート２２００の段差に合わせてサイドプレート２２００のｘ軸方向端部にも段差が形成されている。サイドプレート２２００の段差部およびサイドプレート２２００の段差部でｙ軸方向にネジ止めされている。y軸方向において、サイドプレート２２００と二次電池１０００との間に形成されている空間にセルバスバ５００が配置される。 8 and 9 are schematic views of a secondary battery module according to an embodiment of the present invention. In the present embodiment, a recess provided in the y-axis direction is used as an end plate opening 2110, and a space that allows the first module bus bar 2400 to penetrate in the y-axis direction of the end plate 2100 is formed. A step is formed at the y-axis direction end of the side plate 2200, and a step is also formed at the x-axis direction end of the side plate 2200 in accordance with the step of the side plate 2200. Screwed in the y-axis direction at the stepped portion of the side plate 2200 and the stepped portion of the side plate 2200. Cell bus bar 500 is arranged in a space formed between side plate 2200 and secondary battery 1000 in the y-axis direction.
　本実施例では、サイドプレート２２００とエンドプレート２１００とのネジ止めの方向がエンドプレート２１００による複数の二次電池１０００の固縛の方向と垂直になっているため、エンドプレート２１００を細くすることができ、二次電池モジュール２０００のエネルギー密度を向上できる。ｚ軸方向において、サイドプレート２２００が上下二つ形成されており、二つのサイドプレート２２００に回路基板を配置できる。 In this embodiment, since the direction of screwing the side plate 2200 and the end plate 2100 is perpendicular to the direction of securing the plurality of secondary batteries 1000 by the end plate 2100, the end plate 2100 can be made thinner. The energy density of the secondary battery module 2000 can be improved. In the z-axis direction, two upper and lower side plates 2200 are formed, and circuit boards can be arranged on the two side plates 2200.
　図１０は、本発明の一実施形態に係る組電池である。組電池３０００は、一対のサイドプレート２２００を有している。二次電池モジュール２０００単位ではエンドプレート２１００が形成されておらず、エンドプレート２１００は組電池３０００の両端にだけ形成されている。これにより、組電池３０００をコンパクトかつ軽量にできる。 FIG. 10 shows an assembled battery according to an embodiment of the present invention. The assembled battery 3000 has a pair of side plates 2200. In the secondary battery module 2000 unit, the end plate 2100 is not formed, and the end plate 2100 is formed only at both ends of the assembled battery 3000. Thereby, the assembled battery 3000 can be made compact and lightweight.
　二次電池モジュール２０００単位ではサイドプレート２２００が形成されておらず、ｚ軸方向において、二枚のサイドプレート２２００が上下に配置されている。これにより、組電池３０００を軽量にできる。サイドプレート２２００を二次電池モジュール２０００単位で形成してもよい。 In the secondary battery module 2000 unit, the side plate 2200 is not formed, and the two side plates 2200 are vertically arranged in the z-axis direction. Thereby, the assembled battery 3000 can be made lightweight. The side plate 2200 may be formed in units of the secondary battery module 2000.
１００　正極
１１０　正極合剤層
１２０　正極集電体
１３０　正極タブ
１５０　正極端子
２００　負極
２１０　負極合剤層
２２０　負極集電体
２３０　負極タブ
２５０　負極端子
３００　セパレータ
４００　電極体
５００　セルバスバ
７００　外装体
１０００　二次電池
２０００　二次電池モジュール
２１００　エンドプレート
２１１０　エンドプレート開口部
２２００　サイドプレート
２２１０　サイドプレート固定部
２２２０　サイドプレート開口部
２３００　回路基板
２３１０　回路基板凹み
２４００　第一モジュールバスバ
２４５０　第二モジュールバスバ
３０００　組電池 DESCRIPTION OF SYMBOLS 100 Positive electrode 110 Positive electrode mixture layer 120 Positive electrode collector 130 Positive electrode tab 150 Positive electrode terminal 200 Negative electrode 210 Negative electrode mixture layer 220 Negative electrode collector 230 Negative electrode tab 250 Negative electrode terminal 300 Separator 400 Electrode body 500 Cell bus bar 700 Outer body 1000 Secondary battery 2000 Secondary battery module 2100 End plate 2110 End plate opening 2200 Side plate 2210 Side plate fixing part 2220 Side plate opening 2300 Circuit board 2310 Circuit board recess 2400 First module bus bar 2450 Second module bus bar 3000 Assembly battery

Claims (6)

  1. 　電極端子を有する二次電池を複数有する二次電池モジュールであって、
    　前記二次電池モジュールは、隣接する二次電池モジュールに電気的に接続するための第一モジュールバスバおよび第二モジュールバスバを有し
    　前記第一モジュールバスバおよび第二モジュールバスバは、前記電極端子が形成された面と同一平面に形成され、
    　前記第一モジュールバスバは、前記二次電池モジュールから突出しており、
    　前記第二モジュールバスバは、前記二次電池モジュール内に形成されている二次電池モジュール。     A secondary battery module having a plurality of secondary batteries having electrode terminals,
    The secondary battery module has a first module bus bar and a second module bus bar for electrically connecting to an adjacent secondary battery module. The first module bus bar and the second module bus bar are formed by the electrode terminals. Formed in the same plane as the
    The first module bus bar protrudes from the secondary battery module,
    The second module bus bar is a secondary battery module formed in the secondary battery module.
  2. 　請求項１の二次電池モジュールにおいて、
    　複数の前記二次電池を固縛するエンドプレートを有し、
    　前記エンドプレートにエンドプレート開口部が形成され、
    　前記第一モジュールバスバは、前記エンドプレート開口部を貫通する二次電池モジュール。     The secondary battery module according to claim 1,
    An end plate for securing the plurality of secondary batteries;
    An end plate opening is formed in the end plate,
    The first module bus bar is a secondary battery module that passes through the end plate opening.
  3. 　請求項２の二次電池モジュールにおいて、
    　複数の前記二次電池を固縛するエンドプレートを保持するサイドプレートと、
    　前記サイドプレートおよび複数の前記二次電池の間に形成された回路基板と、を有する二次電池モジュール。     The secondary battery module according to claim 2,
    A side plate holding an end plate for securing the plurality of secondary batteries;
    And a circuit board formed between the side plate and the plurality of secondary batteries.
  4. 　請求項３の二次電池モジュールにおいて、
    　前記回路基板に回路基板凹みが形成されている二次電池モジュール。     The secondary battery module according to claim 3,
    A secondary battery module in which a circuit board recess is formed in the circuit board.
  5. 　請求項３の二次電池モジュールにおいて、
    　前記サイドプレートにサイドプレート開口部が形成されている二次電池モジュール。     The secondary battery module according to claim 3,
    A secondary battery module in which a side plate opening is formed in the side plate.
  6. 　請求項１の二次電池モジュールにおいて、
    　複数の前記二次電池を電気的に接続する複数のセルバスバを有し、
    　前記第一モジュールバスバは、前記複数のセルバスバの間に形成されている二次電池モジュール。     The secondary battery module according to claim 1,
    A plurality of cell bus bars for electrically connecting the plurality of secondary batteries;
    The first module bus bar is a secondary battery module formed between the plurality of cell bus bars.
PCT/JP2018/007455 2017-05-31 2018-02-28 Secondary cell module WO2018220924A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001216950A (en) * 2000-02-02 2001-08-10 Sony Corp Chip type battery and battery pack device
JP2012234684A (en) * 2011-04-28 2012-11-29 Kawasaki Heavy Ind Ltd Battery system enabling easy maintenance
JP2016152133A (en) * 2015-02-17 2016-08-22 藤倉ゴム工業株式会社 Metal air battery unit and metal air battery
JP2017054866A (en) * 2015-09-07 2017-03-16 株式会社豊田自動織機 Power storage module

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2012101728A1 (en) 2011-01-25 2014-06-30 パナソニック株式会社 Battery module and assembled battery used therefor
JP2012252924A (en) 2011-06-03 2012-12-20 Primearth Ev Energy Co Ltd Manufacturing method of battery pack

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001216950A (en) * 2000-02-02 2001-08-10 Sony Corp Chip type battery and battery pack device
JP2012234684A (en) * 2011-04-28 2012-11-29 Kawasaki Heavy Ind Ltd Battery system enabling easy maintenance
JP2016152133A (en) * 2015-02-17 2016-08-22 藤倉ゴム工業株式会社 Metal air battery unit and metal air battery
JP2017054866A (en) * 2015-09-07 2017-03-16 株式会社豊田自動織機 Power storage module

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