WO2011111721A1 - Équipement de connexion de batterie, et module de batterie assemblée mettant en œuvre celui-ci - Google Patents

Équipement de connexion de batterie, et module de batterie assemblée mettant en œuvre celui-ci Download PDF

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Publication number
WO2011111721A1
WO2011111721A1 PCT/JP2011/055445 JP2011055445W WO2011111721A1 WO 2011111721 A1 WO2011111721 A1 WO 2011111721A1 JP 2011055445 W JP2011055445 W JP 2011055445W WO 2011111721 A1 WO2011111721 A1 WO 2011111721A1
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WIPO (PCT)
Prior art keywords
electrode
battery
connection tool
connection
unit cell
Prior art date
Application number
PCT/JP2011/055445
Other languages
English (en)
Japanese (ja)
Inventor
修一 伊藤
Original Assignee
株式会社キャプテックス
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Filing date
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Application filed by 株式会社キャプテックス filed Critical 株式会社キャプテックス
Publication of WO2011111721A1 publication Critical patent/WO2011111721A1/fr

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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
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/524—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/526—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button 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
    • H01M50/569—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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/579—Devices or arrangements for the interruption of current in response to shock
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery connection tool and an assembled battery module using the battery connection tool. More specifically, for example, the present invention relates to a battery connection tool capable of improving the reliability of electrical connection between an electrode such as a secondary battery and a connection terminal, and an assembled battery module using the battery connection tool.
  • lithium ion batteries are superior in charge / discharge characteristics, lightweight, and environmental and human compared to other secondary batteries (eg, nickel cadmium storage battery, nickel hydrogen battery). Does not contain substances that are said to have adverse effects. For this reason, the technological development of lithium ion batteries is particularly advanced, and excellent products are distributed in the market.
  • lithium ion batteries there are various types of lithium ion batteries such as a button type, a cylindrical type, an elliptical column type, and a rectangular column type.
  • Cylindrical lithium ion batteries for example, 18650 type and 26650 type have been developed.
  • a lithium ion battery such as a 18650 type is in the form of an assembled battery module in which the lithium ion batteries are combined, and is widely used as a power source for, for example, a notebook personal computer, a power tool, and an electrically assisted bicycle.
  • resistance welding for example, resistance welding, laser welding, or the like has been adopted for connection between electrodes of a secondary battery or the like in addition to soldering connection in order to increase the connection strength.
  • resistance welding spot welding
  • this spot welding in order to increase the yield, it is common to perform welding at a plurality of locations on the same electrode (so-called multi-point welding). Further, in order to prevent welding from becoming insufficient, for example, in a connection terminal in which multi-point welding is performed on one electrode, it is common to provide a notch between each welded portion.
  • connection terminal repeats thermal expansion and contraction due to heat generated by the secondary battery during charging and discharging. Therefore, the stress on the connection portion with the electrode is further increased.
  • the number of connection portions increases, and thus a strong and more reliable electrical connection is required between the electrode and the connection terminal.
  • the present invention aims to solve the above problems.
  • the purpose is to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and reliability and stability of each electrical connection when configuring an assembled battery module It is an object of the present invention to provide a battery connecting tool that holds the battery and an assembled battery module using the same.
  • the battery connection tool of the present invention comprises: Including electrode mounting part and connection terminal, The connection terminal is connected to the electrode mounting portion;
  • the electrode mounting portion includes an electrode contact portion disposed on the upper surface of the electrode and a fixing portion disposed on the side surface of the electrode or the side surface of the battery body. It is characterized by that.
  • the assembled battery module of the present invention is An assembled battery module in which two or more batteries are connected, wherein the battery connection tool of the present invention is used to connect the two or more batteries.
  • the battery connection tool of the present invention for example, it is excellent in vibration resistance without being connected by welding such as resistance welding between an electrode such as a secondary battery and a connection terminal, and also generates heat during charging and discharging. An extremely good electrical connection can be made without being influenced.
  • (A) is a perspective view which shows the structure of an example in Embodiment 1 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in the AA direction of a connection tool.
  • (A) is a perspective view for explaining connection of the unit cell of the example to the negative electrode,
  • (b) is a perspective view showing the connection state, and
  • (c) is a BB direction of the connection state shown in (b).
  • Cross-sectional view (d) is a perspective view for explaining connection of the unit cell of the example to the positive electrode, (e) is a perspective view showing the connection state, and (f) is a C state of the connection state shown in (e).
  • Sectional view seen in the -C direction, (g) is a perspective view showing another example of the connection state of the unit cell of the example to the negative electrode.
  • (A) is a perspective view showing the configuration of another example in Embodiment 1, (b) is a top view, (c) is a bottom view, and (d) is a D-- of the battery connection tool shown in (a). It is sectional drawing seen in the D direction.
  • (A) is a perspective view for explaining the connection of the unit cells of the other examples to the negative electrode, (b) is a perspective view showing the connection state, and (c) is an EE in the connection state shown in (b).
  • (D) is a perspective view for explaining the connection of the unit cell of the other example to the positive electrode
  • (e) is a perspective view showing the connection state
  • (f) is shown in (e). It is sectional drawing seen in the FF direction of the connection state.
  • (A) is a perspective view which shows the structure of the further another example in Embodiment 1, (b) is the same top view, (c) is the same bottom view, (d) is G of the battery connection tool shown in (a). It is sectional drawing seen in-G direction.
  • (A) is a perspective view explaining the connection of the battery connection tool shown in FIG. 5 to the negative electrode of the unit cell
  • (b) is a perspective view showing the connection state
  • (c) is a connection shown in (b).
  • FIG. 5D is a cross-sectional view of the state viewed in the HH direction
  • FIG. 5D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 5 to the positive electrode of the unit cell
  • FIG. (F) It is sectional drawing seen in the II direction of the connection state shown to (e).
  • (A) is a perspective view which shows the structure of the further another example in Embodiment 1,
  • (b) is the same top view,
  • (c) is the same bottom view.
  • (D) is a cross-sectional view of the battery connection tool shown in (a) as viewed in the JJ direction, and
  • (e) is a bottom view showing the configuration of still another example in the first embodiment.
  • (A) is a perspective view for explaining the connection of the battery connection tool shown in FIG.
  • FIG. 7D is a cross-sectional view in the KK direction of the state
  • FIG. 7D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 7 to the positive electrode of the unit cell
  • FIG. (F) is a cross-sectional view of the connection state shown in (e) as viewed in the LL direction.
  • A) is the perspective view which shows the structure of the further another example in Embodiment 1
  • (b) is the top view
  • (c) is the bottom view
  • (d) is M of the battery connection tool shown to (a).
  • FIG. 9A is a figure which shows the preparation method and structure of an example of a needle-like protrusion.
  • B is a figure which shows the structure of the other example of a needle-like protrusion.
  • C is a figure which shows the structure of the further another example of a acicular protrusion.
  • A) is a perspective view explaining the connection to the negative electrode of the cell of the battery connection tool shown in FIG. 9A
  • (b) is a perspective view showing the connection state
  • (c) is the connection shown in (b).
  • FIG. 9D is a perspective view illustrating connection of the battery connection tool shown in FIG. 9A to the positive electrode of the unit cell
  • FIG. 9E is a perspective view illustrating the connection state.
  • FIG. 11D is a cross-sectional view in the QQ direction of the state, FIG.
  • FIG. 11D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 11 to the positive electrode of the unit cell
  • FIG. (F) is a cross-sectional view seen in the RR direction of the connected state shown in (e).
  • (A) is a perspective view which shows the structure of an example in Embodiment 2 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in SS direction of a connection tool.
  • (A) is a perspective view for explaining connection to the unit cell of the example,
  • (b) is a perspective view showing the connection state, and (c) is seen in the TT direction of the connection state shown in (b). It is sectional drawing.
  • FIG. (A) is a perspective view which shows the structure of the other example in Embodiment 2
  • (b) is a perspective view explaining the connection state to the cell of the said other example.
  • (C) is a perspective view which shows the structure of the further another example in Embodiment 2.
  • FIG. (A) is a top view which shows the structure of an example in Embodiment 3 of the assembled battery module of this invention
  • (b) is the top view which looked at the assembled battery module from the opposite side to (a).
  • (A) is a top view which shows the structure of the other example in Embodiment 3
  • (b) is the top view which looked at the same assembled battery module from the opposite side to (a).
  • (A) is a perspective view which shows the structure of an example in Embodiment 4 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in the U direction of the connection tool.
  • (A) is a perspective view for explaining connection to the unit cell of the example, (b) is a perspective view showing the connection state, and (c) is seen in the VV direction of the connection state shown in (b). It is sectional drawing.
  • (A) is a perspective view which shows the structure of an example in Embodiment 5 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a).
  • FIG. 1 is a perspective view for explaining connection to the unit cell of the example, (b) is a perspective view showing the connection state, and (c) is viewed in the XX direction of the connection state shown in (b). It is sectional drawing.
  • (A) is a top view which shows the structure of an example in Embodiment 6 of the assembled battery module of this invention, (b) is the top view which looked at the assembled battery module from the opposite side to (a).
  • the “side surface of the electrode” in the “fixed portion” indicates a side surface near the end surface on the positive electrode side in the unit cell.
  • the “side surface of the battery body” in the “fixing portion” indicates a side surface near the end surface on the negative electrode side in the unit cell.
  • the battery connection tool of the present invention may have, for example, a form in which at least two of the fixing portions are provided at intervals on the edge of the electrode contact portion, and the fixing portion is annular. And the form by which the said cyclic
  • the fixing portion can bite into the side surface of the electrode or the side surface of the battery body.
  • the electrode contact portion is plate-shaped and the electrode contact portion is curved in a convex shape toward the electrode side.
  • a protrusion is formed on the electrode contact surface of the electrode contact portion.
  • a conductive resin layer is formed on the electrode contact surface of the electrode contact portion.
  • the battery connection tool of the present invention further includes a voltage monitoring terminal, and the voltage monitoring terminal is connected to the connection terminal.
  • the battery connection tool of the present invention is preferably for secondary battery connection.
  • the battery connection tool of the present invention may include, for example, two electrode mounting portions, and the two electrode mounting portions are connected by the connection terminals.
  • the battery connection tool of the present invention includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and one of the electrode mounting portions is a single cell. It may be an electrode mounting portion (positive electrode mounting portion) that can be mounted on the positive electrode, and the other electrode mounting portion may be an electrode mounting portion (negative electrode mounting portion) that can be mounted on the negative electrode of the unit cell.
  • the battery connection tool of the present invention includes the two electrode attachment portions, the two electrode attachment portions are connected by the connection terminals, and both the electrode attachment portions are attached to the positive electrode of the unit cell.
  • the battery connection tool of the present invention includes the two electrode attachment portions, the two electrode attachment portions are connected by the connection terminal, and both the electrode attachment portions are attached to the negative electrode of the unit cell.
  • the form which is a possible electrode attachment part (attachment part for negative electrodes) may be sufficient.
  • the battery connection tool of the present invention may have a configuration in which the number of the electrode attachment portions is one and the connection terminal is a connection terminal for connection to an external terminal.
  • the battery connection tool of the present invention may have a configuration in which the electrode attachment portion is an electrode attachment portion (a positive electrode attachment portion) that can be attached to the positive electrode of the unit cell.
  • the battery connection tool of the present invention may be configured such that the electrode mounting portion is an electrode mounting portion (a negative electrode mounting portion) that can be mounted on the negative electrode of the unit cell.
  • At least one battery electrode is connectable to an external terminal, and the battery connection tool of the present invention is used for connection to the external terminal.
  • the battery is preferably a secondary battery.
  • Embodiment 1 In FIG. 1, the structure of an example of the battery connection tool of this embodiment is shown.
  • 1A is a perspective view of the battery connection tool of the present embodiment
  • FIG. 1B is a top view of the battery connection tool
  • FIG. 1C is a bottom view of the battery connection tool
  • FIG. It is sectional drawing seen in A direction.
  • the battery connection tool 10 includes a conductive cap 11 and a conductive connection terminal 13.
  • the connection terminal 13 is connected to the cap 11.
  • the cap 11 includes a circular plate 11a and three claws 11b.
  • the three claws 11b are provided at intervals on the edge of the plate 11a.
  • the “cap” in the present embodiment corresponds to an “electrode mounting portion” in the present invention.
  • the “plate” in the present embodiment corresponds to an “electrode contact portion” in the present invention.
  • the “nail” in the present embodiment corresponds to a “fixing portion” in the present invention. The same applies to Embodiments 2 to 6 described later.
  • FIG. 2 shows the connection of the battery connection tool of this embodiment to the electrode of the unit cell.
  • (a) to (c) show the connection of the battery connection tool of this embodiment to the negative electrode of the unit cell.
  • C) is a cross-sectional view of the connection state shown in (b) as seen in the BB direction.
  • (D) to (f) show the connection of the battery connection tool of the present embodiment to the positive electrode of the unit cell.
  • (F) is a cross-sectional view seen in the CC direction of the connected state shown in (e).
  • the cap is, for example, a cap having a size that can be put on the negative electrode.
  • the battery connection tool 10 and the cylindrical cell 21 are prepared.
  • the cap 11 is positioned above the unit cell 21 so that the center of the plate 11a and the center of the negative electrode 22 are aligned using a jig or tool (not shown) that can attract or hold the cap 11 with a magnet.
  • the negative electrode 22 is inserted between the three claws 11b, and the cap 11 is placed on the negative electrode 22 of the unit cell 21.
  • the cap may be covered with the negative electrode of the unit cell while applying pressure.
  • the plate 11a which is an electrode contact part is arrange
  • fixed part is arrange
  • the cap is, for example, a cap having a size that can be put on the positive electrode protruding from the end of the unit cell.
  • the battery connection tool 10 and the cylindrical cell 21 are prepared.
  • the cap 11 is positioned above the unit cell 21 so that the center of the plate 11a and the center of the positive electrode 23 are aligned using a jig or tool (not shown) that can attract or hold the cap 11 with a magnet.
  • the positive electrode 23 is inserted between the three claws 11 b and the cap 11 is placed on the positive electrode 23 of the unit cell 21.
  • the plate 11a which is an electrode contact part is arrange
  • claw 11b which is a fixing
  • the battery connection tool of this embodiment can be electrically connected to the electrode of the cylindrical unit cell, and using the claw that is the fixing portion, The battery connection tool of this embodiment can be physically connected to the electrode of a cylindrical unit cell. For this reason, for example, when welding such as resistance welding is used to connect the cell to the electrode, the problem of stress concentration due to vibration or breakage between the electrode and the connection terminal due to metal fatigue is suppressed. be able to. As a result, in the battery connection tool of this embodiment, it is possible to prevent the occurrence of poor connection between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and the assembled battery module is configured in combination with the single cell. At this time, the reliability and stability of each electrical connection can be maintained.
  • the battery connection tool of the present embodiment good connection is possible without electrical or physical connection to the electrode of the cylindrical unit cell, for example, by welding such as resistance welding. Therefore, the following excellent effects can be obtained. That is, first, there is no connection variation that may occur when connecting by welding. As a result, the connection reliability is high and the connection quality is stable. Moreover, the stress by the heat which arises when welding is not applied to each cell. As a result, it is possible to avoid a decrease in the life of each unit cell due to thermal stress. Moreover, since the severe condition of welding is not added to a single battery etc., it is not influenced by the quality of the welding connection by the wear of the welding rod used in the case of resistance welding, for example.
  • the connection by welding is not performed, the generation of rust on the electrode surface can be suppressed.
  • the assembled battery module after use can be safely disassembled, the cost for resource recycling can be suppressed.
  • special welding equipment such as resistance welding and laser welding is not required. As a result, the assembled battery module can be manufactured at low cost.
  • the claw may be caulked and a part of the claw may be bitten into the side surface of the electrode or the side surface of the battery body.
  • the caulking jig (not shown) with the cap 11 placed on the negative electrode 22 of the unit cell 21.
  • a desired position of the claw 11b is caulked in a line shape (caulking portion 24), so that a part of the claw 11b as a fixing portion is bitten into the side surface of the battery body (negative electrode 22).
  • the cap 11 can be attached to the negative electrode 22 of the unit cell 21.
  • the battery connection tool of the present embodiment can be physically and firmly connected to the negative electrode of the cylindrical unit cell.
  • the cap 11 is placed on the positive electrode 23 of the unit cell 21 and a caulking jig (not shown) is used, as shown in FIGS. 2 (e) and 2 (f).
  • a desired position of the claw 11b is caulked in a line (caulking part 24), and a part of the claw 11b as a fixing part is bitten into the side surface of the electrode (positive electrode 23).
  • the cap 11 can be attached to the positive electrode 23 of the unit cell 21.
  • the battery connection tool of the present embodiment can be physically and firmly connected to the positive electrode of the cylindrical unit cell.
  • the claws are caulked so that a part of the claws bites into the side surface of the electrode or the side surface of the battery body. For this reason, the battery connection tool of this embodiment can be physically firmly connected to the electrode of the cylindrical unit cell. As in this embodiment, the physical connection between the battery connection tool and the electrode of the unit cell is performed by mechanical connection, so that the occurrence of connection failure can be further suppressed.
  • each of the claws is caulked in a line shape, but the present invention is not limited to this example.
  • a portion of the claw 11b which is a fixing portion is bitten into the side surface of the battery body (negative electrode) by caulking the claws in a dot shape (caulking portion 25).
  • the cap 11 is firmly fixed to the negative electrode 22 of the unit cell 21 by being crowned, but the present invention is not limited to this example.
  • connection by welding is not performed.
  • this does not limit the combined use of welding in the present invention.
  • the welded portion is physically connected and fixed to the unit cell by the battery connecting tool in addition to the welded portion, so that the welded portion is hardly broken.
  • the welding include resistance welding, laser welding, arc welding, and the like.
  • the unit cell to which the battery connection tool of the present invention is connected is not particularly limited, and examples thereof include a primary battery and a secondary battery. Among these, a secondary battery is preferable. Examples of the secondary battery include a lithium ion battery, a nickel cadmium storage battery, and a nickel hydrogen battery. Among these, a lithium ion battery is particularly preferable.
  • the battery connection tool of the present embodiment can be suitably used, for example, for connecting an externally added input terminal or output terminal (external terminal) in a battery module and a unit cell connected to the external terminal.
  • the battery connection tool of the present embodiment is connected to the single cell by the cap, and is connected to the external terminal by the connection terminal. That is, the connection terminal is used as a connection terminal for connection to the external terminal.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the battery connection tool of the present embodiment includes the cap 11 and the connection terminal 13.
  • the cap 11 includes a plate 11a and three claws 11b.
  • the cap 11 can have any appropriate size or shape depending on the size or shape of the electrode of the unit cell connected thereto.
  • the formation material of the cap 11 should just have electroconductivity, for example, is the same as the formation material of the electrode of a cell.
  • examples of the forming material include iron, which can be nickel-plated, tin-plated, and zinc-plated, which is a rust-proofing process.
  • examples of the forming material include phosphor bronze, brass, red copper, hard copper, nickel, and aluminum from the viewpoint of fitting strength.
  • the shape of the plate 11a is a circle.
  • the present invention is not limited to this example.
  • it may be a rectangle such as a square or a rectangle, a polygon such as a hexagon, or a combination of these.
  • the size of the plate 11a is, for example, equal to the size of the electrode surface of the unit cell, or larger than the plate thickness of the cap.
  • the thickness of the plate 11a is not particularly limited.
  • a conductive resin layer with high electrical conductivity may be formed on the electrode contact surface of the plate 11a in order to reduce electrical contact resistance.
  • the contact area between the plate and the battery can be increased, so that connection with less electrical resistance is possible.
  • the material for forming the conductive resin layer include PTC (Positive Temperature Coefficient), silver paste, aluminum paste, nickel paste, and carbon kneaded resin.
  • a heat dissipation promotion layer may be formed.
  • the material for forming the heat dissipation promoting layer include high thermal conductive resin, metal paste, and heat dissipation silicone grease.
  • these layers may be used alone or in combination of two or more.
  • the thickness of these layers should just be the range which does not inhibit an electrical connection.
  • these layers can be formed by applying the above-described forming material to, for example, the electrode contact surface of the plate.
  • a rust prevention layer may be formed around a welding part after welding. Examples of the material for forming the rust preventive layer include a rust preventive agent and an antioxidant.
  • the welded portion can be rust-proofed if it is a conductive material.
  • the present invention is not limited to this example.
  • the number of the nails may be at least two, for example, two, four, five or six, or more.
  • the size of the claw 11b is, for example, a size that can sufficiently hold the electrode when the cap is connected to the electrode of the unit cell.
  • claw is not limited to this example, According to the shape etc. of the electrode to connect, it can be set as various shapes. For example, in the case where an exhaust port is provided in the electrode, for example, a return protrusion may be provided at the tip of the claw so as to be hooked on the exhaust port.
  • connection terminal 13 is the same as that of the cap 11, for example.
  • the length of the connection terminal 13 is not particularly limited, and can be an arbitrary length depending on the application of the battery connection tool of the present embodiment.
  • the connection terminal is a voltage monitoring instrument or a voltage data processing device (voltage monitoring circuit). ) May be used.
  • a voltage monitoring terminal may be connected to the connection terminal.
  • the battery connection tool of this embodiment can be connected to a voltage monitoring measuring instrument or a voltage data processing device.
  • the voltage monitoring terminal may be, for example, a terminal branched from the connection terminal.
  • the connection terminal may also serve as the voltage monitoring terminal. Details of the voltage connection terminal will be described later.
  • the battery connection tool of the present embodiment can be suitably used, for example, for connecting an externally added input terminal or output terminal (external terminal) in a battery module and a unit cell connected to the external terminal.
  • the battery connection tool of the present embodiment is connected to the single cell by the cap, and is connected to the external terminal by the connection terminal. That is, the connection terminal is used as a connection terminal for connection to the external terminal.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the battery connection tool of the present embodiment can be manufactured by, for example, integrally molding a plate of a material that forms a cap and a connection terminal by press punching.
  • the battery connection tool of the present embodiment can be manufactured by wire cutting, cutting a plate of material into a predetermined size, and bending it with a jig. Simultaneously with the bending process, the connection tool of this embodiment can be attached to the battery.
  • the method for manufacturing the battery connection tool of the present embodiment is not limited to this example.
  • the fixing portion is three claws, but the present invention is not limited to this example.
  • the one fixing portion may be provided in an annular shape around the entire periphery of the edge portion of the electrode contact portion.
  • FIG. 3 shows a configuration of an example of a battery connection tool in which the one fixing portion is provided in an annular shape around the entire periphery of the edge portion of the electrode contact portion. 3, (a) is a perspective view of the battery connection tool, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is a DD direction of the battery connection tool shown in (a).
  • FIG. FIG. 4 shows the connection of the battery connection tool to the cell electrode.
  • (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view of the connected state shown in (b) as viewed in the EE direction.
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view of the connection state shown in (e) as viewed in the direction FF.
  • the conductive cap 31 includes a circular plate 11 a and a single skirt 31 b that is a fixing portion.
  • the skirt 31b is provided in an annular shape around the entire periphery of the edge of the plate 11a.
  • Other configurations are the same as those of the battery connection tool 10 described above.
  • a caulking jig (not shown) is used to caulk the entire circumference of the skirt 31b as a fixing part (the caulking part in FIGS. 4B and 4C). 44) A part of the skirt 31b is bitten into the side surface of the battery main body (negative electrode 22). In this way, the cap 31 is attached to the negative electrode 22 of the unit cell 21. Further, by caulking the entire circumference of the skirt 31b as a fixing portion (caulking portion 44 in FIGS. 4 (e) and 4 (f)), a part of the skirt 31b is bitten into the side surface of the electrode (positive electrode 23). . In this way, the cap 31 is attached to the positive electrode 23 of the unit cell 21.
  • the battery connection tool 30 is connected to the electrodes (negative electrode and positive electrode) of the unit cell 21 in the same manner as the battery connection tool 10 described above.
  • the connection strength can be improved as compared with the battery connection tool 10 described above.
  • FIG. 5 shows a configuration of an example of a battery connection tool in which the slit is formed.
  • FIG. 6 shows the connection of the battery connection tool to the electrode of the unit cell.
  • (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view in the HH direction of the connected state shown in (b).
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view of the connected state shown in (e) as seen in the II direction.
  • a slit 54 having a long hole is formed near the center of the surface of the plate 11a in a direction orthogonal to the direction in which the connection terminals 13 are connected.
  • the direction of the slit is not particularly limited, and may be, for example, a direction parallel to the direction in which the connection terminal is connected, or is inclined at a desired angle from the direction in which the connection terminal is connected. Orientation may be used.
  • the slit may be a long hole formed in the plate as in the present embodiment, or may be a notch formed from an end of the plate.
  • the length of the slit may be any length that can concentrate the welding current in resistance welding described later.
  • variety and formation location of the said slit are not restrict
  • the connection strength by resistance welding is improved and the reliability of connection in resistance welding is improved. Can be improved.
  • the negative electrode 22 or the positive electrode 23 is first inserted between the three claws 11 b, and the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21.
  • two electrodes (welding rod, not shown) for welding are brought into contact with the plate 11a with the slit 54 interposed therebetween. In this state, resistance welding is performed by passing a welding current between the electrodes (welded portion 61 in FIG. 6C or FIG. 6F).
  • the battery connection tool 50 is connected to the negative electrode and the positive electrode of the unit cell in the same manner as the battery connection tool 10 described above.
  • both the welding rods are brought into contact with the plate 11a with the slit 54 interposed therebetween. Therefore, among the welding currents flowing between the electrodes, the welding current flowing on the surface of the plate 11a is suppressed.
  • the diffusion of the welding current can be suppressed, it is easy to control the welding current amount set during resistance welding. For this reason, for example, damage to the inside of the battery and the electrode surface due to excessive welding current can be reduced, and reduction in connection strength due to insufficient welding current can be suppressed.
  • FIG. 7A to FIG. 7D show a configuration of an example of a battery connection tool on which the projection is formed.
  • (A) is a perspective view of the battery connection tool
  • (b) is a top view of the battery connection tool
  • (c) is a bottom view of the battery connection tool
  • (d) is a cross-sectional view of the battery connection tool shown in FIG. It is.
  • FIG. 8 shows the connection of this battery connection tool to the electrode of the unit cell.
  • (a) to (c) show connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view in the KK direction of the connected state shown in (b).
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view in the LL direction of the connected state shown in (e).
  • one projection (protrusion) 75 is formed on each side of the slit 54 formed near the center of the surface of the plate 11a.
  • Other configurations are the same as those of the battery connection tool 50 described above.
  • the number of projections is not particularly limited, and for example, two projections 75 may be formed on both sides of the slit 54 as shown in FIG.
  • the connection strength by resistance welding is further improved, and the connection reliability in resistance welding is improved.
  • the negative electrode 22 or the positive electrode 23 is first inserted between the three claws 11 b, and the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21.
  • two electrodes for welding welding rod, not shown
  • resistance welding is performed by flowing a welding current between the two welding rods (welded portion 81 in FIGS. 8C and 8F).
  • the battery connection tool 70 is connected to the negative electrode and the positive electrode of the unit cell in the same manner as the battery connection tool 50 described above.
  • the welding current sent between the said welding rods can be concentrated more. For this reason, for example, damage to the inside of the battery and the electrode surface due to excessive welding current can be further reduced, and a decrease in connection strength due to insufficient welding current can be further suppressed.
  • FIG. 9A shows a configuration of an example of a battery connection tool on which the protrusion is formed.
  • 9A (a) is a perspective view of the battery connection tool, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is a MM direction of the battery connection tool shown in (a).
  • FIG. FIG. 10 shows the connection of the battery connection tool to the cell electrode.
  • (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view of the connection state shown in (b) as viewed in the NN direction.
  • D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view of the connected state shown in (e) as viewed in the OO direction.
  • needle-like protrusions 96 are formed on the electrode contact surface 11A of the plate 11a.
  • Other configurations are the same as those of the battery connection tool 10 described above.
  • the acicular protrusion 96 can be formed, for example, by performing a burring process on the plate 11a.
  • the needle-like protrusion 96 may be, for example, a protrusion having a shape (burring penetrating shape) formed by penetrating the plate 11a by the burring process.
  • the cap 11 when the battery connection tool 90 is connected to the single cell 21, the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the single cell 21 while applying pressure, so that FIG. As shown in FIG. 10C, or FIG. 10E and FIG. 10F, the needle-like protrusion 96 can be pierced into the negative electrode 22 or the positive electrode 23. Except for these, the battery connection tool 90 is connected to the electrode of the unit cell in the same manner as the battery connection tool 10 described above. Thereby, the connection of the cap 11 and an electrode (the negative electrode 22 or the positive electrode 23) can be made more reliable. Moreover, since a contact area with the electrode of a cell can be increased, for example, contact resistance can be reduced. When the contact resistance is increased, heat is generated and the battery is deteriorated. Therefore, it is preferable that the contact resistance can be reduced.
  • the needle-like protrusion 96 is formed on the electrode contact surface 11A of the plate 11a, but the present invention is not limited to this example. Any protrusion may be used as long as the above-described effect can be obtained.
  • the protrusions 96B are examples. Also, as shown in FIG.
  • the electrode contact portion may have a plate shape, and the electrode contact portion may be convexly curved toward the electrode side of the unit cell.
  • FIG. 11 the structure of an example of the battery connection tool in which the said electrode contact part is curving convexly toward the electrode side of a cell is shown.
  • 11A is a perspective view of the battery connection tool
  • FIG. 11B is a top view of the battery connection tool
  • FIG. 11C is a bottom view of the battery connection tool
  • FIG. FIG. FIG. 12 shows the connection of the battery connection tool to the electrode of the unit cell.
  • (a) to (c) show connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view in the QQ direction of the connected state shown in (b).
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view seen in the RR direction of the connected state shown in (e).
  • the conductive cap 111 includes a plate-like circular plate 111 a and three claws 11 b that are fixing portions.
  • the plate 111a is curved toward the electrode side of the unit cell (the electrode contact surface 111A side of the plate 111a).
  • Other configurations are the same as those of the battery connection tool 10 described above.
  • the connection of the battery connection tool to the cell electrode will be described.
  • the negative electrode 22 or the positive electrode 23 is inserted between the three claws 11b, and the cap 111 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21 while applying pressure.
  • a desired position of the claw 11b is caulked in a line using a caulking jig (not shown) (FIGS. 12B and 12C, or 12E).
  • the caulking portion 24 in FIG. 12 (f) and a part of the claw 11b which is the fixing portion is bitten into the side surface of the battery body (negative electrode 22) or the side surface of the electrode (positive electrode 23).
  • the plate 111a which was curving to the electrode contact surface 111A side, It comes into contact with the negative electrode 22 or the positive electrode 23 of the unit cell 21 and becomes flat. Except for these, the battery connection tool 110 is connected to the electrode of the unit cell in the same manner as the battery connection tool 10 described above. For this reason, as shown in FIG.12 (c) and FIG.12 (f), force is applied toward the electrode of the cell 21 from the plate 111a (downward arrow). As a result, the connection between the cap 111 and the electrode (the negative electrode 22 or the positive electrode 23) can be made more reliable.
  • the claw or the skirt is caulked in order to physically and firmly connect the battery connection tool to the electrode of the unit cell, but the present invention is not limited to this example.
  • the side surface portion of the electrode of the unit cell when threaded, it corresponds to the surface on the electrode contact side of the fixing portion such as the nail or the skirt of the battery connection tool of the present invention. Screw processing may be given.
  • the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by screwing.
  • the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by fitting with the snap structure. If they can be fitted with a snap structure, they can be firmly fixed without performing a caulking step, which is preferable in terms of work efficiency and is suitable for mass production.
  • the electrode contact surface of the electrode contact portion of the battery connection tool of the present invention A hook of a hook-and-loop fastener that is electrically conductive may be formed.
  • the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by bonding an electrically conductive hook-and-loop fastener.
  • the battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, one of the electrode mounting portions is the positive electrode mounting portion, and the other The electrode mounting portion is a negative electrode mounting portion.
  • FIG. 13 shows an example of the configuration of the battery connection tool of the present embodiment.
  • (a) is a perspective view of the battery connection tool of this embodiment
  • (b) is a top view thereof
  • (c) is a bottom view thereof
  • (d) is an S-- of the battery connection tool shown in (a). It is sectional drawing seen in the S direction.
  • the battery connection tool 130 includes a positive electrode cap 131, a negative electrode cap 132, and a connection terminal 133.
  • the connection terminal 133 is connected to the positive electrode cap 131 and the negative electrode cap 132.
  • the positive electrode cap 131 includes a circular plate 131a and three claws 131b.
  • the three claws 131b are provided at the edge of the plate 131a with a space between each other.
  • the negative electrode cap 132 includes a circular plate 132a and three claws 132b.
  • the three claws 132b are provided at intervals on the edge of the plate 132a.
  • an elongated slit 134a is formed in a direction orthogonal to the direction in which the connection terminal 133 is connected.
  • an elongated slit 134b is formed in a direction orthogonal to the direction in which the connection terminal 133 is connected.
  • the “positive electrode cap” in the present embodiment corresponds to the “positive electrode mounting portion” in the present invention.
  • the “negative electrode cap” in the present embodiment corresponds to the “negative electrode mounting portion” in the present invention.
  • the battery connection tool of this embodiment may include, for example, a connection terminal for connecting to the external terminal described above.
  • FIG. 14C is a cross-sectional view of the connection state shown in FIG. 14B viewed in the TT direction.
  • a battery connection tool 130 and two cylindrical unit cells 141a and 141b are prepared.
  • the center of the plate 131a and the center of the positive electrode 143a of one unit cell 141a are aligned using a jig or tool (not shown) that can attract or hold the positive electrode cap 131 and the negative electrode cap 132 with a magnet.
  • the positive electrode cap 131 is positioned above the unit cell 141a.
  • the negative electrode cap 132 is positioned above the unit cell 141b so that the center of the plate 132a and the center of the negative unit 142b of the other unit cell 141b are aligned.
  • the positive electrode cap 131 and the negative electrode cap 132 are moved downward.
  • the positive electrode 143a of the single cell 141a is fitted between the three claws 131b of the positive electrode cap 131, and the positive electrode cap 131 is placed over the positive electrode 143a of the single cell 141a.
  • the plate 131a which is an electrode contact part is arrange
  • the negative electrode 142b of the single cell 141b is fitted between the three claws 132b of the negative electrode cap 132, and the negative electrode cap 132 is placed over the negative electrode 142b of the single cell 141b.
  • the plate 132a which is an electrode contact part is arrange
  • a fixed portion is obtained by caulking a desired position of the claw 132b in a line using a caulking jig (not shown) (caulking portion 144b in FIGS. 14B and 14C).
  • a part of the claw 132b is bitten into the side surface of the battery body (negative electrode 142b) of the unit cell 141b.
  • the negative electrode cap 132 is attached to the negative electrode 142b of the unit cell 141b.
  • the claw 132b which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 142b) of the unit cell 141b, so that the battery connection tool of this embodiment can be used as the negative electrode of the other cylindrical unit cell.
  • the method for caulking the claws 131b and 132b is the same as the method shown in the first embodiment, for example.
  • the positive electrode cap 131 and the positive electrode 143a of the unit cell 141a are further welded and connected by resistance welding with the slit 134a interposed therebetween (welded portion 145a in FIG. 14C).
  • the negative electrode cap 132 and the negative electrode 142b of the unit cell 141b are welded and connected by resistance welding with the slit 134b interposed therebetween (welded portion 145b in FIG. 14C).
  • welding connection such as resistance welding is not necessarily performed.
  • the battery connection tool of this embodiment is electrically connected to the positive electrode of one unit cell and the negative electrode of the other unit cell in two cylindrical unit cells, and is physically Can be firmly connected.
  • the two unit cells 141a and the unit cells 141b are connected in series by the battery connection tool of the present embodiment, and are physically firmly connected. Therefore, the battery connection tool of this embodiment can be suitably used, for example, for series connection of the positive and negative electrodes of two unit cells in the assembled battery module.
  • the battery connection tool of this embodiment can be suitably used, for example, for series connection of the positive and negative electrodes of two unit cells in the assembled battery module.
  • the battery connection tool of the present invention is not limited or limited by the above description.
  • both the positive electrode cap 131 and the negative electrode cap 132 are simultaneously (collectively) electrically and physically connected to the electrodes of each unit cell. It is not limited to.
  • the positive electrode cap 131 and the negative electrode cap 132 may be electrically and physically connected to the electrodes of each unit cell sequentially. The same applies to Embodiments 4 and 5 described later.
  • the battery connection tool of the present embodiment may further include a voltage monitoring terminal, for example.
  • FIG. 15A shows a configuration of an example of a battery connection tool including the voltage monitoring terminal.
  • the battery connection tool 150 includes a voltage monitoring terminal 158.
  • the voltage monitoring terminal 158 is connected to a connection terminal 153 that connects the positive electrode cap 131 and the negative electrode cap 132.
  • Other configurations are the same as those of the battery connecting tool 130 described above.
  • the battery connection tool 150 can be connected to two single cells as shown in FIG. 15B, for example, by the same method as the battery connection tool 130 described above. Further, the voltage monitoring terminal 158 can be connected to a voltage monitoring measuring instrument or a voltage data processing device (not shown). Thereby, the voltage applied between the positive electrode 143a of the single cell 141a and the negative electrode 142b of the single cell 141b can be monitored. The voltage monitoring is effective for preventing overcharging at the time of charging and overdischarging at the time of discharging of each unit cell constituting the assembled battery module, and keeping the voltage of each unit cell at the same level. By monitoring the voltage, it is possible to average the characteristics of the single cells constituting the assembled battery module so that a large load is not applied to some of the batteries. For this reason, while being able to stabilize and safety
  • the method for connecting the voltage monitoring terminal to the voltage monitoring measuring instrument or the voltage data processing device is not particularly limited.
  • the voltage monitoring terminal is connected to the voltage monitoring measuring instrument or the voltage data processing device (voltage It may be connected to the connection terminal of the monitoring circuit).
  • the voltage monitoring terminal has a structure suitable for caulking and connecting to the voltage monitoring measuring instrument or the connection terminal of the voltage data processing device. Or you may connect by soldering, resistance welding, arc welding, etc. If it does in this way, the voltage monitoring terminal and the voltage monitoring measuring instrument or the voltage data processing device can be connected easily and reliably.
  • connection terminal may be branched into a plurality of parts on the way, and the branched connection terminal may be connected to the electrode mounting portion.
  • FIG. 15C shows a configuration of an example of a battery connection tool including the branched connection terminal.
  • the battery connection tool 150c includes a positive electrode cap 131, a negative electrode cap 132, and a connection terminal 133a.
  • One end of the connection terminal 133a branches into two connection terminals 133b and 133c.
  • the connection terminals 133b and 133c are connected to the positive electrode cap 131.
  • the other end of the connection terminal 133a is connected to the negative electrode cap 132.
  • Other configurations are the same as those of the battery connecting tool 130 described above.
  • connection terminal 133a has two branched connection terminals 133b and 133c. Therefore, since it is connected to the positive electrode cap 131, the stress generated between the electrode and the connection terminal due to vibration or heat generated during charging and discharging is easily dispersed. Thereby, generation
  • connection terminal 133a one end side of the connection terminal 133a is branched into two, but the present invention is not limited to this example.
  • both ends of the connection terminal may be branched into a plurality.
  • the assembled battery module of the present embodiment is characterized in that the battery connection tool shown in the first and second embodiments is used to connect two or more batteries.
  • FIG. 16 shows an example of the configuration of the assembled battery module of the present embodiment.
  • (a) is a plan view of the assembled battery module of the present embodiment
  • (b) is a plan view of the assembled battery module as viewed from the side opposite to (a).
  • the assembled battery module 160 includes five unit cells 161a, 161b, 161c, 161d and 161e, two battery connection tools 10a and 10b, and four battery connection tools 130a and 130b. , 130c and 130d.
  • Battery connection tools 10a and 10b are the battery connection tools shown in the first embodiment.
  • Battery connection tools 130a, 130b, 130c and 130d are the battery connection tools shown in the second embodiment. In order to make the drawing easy to see, in FIG.
  • each battery connection tool connected to the electrode visible on the side of FIG. 16B is not shown.
  • illustration is abbreviate
  • the five cells are arranged in a staggered manner.
  • the five cells are fixed by a frame (holder) not shown so as not to move.
  • the positive electrode 163a of the unit cell 161a and the negative electrode 162b of the unit cell 161b are connected in series by the battery connection tool 130a.
  • the positive electrode 163b of the unit cell 161b and the negative electrode 162c of the unit cell 161c are connected in series by the battery connection tool 130b.
  • the positive electrode 163c of the unit cell 161c and the negative electrode 162d of the unit cell 161d are connected in series by the battery connection tool 130c.
  • the positive electrode 163d of the unit cell 161d and the negative electrode 162e of the unit cell 161e are connected in series by the battery connection tool 130d.
  • the battery connection tool 10a is connected to the negative electrode 162a of the unit cell 161a corresponding to one end of the assembled battery module 160.
  • the battery connection tool 10b is connected to the positive electrode 163e of the unit cell 161e corresponding to the other end of the assembled battery module 160.
  • the method of connecting each cell and each battery connecting tool is the same as the method shown in the first and second embodiments, for example.
  • the negative electrode 162a of the unit cell 161a can be connected to an externally added output terminal (external terminal) using, for example, the connection terminal 13a of the battery connection tool 10a.
  • the positive electrode 163e of the unit cell 161e can be connected to an externally added input terminal (external terminal) using, for example, the connection terminal 13b of the battery connection tool 10b.
  • the electrodes of the unit cells and the unit cell and the external terminal are excellent in vibration resistance, and generate heat during charging and discharging. It is possible to make an electrical connection very well without being affected by the above. As a result, in the assembled battery module of this embodiment, the reliability and stability of each electrical connection between the electrodes of the unit cells and between the unit cells and the external terminals are maintained.
  • the unit cell is not particularly limited, and examples thereof include a primary battery and a secondary battery.
  • a secondary battery is preferable.
  • the secondary battery include a lithium ion battery, a nickel cadmium storage battery, and a nickel hydrogen battery.
  • a lithium ion battery is particularly preferable.
  • this assembled battery module 170 includes six unit cells 171a, 171b, 171c, 171d, 171e and 171f, two battery connection tools 10c and 10d, and five battery connection tools 130e. , 130f, 130g, 130h and 130i.
  • Battery connection tools 10c and 10d are the battery connection tools shown in the first embodiment.
  • Battery connection tools 130e, 130f, 130g, 130h and 130i are the battery connection tools shown in the second embodiment.
  • the six single cells have three single cells arranged in a straight line, and two of these are arranged in parallel.
  • the six cells are fixed by a frame (holder) not shown so as not to float.
  • the positive electrode 173a of the unit cell 171a and the negative electrode 172b of the unit cell 171b are connected in series by the battery connection tool 130e.
  • the positive electrode 173b of the unit cell 171b and the negative electrode 172c of the unit cell 171c are connected in series by the battery connection tool 130f.
  • the positive electrode 173c of the unit cell 171c and the negative electrode 172d of the unit cell 171d are connected in series by the battery connection tool 130g.
  • the positive electrode 173d of the unit cell 171d and the negative electrode 172e of the unit cell 171e are connected in series by the battery connection tool 130h.
  • the positive electrode 173e of the single battery 171e and the negative electrode 172f of the single battery 171f are connected in series by the battery connection tool 130i.
  • the battery connection tool 10 c is connected to the negative electrode 172 a of the unit cell 171 a corresponding to one end of the assembled battery module 170.
  • the battery connection tool 10d is connected to the positive electrode 173f of the unit cell 171f which is the other end of the assembled battery module 170.
  • the method of connecting each cell and each battery connecting tool is the same as the method shown in the first and second embodiments, for example.
  • the negative electrode 172a of the unit cell 171a can be connected to an externally added output terminal (external terminal) using, for example, the connection terminal 13c of the battery connection tool 10c.
  • the positive electrode 173f of the unit cell 171f can be connected to an externally added input terminal (external terminal) using, for example, the connection terminal 13d of the battery connection tool 10d.
  • the cap portions of the battery connection tool connected to the electrodes visible on the side of FIG. 17B are not shown.
  • each cap part of the battery connection tool connected to the electrode visible to the Fig.17 (a) side is abbreviate
  • the battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and both the electrode mounting portions are positive electrode mounting portions. To do.
  • FIG. 18 shows an example of the configuration of the battery connection tool of the present embodiment.
  • 18A is a perspective view of the battery connection tool of this embodiment
  • FIG. 18B is a top view of the battery connection tool
  • FIG. 18C is a bottom view of the battery connection tool
  • FIG. It is sectional drawing seen in the U direction.
  • the battery connection tool 180 includes a positive electrode cap 181, a positive electrode cap 182, and a connection terminal 183 a.
  • the connection terminal 183 a is connected to the positive electrode cap 181 and the positive electrode cap 182.
  • the positive electrode cap 181 includes a circular plate 181a and three claws 181b.
  • the three claws 181b are provided at intervals on the edge of the plate 181a.
  • the positive electrode cap 182 includes a circular plate 182a and three claws 182b.
  • the three claws 182b are provided at intervals on the edge of the plate 182a.
  • an elongated slit 184a is formed in a direction orthogonal to the direction in which the connection terminal 183a is connected.
  • an elongated slit 184b is formed in a direction orthogonal to the direction in which the connection terminal 183a is connected.
  • FIG. 19C is a cross-sectional view in the VV direction of the connected state shown in FIG.
  • a battery connection tool 180 and two cylindrical unit cells 191a and 191b are prepared.
  • a jig or tool that can attract or hold the positive electrode caps 181 and 182 with a magnet
  • the center of the plate 181a and the center of the positive electrode 193a of one unit cell 191a are aligned.
  • the positive electrode cap 181 is positioned above the unit cell 191a.
  • the positive electrode cap 182 is positioned above the unit cell 191b so that the center of the plate 182a and the center of the cathode 193b of the other unit cell 191b are aligned. From this state, the positive electrode caps 181 and 182 are moved downward.
  • the positive electrode 193a of the cell 191a is fitted between the three claws 181b of the positive electrode cap 181 and the positive electrode cap 181 is placed over the positive electrode 193a of the cell 191a.
  • the plate 181a which is an electrode contact part is arrange
  • fixed part is arrange
  • the positive electrode 193b of the single cell 191b is fitted between the three claws 182b of the positive electrode cap 182, and the positive electrode cap 182 is placed over the positive electrode 193b of the single cell 191b.
  • the plate 182a which is an electrode contact part is arrange
  • fixed part is arrange
  • a desired position of the claw 181b is caulked in a line using a caulking jig (not shown) (caulking portion 194a in FIGS. 19B and 19C), A part of the claw 181b, which is a fixed part, is bitten into the side surface of the electrode (positive electrode 193a) of the unit cell 191a.
  • the positive electrode cap 181 is attached to the positive electrode 193a of the unit cell 191a.
  • the claw 181b which is the fixing portion, is arranged on the side surface of the electrode (positive electrode 193a) of the unit cell 191a, so that the battery connection tool of this embodiment is physically applied to the positive electrode of one cylindrical unit cell. Can be firmly connected.
  • the desired position of the claw 182b is caulked in a line (caulking portion 194b in FIGS. 19B and 19C), thereby fixing the fixing portion.
  • a part of the claw 182b is bitten into the side surface of the electrode (positive electrode 193b) of the unit cell 191b.
  • the positive electrode cap 182 is attached to the positive electrode 193b of the unit cell 191b.
  • the claw 182b which is a fixing portion, is arranged on the side surface of the electrode (positive electrode 193b) of the unit cell 191b, so that the battery connection tool of this embodiment is physically connected to the positive electrode of the other cylindrical unit cell.
  • the method for caulking the claws 181b and 182b is the same as the method shown in the first embodiment, for example.
  • the positive electrode cap 181 and the positive electrode 193a of the unit cell 191a are further weld-connected by resistance welding with the slit 184a interposed therebetween (welded portion 195a in FIG. 19C).
  • the positive electrode cap 182 and the positive electrode 193b of the unit cell 191b are welded and connected by resistance welding with the slit 184b interposed therebetween (welded portion 195b in FIG. 19C).
  • welding connection such as resistance welding is not necessarily performed.
  • the battery connection tool of this embodiment can be electrically connected to both positive electrodes in the two cylindrical unit cells, and can be physically firmly connected.
  • the positive electrode 193a of the single battery 191a and the positive electrode 193b of the single battery 191b are connected in parallel by the battery connection tool of the present embodiment and are physically firmly connected. Therefore, the battery connection tool of this embodiment can be suitably used for, for example, parallel connection of the positive electrodes of two unit cells in an assembled battery module.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and both the electrode mounting portions are negative electrode mounting portions. To do.
  • FIG. 20 shows a configuration of an example of the battery connection tool of the present embodiment.
  • the battery connection tool 200 includes a negative electrode cap 201, a negative electrode cap 202, and a connection terminal 203a.
  • the connection terminal 203 a is connected to the negative electrode cap 201 and the negative electrode cap 202.
  • the negative electrode cap 201 includes a circular plate 201a and three claws 201b.
  • the three claws 201b are provided at the edge of the plate 201a with a space between each other.
  • the negative electrode cap 202 includes a circular plate 202a and three claws 202b.
  • the three claws 201b are provided at the edge of the plate 201a with a space between each other.
  • an elongated slit 204a is formed in a direction orthogonal to the direction in which the connection terminal 203a is connected.
  • an elongated slit 204b is formed in a direction orthogonal to the direction in which the connection terminal 203a is connected.
  • FIG. 21C is a cross-sectional view of the connection state shown in FIG. 21B viewed in the XX direction.
  • a battery connecting tool 200 and two cylindrical unit cells 211a and 211b are prepared.
  • a jig or tool that can attract or hold the negative electrode caps 201 and 202 with a magnet
  • the center of the plate 201a and the center of the negative electrode 212a of one unit cell 211a are aligned.
  • the negative electrode cap 201 is positioned above the unit cell 211a.
  • the negative electrode cap 202 is positioned above the unit cell 211b so that the center of the plate 202a and the center of the anode 212b of the other unit cell 211b are aligned. From this state, the negative electrode caps 201 and 202 are moved downward.
  • the negative electrode 212a of the unit cell 211a is inserted between the three claws 201b of the negative electrode cap 201, and the negative electrode cap 201 is placed over the negative electrode 212a of the unit cell 211a.
  • the plate 201a which is an electrode contact part is arrange
  • fixed part is arrange
  • the negative electrode 212b of the cell 211b is inserted between the three claws 202b of the negative electrode cap 202, and the negative electrode cap 202 is placed over the negative electrode 212b of the cell 211b.
  • the plate 202a which is an electrode contact part is arrange
  • fixed part is arrange
  • a desired position of the claw 201b is caulked in a line using a caulking jig (not shown) (caulking portion 214a in FIGS. 21 (b) and 21 (c)), A part of the claw 201b, which is a fixing portion, is bitten into the side surface of the battery body (negative electrode 212a) of the single battery 211a.
  • the negative electrode cap 201 is attached to the negative electrode 212a of the unit cell 211a.
  • the claw 201b which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 212a) of the unit cell 211a, so that the battery connection tool of this embodiment can be used as the negative electrode of one cylindrical unit cell.
  • the desired position of the claw 202b is caulked in a line (the caulking portion 214b in FIGS. 21B and 21C), thereby fixing the fixing portion.
  • a part of the claw 202b is bitten into the side surface of the battery body (negative electrode 212b) of the unit cell 211b. In this way, the negative electrode cap 202 is attached to the negative electrode 212b of the unit cell 211b.
  • the claw 202b which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 212b) of the unit cell 211b, so that the battery connection tool of this embodiment can be used as the negative electrode of the other cylindrical unit cell. It can be physically and firmly connected.
  • the method of caulking the claws 201b and 202b is the same as the method shown in the first embodiment, for example.
  • the negative electrode cap 201 and the negative electrode 212a of the cell 211a are further welded and connected by resistance welding with the slit 204a interposed therebetween (welded portion 215a in FIG. 21C).
  • the negative electrode cap 202 and the negative electrode 212b of the unit cell 211b are welded and connected by resistance welding with the slit 204b interposed therebetween (welded portion 215b in FIG. 21C).
  • welding connection such as resistance welding is not necessarily performed.
  • the battery connection tool of this embodiment can be electrically connected to both negative electrodes in the two cylindrical unit cells, and can be physically firmly connected.
  • the negative electrode 212a of the unit cell 211a and the negative electrode 212b of the unit cell 211b are connected in parallel by the battery connection tool of the present embodiment and are physically firmly connected. Therefore, the battery connection tool of the present embodiment can be suitably used, for example, for parallel connection of the negative electrodes of two unit cells in an assembled battery module.
  • the parallel connection of the negative electrodes of two cylindrical unit cells it is possible to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, in combination with the unit cell.
  • the reliability and stability of each electrical connection can be maintained.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the assembled battery module of the present embodiment is characterized in that the battery connection tool shown in the second, fourth, and fifth embodiments is used to connect two or more unit cells.
  • FIG. 22 shows an exemplary configuration of the assembled battery module of the present embodiment.
  • 22A is a plan view of the assembled battery module of the present embodiment
  • FIG. 22B is a plan view of the assembled battery module as viewed from the opposite side to FIG.
  • the assembled battery module 220 includes two assembled battery modules 160a and 160b and battery connecting tools 180 and 200.
  • the two assembled battery modules 160a and 160b are the assembled battery modules shown in the third embodiment (FIG. 16), and are fixed so as not to float by a frame (holder) (not shown).
  • the battery connection tool 180 is the battery connection tool shown in the fourth embodiment (FIG. 18).
  • the battery connection tool 200 is the battery connection tool shown in the fifth embodiment (FIG. 20).
  • FIG. 22A the cap portion of each battery connection tool connected to the electrode visible on the side of FIG. 22B is not shown.
  • FIG. 22B the cap portion of each battery connection tool connected to the electrode visible on the side of FIG. 22A is not shown.
  • the negative electrodes 162a-1 and 162a-2 in the unit cells 161a-1 and 161a-2 of both assembled battery modules are connected in parallel by the battery connecting tool 200 instead of the battery connecting tool 10a in the third embodiment.
  • the positive electrodes 163e-1 and 163e-2 in the unit cells 161e-1 and 161e-2 of both assembled battery modules are connected in parallel by a battery connecting tool 180 instead of the battery connecting tool 10b in the third embodiment.
  • a battery connecting tool 180 instead of the battery connecting tool 10b in the third embodiment.
  • the negative electrodes 162a-1 and 162a-2 in the unit cells 161a-1 and 161a-2 of both battery modules can be connected to an externally added output terminal (external terminal) via the connection terminal of the battery connection tool 200, for example. It is.
  • the positive electrodes 163e-1 and 163e-2 of the unit cells 161e-1 and 161e-2 of both battery modules can be connected to an externally added input terminal (external terminal) via the connection terminal of the battery connection tool 180, for example. It is.
  • the assembled battery module of this embodiment is obtained by electrically connecting two assembled battery modules described in the above-described Embodiment 3 in parallel.
  • the battery connection tool of the present invention can prevent the occurrence of poor connection between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and each electrical connection when configuring the assembled battery module Reliability and stability can be maintained. For this reason, the assembled battery module connected using the battery connection tool of the present invention maintains the reliability and stability of each electrical connection, for example. Therefore, the assembled battery module of the present invention can be used as, for example, an in-vehicle standby power supply, an in-vehicle photovoltaic power storage battery, or the like.
  • output performance with improved current collection efficiency is required, such as a drive power source for electric vehicles / hybrid vehicles, various electrical equipment, electric bicycles, electric motorcycles, industrial machines, robots, etc. Power to the part to be raised.
  • a drive power source for electric vehicles / hybrid vehicles various electrical equipment, electric bicycles, electric motorcycles, industrial machines, robots, etc. Power to the part to be raised.
  • its use is not limited and can be applied to a wide range of fields.

Abstract

L'invention concerne un équipement de connexion de batterie, et un module de batterie assemblée mettant en œuvre celui-ci, permettant d'empêcher l'apparition de défaillances de connexion entre une électrode et une borne de connexion provoquée par une chaleur générée lors de vibrations ou lors de la charge et de la décharge, et conservant les propriétés de fiabilité et de stabilité de chaque connexion électrique dans le cadre de la configuration du module de batterie assemblée. L'équipement de connexion de batterie (10) de l'invention est caractéristique en ce qu'il contient une partie de montage d'électrode (11), et la borne de connexion (13); ladite borne de connexion (13) étant connectée à ladite partie de montage d'électrode (11); et ladite partie de montage d'électrode (11) contenant une partie de contact d'électrode (11a) disposée sur la face supérieure de l'électrode, et des parties de fixation (11b) disposées sur les faces latérales de l'électrode ou sur les faces latérales d'un corps principal de batterie.
PCT/JP2011/055445 2010-03-10 2011-03-09 Équipement de connexion de batterie, et module de batterie assemblée mettant en œuvre celui-ci WO2011111721A1 (fr)

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JP2010053836 2010-03-10

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FR2979472A1 (fr) * 2011-08-29 2013-03-01 Batscap Sa Connecteur dispose entre deux ensembles de stockage d'energie
EP2833432A3 (fr) * 2013-07-31 2015-02-11 Samsung SDI Co., Ltd. Bloc-batteries
JP2015085231A (ja) * 2013-10-29 2015-05-07 ダイキン工業株式会社 活性種生成装置
US9633799B2 (en) 2011-08-29 2017-04-25 Blue Solutions Long-term energy storage assembly comprising an intermediate connection part
CN106910862A (zh) * 2017-02-28 2017-06-30 长沙安靠电源有限公司 插入式电池连接装置
CN107994197A (zh) * 2017-11-24 2018-05-04 晶丰电子封装材料（武汉）有限公司 一种柱式可充电电池与基座的连接结构及连接方法
CN110224100A (zh) * 2019-05-29 2019-09-10 盐城维实新能源科技有限公司 一种大容量式镍氢电池

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JP2002246004A (ja) * 2001-02-21 2002-08-30 Toshiba Battery Co Ltd 電池接続構造体
WO2008147153A1 (fr) * 2007-05-31 2008-12-04 Lg Chem, Ltd. Élément de connexion électrique de type à assemblage et bloc-piles de secours contenant un tel élément
WO2009011540A2 (fr) * 2007-07-16 2009-01-22 Lg Chem, Ltd. Élément de connexion électrique pour batterie d'accumulateur
JP2009080963A (ja) * 2007-09-25 2009-04-16 Gs Yuasa Corporation:Kk 端子間接続構造
JP2010003585A (ja) * 2008-06-20 2010-01-07 Autonetworks Technologies Ltd ジョイント端子及び電池の接続構造

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JP2002246004A (ja) * 2001-02-21 2002-08-30 Toshiba Battery Co Ltd 電池接続構造体
WO2008147153A1 (fr) * 2007-05-31 2008-12-04 Lg Chem, Ltd. Élément de connexion électrique de type à assemblage et bloc-piles de secours contenant un tel élément
WO2009011540A2 (fr) * 2007-07-16 2009-01-22 Lg Chem, Ltd. Élément de connexion électrique pour batterie d'accumulateur
JP2009080963A (ja) * 2007-09-25 2009-04-16 Gs Yuasa Corporation:Kk 端子間接続構造
JP2010003585A (ja) * 2008-06-20 2010-01-07 Autonetworks Technologies Ltd ジョイント端子及び電池の接続構造

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2979472A1 (fr) * 2011-08-29 2013-03-01 Batscap Sa Connecteur dispose entre deux ensembles de stockage d'energie
WO2013030212A1 (fr) * 2011-08-29 2013-03-07 Batscap Couvercle de connexion d'ensembles de stockage d'energie
US9633799B2 (en) 2011-08-29 2017-04-25 Blue Solutions Long-term energy storage assembly comprising an intermediate connection part
US9748047B2 (en) 2011-08-29 2017-08-29 Blue Solutions Connector arranged between two cylindrical energy storage assemblies
US9831046B2 (en) 2011-08-29 2017-11-28 Blue Solutions Cover for connecting energy storage assemblies
EP2833432A3 (fr) * 2013-07-31 2015-02-11 Samsung SDI Co., Ltd. Bloc-batteries
JP2015085231A (ja) * 2013-10-29 2015-05-07 ダイキン工業株式会社 活性種生成装置
CN106910862A (zh) * 2017-02-28 2017-06-30 长沙安靠电源有限公司 插入式电池连接装置
CN107994197A (zh) * 2017-11-24 2018-05-04 晶丰电子封装材料（武汉）有限公司 一种柱式可充电电池与基座的连接结构及连接方法
CN110224100A (zh) * 2019-05-29 2019-09-10 盐城维实新能源科技有限公司 一种大容量式镍氢电池

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