WO2020255877A1 - Flexible printed circuit board with terminal, wiring module, and energy storage module - Google Patents

Flexible printed circuit board with terminal, wiring module, and energy storage module Download PDF

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Publication number
WO2020255877A1
WO2020255877A1 PCT/JP2020/023213 JP2020023213W WO2020255877A1 WO 2020255877 A1 WO2020255877 A1 WO 2020255877A1 JP 2020023213 W JP2020023213 W JP 2020023213W WO 2020255877 A1 WO2020255877 A1 WO 2020255877A1
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WIPO (PCT)
Prior art keywords
flexible printed
circuit board
printed circuit
terminals
terminal
Prior art date
Application number
PCT/JP2020/023213
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French (fr)
Japanese (ja)
Inventor
秀幸 久保木
平光　宏臣
雪清 董
正人 筒木
悠人 佐藤
良之 薄井
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2020255877A1 publication Critical patent/WO2020255877A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/61—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to flexible printed circuits, flat or ribbon cables or like structures
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components

Definitions

  • This specification discloses technologies related to flexible printed circuit boards with terminals, wiring modules, and power storage modules.
  • Patent Document 1 a battery module described in Japanese Patent No. 5621765 (Patent Document 1) is known.
  • the positive electrode terminal and the negative electrode terminal of adjacent battery cells are connected by a bus bar.
  • the tongue piece-shaped wiring member provided on the bus bar is connected to the contact pad formed on the flexible printed circuit board by reflow soldering.
  • the terminals soldered to the conductive path of the flexible printed circuit board are preferably formed of aluminum or an aluminum alloy having a relatively small specific gravity.
  • terminals made of metal containing aluminum do not always have good solderability, so there is a concern that the soldered portion may have poor connection.
  • the flexible printed board with terminals described in the present specification is a flexible printed board with terminals including a flexible printed board having a conductive path and terminals soldered to the conductive path, and the flexible printed board is a flexible printed board with terminals.
  • the terminal has a land that is electrically connected to the conductive path and the terminal can be connected by soldering.
  • the terminal has a plate-shaped terminal body made of metal containing aluminum and a plate surface of the terminal body. It is provided with a plated portion made of a metal containing nickel, and the land and the plated portion are soldered to each other.
  • FIG. 1 is a schematic view showing a vehicle equipped with the power storage module according to the first embodiment.
  • FIG. 2 is a plan view showing the power storage module of the first embodiment.
  • FIG. 3 is a perspective view showing a flexible printed circuit board with terminals.
  • FIG. 4 is a cross-sectional view taken along the line AA of FIG.
  • FIG. 5 is a cross-sectional view taken along the line BB of FIG.
  • FIG. 6 is an exploded perspective view showing a flexible printed circuit board with terminals.
  • FIG. 7 is a perspective view showing a flexible printed circuit board with terminals according to the second embodiment.
  • FIG. 10 is an exploded perspective view showing a flexible printed circuit board with terminals.
  • FIG. 11 is a perspective view showing a flexible printed circuit board with terminals according to the third embodiment.
  • FIG. 12 is a cross-sectional view taken along the line EE of FIG.
  • FIG. 13 is an exploded perspective view showing a flexible printed circuit board with terminals.
  • FIG. 14 is a perspective view showing a flexible printed circuit board with terminals according to the fourth embodiment.
  • FIG. 15 is an exploded perspective view showing a flexible printed circuit board with terminals.
  • FIG. 16 is a cross-sectional view showing a flexible printed circuit board with terminals according to the fifth embodiment.
  • the flexible printed board with terminals of the present disclosure is a flexible printed board with terminals including a flexible printed board having a conductive path and terminals soldered to the conductive path, and the flexible printed board is a flexible printed board with terminals. It has a land that is electrically connected to the conductive path and the terminals can be connected by soldering, and the terminals are formed on a plate-shaped terminal body made of metal containing aluminum and a plate surface of the terminal body. It is provided with a plated portion made of a metal containing nickel, which is in close contact with the land, and the land and the plated portion are soldered to each other.
  • solderability can be improved and the solder connection failure can be suppressed by adhering to the plate surface of the terminal body and soldering to the plated portion made of a metal containing nickel. ..
  • the terminal body includes an exposed portion where the metal containing aluminum is exposed on a surface different from the plate surface.
  • the metal plate material is punched out with a press machine to form a plurality of terminals, for example, plating is formed on individual terminals.
  • the manufacturing cost can be reduced as compared with the case of In this case, a metal containing aluminum is exposed on the terminal body, and an exposed portion having poor solderability is formed.
  • Solderability can be improved by soldering a plated portion made of a metal containing nickel. Therefore, it is possible to suppress solder connection defects while reducing the manufacturing cost.
  • a through hole through which the terminal is inserted is formed in the vicinity of the land on the flexible printed circuit board. In this way, it is possible to improve the workability of assembling the flexible printed circuit board with terminals.
  • a connecting member for connecting the adjacent electrode portions of a plurality of power storage elements having positive electrode and negative electrode portions is provided, and the terminal is integrally formed with the connecting member.
  • the manufacturing process can be simplified as compared with the configuration in which the terminals are formed separately from the connecting member.
  • a reinforcing plate to be laminated on the surface of the flexible printed circuit board on the connecting member side is provided.
  • the reinforcing plate for increasing the rigidity of the flexible printed circuit board is overlapped on the connecting member side, so that the reinforcing plate does not easily interfere with the soldering work, so that the soldering workability can be improved. become.
  • the flexible printed circuit board extends in a strip shape, and the plate surface of the terminal body is arranged along the extending direction of the flexible printed circuit board. In this way, the size of the flexible printed circuit board in the width direction can be reduced, so that the flexible printed circuit board with terminals can be miniaturized.
  • the present disclosure is a wiring module for a vehicle used by being mounted on a vehicle, and includes the flexible printed circuit board with terminals according to any one of claims 1 to 6.
  • the power storage module includes the flexible printed circuit board with terminals, a plurality of power storage elements having positive and negative electrode portions, and a connecting member for connecting the plurality of power storage elements adjacent to each other. ..
  • connection member is arranged on the electrode portion of the power storage element, a through hole is formed in the vicinity of the land on the flexible printed circuit board, and the terminal is the power storage element for the flexible printed circuit board. It is inserted into the through hole from the side. In this way, for example, it is not always necessary to secure a space for the terminal on the upper side of the flexible printed circuit board as compared with the case where the terminal is inserted into the through hole from the side opposite to the power storage element side of the flexible printed circuit board. Therefore, it is possible to reduce the height of the power storage module.
  • the first embodiment to which the present disclosure is applied to the storage pack 2 mounted on the vehicle 1 will be described with reference to FIGS. 1 to 6.
  • the power storage pack 2 is mounted on a vehicle 1 such as an electric vehicle or a hybrid vehicle and is used as a drive source for the vehicle 1.
  • vehicle 1 such as an electric vehicle or a hybrid vehicle
  • the reference numerals of other members may be omitted.
  • a power storage pack 2 is arranged near the center of the vehicle 1.
  • a PCU 3 Power Control Unit
  • the power storage pack 2 and the PCU 3 are connected by a wire harness 4.
  • the power storage pack 2 and the wire harness 4 are connected by a connector (not shown).
  • the power storage pack 2 has a power storage module 10 including a plurality of power storage elements 11.
  • Each power storage element 11 has a flat rectangular parallelepiped shape, contains a power storage element (not shown), and includes electrode portions 12A and 12B (shown as 12A for the positive electrode and 12B for the negative electrode) protruding from the upper surface. ..
  • electrode portions 12A and 12B shown as 12A for the positive electrode and 12B for the negative electrode protruding from the upper surface. ..
  • FIG. 2 the region on the upper surface of each storage element 11 on the one electrode portion 12A (12B) side is shown, and the region on the upper surface of each storage element 11 on the other electrode portion 12B (12A) side is omitted. There is.
  • the orientations of the adjacent power storage elements 11 are arranged so that the polarities of the adjacent electrode portions 12A and 12B are opposite to each other.
  • the upper surfaces of the electrode portions 12A and 12B have a flat rectangular shape on which the connecting member 14 can be placed.
  • the electrode portion 12A (12B) located at the end of the series connection is connected to an external device such as an inverter via an electric wire (not shown).
  • the connecting member 14 is made of a metal plate material such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 15 (an example of a “terminal”).
  • the connecting member main body 14A has a rectangular shape that covers a pair of adjacent electrode portions 12A and 12B.
  • the connecting member main body 14A is fixed to the electrode portions 12A and 12B by, for example, laser welding.
  • the connecting member main body 14A is provided with a positioning hole 14B into which a convex portion (not shown) of the electrode portions 12A and 12B is fitted, but the positioning hole 14B (and the convex portion of the connecting member) may not be provided. Good.
  • a plurality of power storage elements 11 may be connected in series or in parallel by a plurality of connecting members 14.
  • the terminal portion 15 is for detecting the voltage of the connecting member 14 (and the electrode portions 12A and 12B), and is connected from the left peripheral portion of the connecting member main body 14A as shown in FIGS. 4 and 6. It is inserted into the through hole 25 of the flexible printed circuit board (hereinafter referred to as "FPC21") by bending upward from the tip of the extension portion 15B extending outward on the member main body 14A.
  • the insertion portion 15A to be inserted is provided.
  • plated portions 17 made of nickel-containing metal are formed on both the front and back plate surfaces of the connecting member 14 and the terminal portion 15. As shown in FIG. 4, the plating portion 17 of the terminal portion 15 and the land 24 of the FPC 21 are soldered to electrically connect the connecting member 14 and the conductive path 23 of the FPC 21. On the other hand, as shown in FIG. 5, the plated portion 17 is not formed on the side surfaces of the connecting member 14 and the terminal portion 15 (an example of "a surface different from the plate surface", a cut surface cut by a press machine).
  • the exposed portion 16A is an exposed metal made of aluminum or an aluminum alloy.
  • the plated portion 17 for example, nickel sulfate, nickel chloride, or boric acid as main components can be used, and a brightener may be added. Further, the plated portion 17 can be formed on a metal plate material made of aluminum or an aluminum alloy by, for example, electroless nickel plating, electronickel plating or the like.
  • electroless nickel plating when hypophosphate, which is a reducing agent, is oxidized to phosphite, electrons are emitted and nickel ions in the solution are reduced to form nickel plating.
  • electronickel plating metal ions are reduced by electrons supplied from an external power source, and nickel ions in the solution obtain electrons to deposit nickel on a cathode (iron plate).
  • the connecting member 14 is formed by punching and bending a metal plate material in which a plated portion 17 containing nickel is formed on the entire outer surface by a press machine.
  • the wiring module 20 includes an FPC 21 and an insulating protector 28 that holds the FPC 21.
  • FPC21 As shown in FIGS. 3 and 6 (FIGS. 3 and 6 show a part of the flexible printed circuit board 30 with terminals, the others are omitted), the FPC 21 includes a plurality of insulating resin films 22 and a copper foil or the like. It is provided with (8 in this embodiment) conductive paths 23.
  • the insulating resin film 22 is made of a synthetic resin such as polyimide having flexibility and insulating properties.
  • the plurality of conductive paths 23 are arranged side by side at intervals in the front-rear direction, extend to a position corresponding to the connecting member 14 on one end side in the front-rear direction, and form a pair of lands 24 to which the terminal portion 15 can be soldered. It is connected.
  • the pair of lands 24 are made of a metal such as copper foil, and both have a rectangular shape that is long in the front-rear direction.
  • a through hole 25 penetrating the FPC 21 is formed between the pair of lands 24.
  • the through hole 25 has a rectangular shape that is long in the front-rear direction.
  • a reinforcing plate 26 is bonded and fixed to the back surface of the FPC 21 with an adhesive or the like.
  • the reinforcing plate 26 is made of metal or synthetic resin and regulates the bending of the FPC 21.
  • the end of each conductive path 23 opposite to the land 24 side is electrically connected to an external electronic control unit (Electronic Control Unit), although not shown.
  • the electronic control unit is equipped with a microcomputer, a semiconductor element, etc., and is well-known and has a function of detecting the voltage, current, temperature, etc. of the power storage element 11 and controlling the charge / discharge of each power storage element 11. It is a configuration.
  • the insulating protector 28 is made of an insulating synthetic resin, and as shown in FIG. 2, a plate that partitions a portion between the arrangement portion 28A where the FPC 21 is arranged and the adjacent power storage element 11 where the connecting member 14 is not arranged. It is provided with a partition wall 29 having a shape.
  • the arrangement portion 28A extends in a flat plate shape in the left-right direction, and the FPC 21 is adhered to the upper surface thereof.
  • the connecting member 14 is placed on the adjacent electrode portions 12A and 12B of the plurality of power storage elements 11. Further, the FPC 21 having the reinforcing plate 26 fixed to the back surface of the insulating protector 28 is adhered to the arrangement portion 28A with an adhesive or the like and fixed to the upper surface of the arrangement portion 28A to form the wiring module 20. Then, the wiring module 20 is placed at a predetermined position on the plurality of power storage elements 11 (see FIG. 2). As a result, the plurality of terminal portions 15 of the plurality of connecting members 14 are inserted into the plurality of through holes 25 of the FPC 21.
  • the connecting member 14 is fixed to the electrode portions 12A and 12B of the plurality of power storage elements 11 by laser welding, and from the upper side of the FPC 21 to the land 24 of the FPC 21 and the terminal portion 15 of the connecting member 14 by a robot soldering device.
  • the solder S in the molten state is attached.
  • the terminal portion 15 has a small cross-sectional area (narrow width) and heat does not easily escape to the connecting member main body 14A side, heat drawing during soldering can be suppressed. As a result, as shown in FIG.
  • the solder S adheres to the plated portion 17 of the terminal portion 15 to form a fillet of the solder S.
  • the exposed portion 16A on which the metal including aluminum on the plate surface intersecting with the plating portion 17 is exposed has poor solder wettability, so that the solder S adheres too much. do not do.
  • the flexible printed circuit board 30 with terminals is formed in which the terminal portions 15 of the plurality of connecting members 14 are soldered to the lands 24 of the FPC 21.
  • a power storage module 10 is formed in which the conductive path 23 of the FPC 21, the connecting member 14, and the electrode portions 12A and 12B are electrically connected.
  • the flexible printed substrate 30 with terminals includes an FPC 21 (flexible printed substrate) having a conductive path 23 and a terminal portion 15 (terminals) soldered to the conductive path 23, and the FPC 21 electrically connects to the conductive path 23. It has a land 24 that is connected and the terminal portion 15 can be connected by soldering, and the terminal portion 15 is in close contact with the plate-shaped terminal body 16 made of metal containing aluminum and the plate surface of the terminal body 16. A plated portion 17 made of a metal containing nickel is provided, and the land 24 and the plated portion 17 are soldered to each other.
  • solderability can be improved by adhering to the plate surface of the terminal body 16 and soldering to the plated portion 17 made of a metal containing nickel, and the poor connection of the solder S can be suppressed. can do.
  • the terminal body 16 includes an exposed portion 16A in which a metal containing aluminum is exposed on a surface different from the plate surface of the terminal body 16.
  • the metal plate material is punched out with a press machine to form a plurality of terminal portions 15, for example, individual terminals. It is preferable because the manufacturing cost can be reduced as compared with the case where plating is formed on the terminals.
  • a metal containing aluminum is exposed on the terminal body 16, and an exposed portion 16A having poor solderability is formed.
  • such an exposed portion 16A is generated. Even if there is, the solderability can be improved by soldering the plated portion 17 made of a metal containing nickel. Therefore, it is possible to suppress poor connection of the solder S while reducing the manufacturing cost.
  • a through hole 25 through which the terminal portion 15 (terminal) is inserted is formed in the vicinity of the land 24 in the FPC 21 (a position close to a position where the land 24 and the plating portion 17 can be soldered).
  • a connecting member 14 for connecting adjacent electrode portions 12A and 12B of a plurality of power storage elements 11 having electrode portions 12A and 12B of the positive electrode and the negative electrode is provided, and the terminal portion 15 (terminal) is integrated with the connecting member 14. It is formed.
  • the terminal portion 15 is integrally formed with the connecting member 14, the manufacturing process is simplified as compared with the configuration in which the terminal portion 15 (terminal) is formed separately from the connecting member 14. be able to.
  • a reinforcing plate 26 is provided which is overlapped with the surface of the FPC 21 on the connecting member 14 side.
  • the reinforcing plate 26 for increasing the rigidity of the FPC 21 is overlapped on the connecting member 14 side, so that the reinforcing plate 26 does not easily interfere with the soldering work, so that the soldering workability can be improved. It will be possible.
  • the FPC 21 extends in a strip shape, and the plate surface of the terminal body 16 is arranged along the front-rear direction (the direction in which the FPC 21 extends). By doing so, the dimensions of the FPC 21 in the left-right direction (width direction) can be reduced, so that the flexible printed circuit board 30 with terminals can be miniaturized.
  • the connecting member 14 is arranged on the electrode portions 12A and 12B of the power storage element 11, a through hole 25 is formed in the vicinity of the land 24 in the FPC 21, and the terminal portion 15 has a through hole 25 from the power storage element 11 side with respect to the FPC 21. It is inserted in. In this way, for example, it is necessary to secure a space for the terminal portion 15 on the upper side of the FPC 21 as compared with the case where the terminal portion 15 is inserted into the through hole 25 from the side opposite to the power storage element 11 side with respect to the FPC 21. Therefore, it is possible to reduce the height of the power storage module 10.
  • the wiring module 20 is a wiring module 20 for a vehicle mounted on and used in a vehicle 1, and includes a flexible printed circuit board 30 with terminals.
  • the connecting member 41 is made of a metal such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 43 as shown in FIG.
  • the terminal portion 43 is for detecting the voltage of the connecting member 41 (and the electrode portions 12A and 12B), and is L-shaped so as to be flush with the plate surface from the corner side to the FPC56 side of the connecting member main body 14A.
  • the extension portion 44B extending in a shape and the insertion portion 44A standing upward at the tip end portion of the extension portion 44B and being inserted into the through hole 59 of the FPC 56 are provided.
  • the plurality of conductive paths 23 of the FPC 56 are connected to a pair of lands 57 to which the terminal portion 43 can be soldered.
  • the pair of lands 57 are made of metal such as copper foil, and both have a rectangular shape that is long in the left-right direction.
  • a through hole 59 penetrating the FPC 56 is formed between the pair of lands 57.
  • the through hole 59 has a rectangular shape that is long in the left-right direction.
  • a plurality of connecting members 41 are placed on the electrode portions 12A and 12B of the plurality of power storage elements 11. Further, the back surface of the FPC 56 on which the reinforcing plate 26 is laminated is adhered to the upper surface of the arrangement portion 28A of the insulation protector 28 with an adhesive or the like to form the wiring module 20.
  • the wiring module 20 is placed at a predetermined position on the plurality of power storage elements 11 (see FIG. 2). As a result, the plurality of terminal portions 43 of the plurality of connecting members 41 are inserted into the plurality of through holes 59 of the FPC 56 in the wiring module 20.
  • the connecting member 41 is laser-welded to the electrode portions 12A and 12B, and the molten solder S is adhered to the land 57 of the FPC 56 and the terminal portion 43 of the connecting member 41.
  • the solder S adheres to the plated portion 17 of the terminal portion 43 to form a fillet of the solder S.
  • the solder S does not adhere to the exposed portion 16A where the metal containing aluminum is exposed because the wettability of the solder is not good.
  • the molten solder S is solidified to form a flexible printed circuit board 60 (FIG. 7) with terminals in which the terminal portions 43 of the plurality of connecting members 41 are soldered to the land 57 of the FPC 56.
  • a power storage module is formed in which the FPC 56, the connecting member 41, and the electrode portions 12A and 12B are connected.
  • the third embodiment will be described with reference to FIGS. 11 to 13.
  • the flexible printed circuit board 70 with terminals of the third embodiment is soldered in a state where the terminal portion 73 is inserted into the through hole 59 from the upper side of the FPC 21. Since other configurations are the same as those of the above-described embodiment, the same components as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted below.
  • the connecting member 71 is made of a metal such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 73 as shown in FIG.
  • the terminal portion 73 is for detecting the voltage of the connecting member 71 (and the electrode portions 12A and 12B), and is an extending portion extending from the peripheral portion of the connecting member main body 14A to the FPC21 side in a U-shaped curve.
  • a 74 and an insertion portion 76 to be inserted into the through hole 59 of the FPC 21 are provided.
  • the extending portion 74 is arranged above the upper surfaces of the connecting member main body 14A and the FPC 21.
  • the insertion portion 76 extends in a band shape along the extending direction of the FPC 21 from the tip portion extending below the extending portion 74.
  • the back surface of the FPC 21 on which the reinforcing plate 26 is laminated is adhered and fixed to the upper surface of the arrangement portion 28A of the insulation protector 28 with an adhesive or the like to form a wiring module 20, and a predetermined number of storage elements 11 are formed.
  • the wiring module 20 is placed at the position (see FIG. 2).
  • the plurality of terminal portions 73 of the plurality of connecting members 71 are inserted into the electrode portions 12A and 12B of the plurality of power storage elements 11. Place it (see Fig. 2).
  • the connecting member 71 is laser-welded to the electrode portions 12A and 12B, and the molten solder S is adhered to the land 24 of the FPC 21 and the terminal portion 73 of the connecting member 71.
  • the solder S adheres to the plated portion 17 of the terminal portion 73 to form a fillet of the solder S.
  • the solder S does not adhere to the exposed portion 16A (not shown) where the metal containing aluminum is exposed because the wettability of the solder is not good.
  • the flexible printed circuit board 80 with terminals of the fourth embodiment has a different shape of the terminal portion 83 from the third embodiment. Since other configurations are the same as those of the above-described embodiment, the same components as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted below.
  • the connecting member 81 is made of a metal such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 83 as shown in FIG.
  • the terminal portion 83 is for detecting the voltage of the connecting member 81 (and the electrode portions 12A and 12B), and the extending portion 85 extending from the edge portion of the connecting member main body 14A toward the FPC21 side and the extending portion 85 of the extending portion 85. It is provided with an insertion portion 87 which is bent in an arc shape from the tip portion and is inserted into the through hole 25 of the FPC 21.
  • a punch hole 88 for weight reduction is formed through the extending portion 85.
  • the back surface of the FPC 21 on which the reinforcing plate 26 is superposed is adhered and fixed with an adhesive or the like on the upper surface of the arrangement portion 28A of the insulation protector 28 to form the wiring module 20.
  • the wiring module 20 is placed at a predetermined position on the plurality of power storage elements 11.
  • the plurality of terminal portions 83 of the plurality of connecting members 81 are inserted into the electrode portions 12A and 12B of the plurality of power storage elements 11. Place it.
  • the connecting member 81 is laser-welded to the electrode portions 12A and 12B, and the molten solder S is adhered to the land 24 of the FPC 21 and the terminal portion 83 of the connecting member 81.
  • the solder S adheres to the plated portion 17 of the terminal portion 83 to form a fillet of the solder S.
  • the solder S does not adhere to the exposed portion 16A of the terminal portion 83 where the metal including aluminum is exposed because the wettability of the solder is not good.
  • a flexible printed circuit board 80 (FIG. 14) with terminals is formed in which the terminal portions 83 of the plurality of connecting members 81 are soldered to the land 24 of the FPC 21. Further, a power storage module is formed in which the FPC 21, the connecting member 81, and the electrode portions 12A and 12B are connected.
  • a land 91 is provided in the FPC 21 (a position not near the through hole 25 in the), and the terminal portion of the connecting member (the connecting member is shown only in the terminal portion 93 and the others are omitted).
  • the tip of 93 (terminal) is soldered while being placed on the land 91 on the surface of the FPC 21. Since other configurations are the same as those of the above-described embodiment, the same components as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted below.
  • a land 91 electrically connected to the conductive path 23 is formed on the surface of the FPC 21.
  • the lower end surface of the terminal portion 93 is in contact with the land 91.
  • the techniques described herein are not limited to the embodiments described above and in the drawings, and for example, the following embodiments are also included in the technical scope of the techniques described herein.
  • the terminal portions 15, 43, 73, 83, 93 soldered to the land 24 are integrally formed with the connecting member 14, but are not limited to this, and for example, the terminal portions separate from the connecting member (Terminals) may be formed so that a terminal portion (terminal) separate from the connecting member is soldered to the land 24.
  • the terminal portion (terminal) in this case can be connected to the connecting member by, for example, welding or soldering.
  • Vehicle 2 Storage pack 3: PCU 4: Wire harness 10: Power storage module 11: Power storage element 12A, 12B: Electrode portion 14, 41, 71, 81: Connection member 14A: Connection member main body 14B: Positioning hole 15, 43, 73, 83, 93: Terminal portion 15A , 44A, 76, 87: Insertion part 16: Terminal body 16A: Exposed part 17: Plating part 20: Wiring module 21, 56: FPC (Flexible printed circuit board) 22: Insulating resin film 23: Conductive paths 24, 57, 91: Lands 25, 59: Through holes 26: Reinforcing plate 28: Insulating protector 28A: Arrangement 29: Partition walls 30, 60, 70, 80, 90: Terminals Flexible printed circuit board with 15B, 44B, 74, 85: Extension 87: Insertion 88: Drilling hole S: Solder

Abstract

A flexible printed circuit board with terminal according to the present invention is provided with a flexible printed circuit board comprising a conductive path, and a terminal soldered to the conductive path. The flexible printed circuit board comprises a land that is electrically connected to the conductive path, and to which the terminal can be connected by soldering. The terminal is provided with a flat terminal body formed from an aluminum-containing metal, and plating that is bonded to the flat surface of the terminal body and is formed from a nickel-containing metal. The land and the plating are soldered together.

Description

端子付きフレキシブルプリント基板、配線モジュール及び蓄電モジュールFlexible printed circuit board with terminals, wiring module and power storage module
　本明細書では、端子付きフレキシブルプリント基板、配線モジュール及び蓄電モジュールに関する技術を開示する。 This specification discloses technologies related to flexible printed circuit boards with terminals, wiring modules, and power storage modules.
　従来、電池モジュールとして、特許第５６２１７６５号公報（特許文献１）に記載のものが知られている。この電池モジュールは、バスバーにより隣り合う電池セルの正極端子と負極端子とが接続されている。バスバーに設けられた舌片状の結線部材は、フレキシブルプリント基板に形成されているコンタクトパッドにリフロー半田付けによって接続されている。 Conventionally, a battery module described in Japanese Patent No. 5621765 (Patent Document 1) is known. In this battery module, the positive electrode terminal and the negative electrode terminal of adjacent battery cells are connected by a bus bar. The tongue piece-shaped wiring member provided on the bus bar is connected to the contact pad formed on the flexible printed circuit board by reflow soldering.
特許第５６２１７６５号公報Japanese Patent No. 5621765
　近年、車両の更なる軽量化が求められている。軽量化の観点からは、フレキシブルプリント基板の導電路に半田付けされる端子は、比較的、比重の小さなアルミニウム又はアルミニウム合金により形成することが好ましい。しかし、アルミニウムを含む金属からなる端子は、必ずしも半田付け性が良好とはならないため、半田付けされた箇所の接続不良が懸念される。 In recent years, further weight reduction of vehicles has been required. From the viewpoint of weight reduction, the terminals soldered to the conductive path of the flexible printed circuit board are preferably formed of aluminum or an aluminum alloy having a relatively small specific gravity. However, terminals made of metal containing aluminum do not always have good solderability, so there is a concern that the soldered portion may have poor connection.
　本明細書に記載された端子付きフレキシブルプリント基板は、導電路を有するフレキシブルプリント基板と、前記導電路に半田付けされた端子と、を備える端子付きフレキシブルプリント基板であって、前記フレキシブルプリント基板は、前記導電路に電気的に接続され、前記端子を半田付けにより接続可能とされたランドを有し、前記端子は、アルミニウムを含む金属からなる板状の端子本体と、前記端子本体の板面に密着し、ニッケルを含む金属からなるメッキ部と、を備え、前記ランドと前記メッキ部とが半田付けされている。 The flexible printed board with terminals described in the present specification is a flexible printed board with terminals including a flexible printed board having a conductive path and terminals soldered to the conductive path, and the flexible printed board is a flexible printed board with terminals. The terminal has a land that is electrically connected to the conductive path and the terminal can be connected by soldering. The terminal has a plate-shaped terminal body made of metal containing aluminum and a plate surface of the terminal body. It is provided with a plated portion made of a metal containing nickel, and the land and the plated portion are soldered to each other.
　本明細書に記載された技術によれば、端子とフレキシブルプリント基板のランドとが半田付けされる箇所の接続不良を抑制することができる。 According to the technique described in this specification, it is possible to suppress a connection failure at a place where the terminal and the land of the flexible printed circuit board are soldered.
図１は、実施形態１にかかる蓄電モジュールが搭載された車両を示す模式図である。FIG. 1 is a schematic view showing a vehicle equipped with the power storage module according to the first embodiment. 図２は、実施形態１の蓄電モジュールを示す平面図である。FIG. 2 is a plan view showing the power storage module of the first embodiment. 図３は、端子付きフレキシブルプリント基板を示す斜視図である。FIG. 3 is a perspective view showing a flexible printed circuit board with terminals. 図４は、図３のＡ－Ａ断面図である。FIG. 4 is a cross-sectional view taken along the line AA of FIG. 図５は、図３のＢ－Ｂ断面図である。FIG. 5 is a cross-sectional view taken along the line BB of FIG. 図６は、端子付きフレキシブルプリント基板を示す分解斜視図である。FIG. 6 is an exploded perspective view showing a flexible printed circuit board with terminals. 図７は、実施形態２の端子付きフレキシブルプリント基板を示す斜視図である。FIG. 7 is a perspective view showing a flexible printed circuit board with terminals according to the second embodiment. 図８は、図７のＣ－Ｃ断面図である。FIG. 8 is a cross-sectional view taken along the line CC of FIG. 図９は、図７のＤ－Ｄ断面図である。9 is a cross-sectional view taken along the line DD of FIG. 図１０は、端子付きフレキシブルプリント基板を示す分解斜視図である。FIG. 10 is an exploded perspective view showing a flexible printed circuit board with terminals. 図１１は、実施形態３の端子付きフレキシブルプリント基板を示す斜視図である。FIG. 11 is a perspective view showing a flexible printed circuit board with terminals according to the third embodiment. 図１２は、図１１のＥ－Ｅ断面図である。FIG. 12 is a cross-sectional view taken along the line EE of FIG. 図１３は、端子付きフレキシブルプリント基板を示す分解斜視図である。FIG. 13 is an exploded perspective view showing a flexible printed circuit board with terminals. 図１４は、実施形態４の端子付きフレキシブルプリント基板を示す斜視図である。FIG. 14 is a perspective view showing a flexible printed circuit board with terminals according to the fourth embodiment. 図１５は、端子付きフレキシブルプリント基板を示す分解斜視図である。FIG. 15 is an exploded perspective view showing a flexible printed circuit board with terminals. 図１６は、実施形態５の端子付きフレキシブルプリント基板を示す断面図である。FIG. 16 is a cross-sectional view showing a flexible printed circuit board with terminals according to the fifth embodiment.
［本開示の実施形態の説明］
　最初に本開示の実施態様を列記して説明する。
（１）本開示の端子付きフレキシブルプリント基板は、導電路を有するフレキシブルプリント基板と、前記導電路に半田付けされた端子と、を備える端子付きフレキシブルプリント基板であって、前記フレキシブルプリント基板は、前記導電路に電気的に接続され、前記端子を半田付けにより接続可能とされたランドを有し、前記端子は、アルミニウムを含む金属からなる板状の端子本体と、前記端子本体の板面に密着し、ニッケルを含む金属からなるメッキ部と、を備え、前記ランドと前記メッキ部とが半田付けされている。
　アルミニウムを含む金属からなる端子本体に半田付けする場合には、銅を含む金属に半田付けする場合と比較して、半田付け性の低下による半田の接続不良が懸念される。上記構成によれば、端子本体の板面に密着し、ニッケルを含む金属からなるメッキ部に半田付けすることにより、半田付け性を向上させることができ、半田の接続不良を抑制することができる。 [Explanation of Embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.
(1) The flexible printed board with terminals of the present disclosure is a flexible printed board with terminals including a flexible printed board having a conductive path and terminals soldered to the conductive path, and the flexible printed board is a flexible printed board with terminals. It has a land that is electrically connected to the conductive path and the terminals can be connected by soldering, and the terminals are formed on a plate-shaped terminal body made of metal containing aluminum and a plate surface of the terminal body. It is provided with a plated portion made of a metal containing nickel, which is in close contact with the land, and the land and the plated portion are soldered to each other.
When soldering to a terminal body made of a metal containing aluminum, there is a concern that the solder connection may be poor due to a decrease in solderability as compared with the case of soldering to a metal containing copper. According to the above configuration, the solderability can be improved and the solder connection failure can be suppressed by adhering to the plate surface of the terminal body and soldering to the plated portion made of a metal containing nickel. ..
（２）前記端子本体は、前記板面とは異なる面に前記アルミニウムを含む金属が露出した露出部を備える。
　端子本体に密着するメッキ部を形成するために、例えば金属板材の全面にメッキ部を形成した後に、プレス機で金属板材を打ち抜き、複数の端子を形成すれば、例えば個別の端子にメッキを形成する場合と比較して製造コストを低減することができるため好ましい。この場合には、端子本体にアルミニウムを含む金属が露出し、半田付け性が良好ではない露出部が形成されるが、上記構成によれば、このような露出部が生じる構成であっても、ニッケルを含む金属からなるメッキ部を半田付けすることにより、半田付け性を向上させることができる。よって、製造コストを低減しつつ、半田の接続不良を抑制することができる。 (2) The terminal body includes an exposed portion where the metal containing aluminum is exposed on a surface different from the plate surface.
In order to form a plated portion that adheres to the terminal body, for example, after forming a plated portion on the entire surface of the metal plate material, the metal plate material is punched out with a press machine to form a plurality of terminals, for example, plating is formed on individual terminals. This is preferable because the manufacturing cost can be reduced as compared with the case of In this case, a metal containing aluminum is exposed on the terminal body, and an exposed portion having poor solderability is formed. However, according to the above configuration, even in a configuration in which such an exposed portion occurs, Solderability can be improved by soldering a plated portion made of a metal containing nickel. Therefore, it is possible to suppress solder connection defects while reducing the manufacturing cost.
（３）前記フレキシブルプリント基板における前記ランドの近傍には、前記端子が挿通される貫通孔が貫通形成されている。
　このようにすれば、端子付きフレキシブルプリント基板の組付作業性を向上させることが可能になる。 (3) A through hole through which the terminal is inserted is formed in the vicinity of the land on the flexible printed circuit board.
In this way, it is possible to improve the workability of assembling the flexible printed circuit board with terminals.
（４）正極及び負極の電極部を有する複数の蓄電素子の隣り合う前記電極部間を接続する接続部材を備え、前記端子は、接続部材に一体に形成されている。
　このようにすれば、接続部材に端子が一体に形成されているため、端子を接続部材と別体に形成する構成と比較して、製造工程を簡素化することができる。 (4) A connecting member for connecting the adjacent electrode portions of a plurality of power storage elements having positive electrode and negative electrode portions is provided, and the terminal is integrally formed with the connecting member.
In this way, since the terminals are integrally formed with the connecting member, the manufacturing process can be simplified as compared with the configuration in which the terminals are formed separately from the connecting member.
（５）前記フレキシブルプリント基板における前記接続部材側の面に重ねられる補強板を備える。
　このようにすれば、フレキシブルプリント基板の剛性を高めるための補強板が接続部材側に重ねられることにより、補強板が半田付け作業の障害となりにくいため、半田付けの作業性を向上させることが可能になる。 (5) A reinforcing plate to be laminated on the surface of the flexible printed circuit board on the connecting member side is provided.
In this way, the reinforcing plate for increasing the rigidity of the flexible printed circuit board is overlapped on the connecting member side, so that the reinforcing plate does not easily interfere with the soldering work, so that the soldering workability can be improved. become.
（６）前記フレキシブルプリント基板は、帯状に延びており、前記端子本体の板面は、前記フレキシブルプリント基板の延びる方向に沿って配されている。
　このようにすれば、フレキシブルプリント基板の幅方向の寸法を小さくできるため、端子付きフレキシブルプリント基板を小型化することが可能になる。 (6) The flexible printed circuit board extends in a strip shape, and the plate surface of the terminal body is arranged along the extending direction of the flexible printed circuit board.
In this way, the size of the flexible printed circuit board in the width direction can be reduced, so that the flexible printed circuit board with terminals can be miniaturized.
（７）本開示は、車両に搭載されて用いられる車両用の配線モジュールであって、請求項１から請求項６のいずれか１項に記載の端子付きフレキシブルプリント基板を備える。 (7) The present disclosure is a wiring module for a vehicle used by being mounted on a vehicle, and includes the flexible printed circuit board with terminals according to any one of claims 1 to 6.
（８）蓄電モジュールは、前記端子付きフレキシブルプリント基板と、正極及び負極の電極部を有する複数の蓄電素子と、前記複数の蓄電素子の隣り合う前記電極部間を接続する接続部材と、を備える。 (8) The power storage module includes the flexible printed circuit board with terminals, a plurality of power storage elements having positive and negative electrode portions, and a connecting member for connecting the plurality of power storage elements adjacent to each other. ..
（９）前記接続部材は、前記蓄電素子の前記電極部上に配され、前記フレキシブルプリント基板における前記ランドの近傍には、貫通孔が形成され、前記端子は、前記フレキシブルプリント基板に対する前記蓄電素子側から前記貫通孔に挿通されている。
　このようにすれば、例えば、フレキシブルプリント基板に対する蓄電素子側とは反対側から貫通孔に端子を挿通する場合と比較して、必ずしもフレキシブルプリント基板の上方側に端子のスペースを確保する必要がないため、蓄電モジュールを低背化することが可能になる。 (9) The connection member is arranged on the electrode portion of the power storage element, a through hole is formed in the vicinity of the land on the flexible printed circuit board, and the terminal is the power storage element for the flexible printed circuit board. It is inserted into the through hole from the side.
In this way, for example, it is not always necessary to secure a space for the terminal on the upper side of the flexible printed circuit board as compared with the case where the terminal is inserted into the through hole from the side opposite to the power storage element side of the flexible printed circuit board. Therefore, it is possible to reduce the height of the power storage module.
［本開示の実施形態の詳細］
　本開示の端子付きフレキシブルプリント基板及び蓄電モジュールの具体例を、以下に図面を参照しつつ説明する。なお、本開示はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 [Details of Embodiments of the present disclosure]
Specific examples of the flexible printed circuit board with terminals and the power storage module of the present disclosure will be described below with reference to the drawings. It should be noted that the present disclosure is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
　＜実施形態１＞
　本開示を車両１に搭載される蓄電パック２に適用した実施形態１が図１から図６を参照しつつ説明される。蓄電パック２は、電気自動車、またはハイブリッド自動車等の車両１に搭載されて、車両１の駆動源として用いられる。以下の説明においては、複数の部材については一部の部材にのみ符号を付し、他の部材の符号を省略する場合がある。 <Embodiment 1>
The first embodiment to which the present disclosure is applied to the storage pack 2 mounted on the vehicle 1 will be described with reference to FIGS. 1 to 6. The power storage pack 2 is mounted on a vehicle 1 such as an electric vehicle or a hybrid vehicle and is used as a drive source for the vehicle 1. In the following description, with respect to a plurality of members, only some members may be designated with reference numerals, and the reference numerals of other members may be omitted.
［全体構成］
　図１に示されるように、車両１の中央付近には蓄電パック２が配設されている。車両１の前部にはＰＣＵ３（Ｐｏｗｅｒ　Ｃｏｎｔｒｏｌ　Ｕｎｉｔ）が配設されている。蓄電パック２とＰＣＵ３とは、ワイヤーハーネス４によって接続されている。蓄電パック２とワイヤーハーネス４とは図示しないコネクタによって接続されている。蓄電パック２は複数の蓄電素子１１を備えた蓄電モジュール１０を有する。 [overall structure]
As shown in FIG. 1, a power storage pack 2 is arranged near the center of the vehicle 1. A PCU 3 (Power Control Unit) is arranged at the front portion of the vehicle 1. The power storage pack 2 and the PCU 3 are connected by a wire harness 4. The power storage pack 2 and the wire harness 4 are connected by a connector (not shown). The power storage pack 2 has a power storage module 10 including a plurality of power storage elements 11.
　各蓄電素子１１は、扁平な直方体状であって、蓄電要素（図示しない）が内部に収容されており、上面から突出する電極部１２Ａ，１２Ｂ（正極を１２Ａ，負極を１２Ｂとして図示）を備える。なお、図２では、各蓄電素子１１の上面における一方の電極部１２Ａ（１２Ｂ）側の領域が図示され、各蓄電素子１１の上面における他方の電極部１２Ｂ（１２Ａ）側の領域は省略されている。隣り合う蓄電素子１１の向きは、隣り合う電極部１２Ａ，１２Ｂの極性が反対になるように配置されている。 Each power storage element 11 has a flat rectangular parallelepiped shape, contains a power storage element (not shown), and includes electrode portions 12A and 12B (shown as 12A for the positive electrode and 12B for the negative electrode) protruding from the upper surface. .. In FIG. 2, the region on the upper surface of each storage element 11 on the one electrode portion 12A (12B) side is shown, and the region on the upper surface of each storage element 11 on the other electrode portion 12B (12A) side is omitted. There is. The orientations of the adjacent power storage elements 11 are arranged so that the polarities of the adjacent electrode portions 12A and 12B are opposite to each other.
　電極部１２Ａ，１２Ｂの上面は、平坦な長方形状であって、接続部材１４が載置可能とされている。直列接続の端部に位置する電極部１２Ａ（１２Ｂ）は、図示しない電線を介して外部のインバータ等の機器に接続される。 The upper surfaces of the electrode portions 12A and 12B have a flat rectangular shape on which the connecting member 14 can be placed. The electrode portion 12A (12B) located at the end of the series connection is connected to an external device such as an inverter via an electric wire (not shown).
（接続部材１４）
　接続部材１４は、アルミニウム、アルミニウム合金等の金属板材からなり、接続部材本体１４Ａと、端子部１５（「端子」の一例）とを備える。接続部材本体１４Ａは、隣り合う一対の電極部１２Ａ，１２Ｂを覆う長方形状とされている。接続部材本体１４Ａは、電極部１２Ａ，１２Ｂに例えばレーザー溶接により固定される。なお、接続部材本体１４Ａには、電極部１２Ａ，１２Ｂの図示しない凸部が嵌め入れられる位置決め孔１４Ｂが設けられているが、位置決め孔１４Ｂ（及び接続部材の凸部）を設けない構成としてもよい。図２では、一つの接続部材１４が図示されているが、複数の接続部材１４により複数の蓄電素子１１を直列または並列に接続するようにしてもよい。 (Connecting member 14)
The connecting member 14 is made of a metal plate material such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 15 (an example of a “terminal”). The connecting member main body 14A has a rectangular shape that covers a pair of adjacent electrode portions 12A and 12B. The connecting member main body 14A is fixed to the electrode portions 12A and 12B by, for example, laser welding. The connecting member main body 14A is provided with a positioning hole 14B into which a convex portion (not shown) of the electrode portions 12A and 12B is fitted, but the positioning hole 14B (and the convex portion of the connecting member) may not be provided. Good. Although one connecting member 14 is shown in FIG. 2, a plurality of power storage elements 11 may be connected in series or in parallel by a plurality of connecting members 14.
　端子部１５は、接続部材１４（及び電極部１２Ａ，１２Ｂ）の電圧を検知するためのものであり、図４，図６に示すように、接続部材本体１４Ａの左方側の周縁部から接続部材本体１４Ａに面一に外方に延出された延出部１５Ｂと、延出部１５Ｂの先端部から上方に曲がってフレキシブルプリント基板（以下では「ＦＰＣ２１」とする）の貫通孔２５に挿通される挿通部１５Ａを備える。 The terminal portion 15 is for detecting the voltage of the connecting member 14 (and the electrode portions 12A and 12B), and is connected from the left peripheral portion of the connecting member main body 14A as shown in FIGS. 4 and 6. It is inserted into the through hole 25 of the flexible printed circuit board (hereinafter referred to as "FPC21") by bending upward from the tip of the extension portion 15B extending outward on the member main body 14A. The insertion portion 15A to be inserted is provided.
　接続部材１４及び端子部１５における表裏両方の板面には、図６に示すように、ニッケルを含む金属からなるメッキ部１７が形成されている。図４に示すように、端子部１５のメッキ部１７とＦＰＣ２１のランド２４とが半田付けされることにより、接続部材１４とＦＰＣ２１の導電路２３とが電気的に接続される。一方、図５に示すように、接続部材１４及び端子部１５における側面（「板面と異なる面」一例、プレス機で切断された切断面）には、メッキ部１７が形成されておらず、アルミニウム又はアルミニウム合金からなる金属が露出した露出部１６Ａとされている。メッキ部１７の形成は、例えば硫酸ニッケル、塩化ニッケル、ホウ酸を主成分としたものを用いることができ、光沢剤を添加してもよい。また、メッキ部１７の形成は、アルミニウム又はアルミニウム合金からなる金属板材に対して、例えば、無電解ニッケルめっき、電気ニッケルめっき等により形成することができる。無電解ニッケルめっきは、還元剤である次亜リン酸塩が酸化されて亜リン酸塩になるときに電子を放出し、溶液中のニッケルイオンを還元してニッケルめっきを形成する。電気ニッケルめっきは、外部電源から供給される電子により金属イオンの還元が行われ、溶液中のニッケルイオンが電子を得て陰極（鉄板）にニッケルを析出させる。接続部材１４は、外面の全体にニッケルを含むメッキ部１７が形成された状態の金属板材に対してプレス機により打ち抜き加工及び曲げ加工を施すことで形成される。 As shown in FIG. 6, plated portions 17 made of nickel-containing metal are formed on both the front and back plate surfaces of the connecting member 14 and the terminal portion 15. As shown in FIG. 4, the plating portion 17 of the terminal portion 15 and the land 24 of the FPC 21 are soldered to electrically connect the connecting member 14 and the conductive path 23 of the FPC 21. On the other hand, as shown in FIG. 5, the plated portion 17 is not formed on the side surfaces of the connecting member 14 and the terminal portion 15 (an example of "a surface different from the plate surface", a cut surface cut by a press machine). The exposed portion 16A is an exposed metal made of aluminum or an aluminum alloy. For the formation of the plated portion 17, for example, nickel sulfate, nickel chloride, or boric acid as main components can be used, and a brightener may be added. Further, the plated portion 17 can be formed on a metal plate material made of aluminum or an aluminum alloy by, for example, electroless nickel plating, electronickel plating or the like. In electroless nickel plating, when hypophosphate, which is a reducing agent, is oxidized to phosphite, electrons are emitted and nickel ions in the solution are reduced to form nickel plating. In electronickel plating, metal ions are reduced by electrons supplied from an external power source, and nickel ions in the solution obtain electrons to deposit nickel on a cathode (iron plate). The connecting member 14 is formed by punching and bending a metal plate material in which a plated portion 17 containing nickel is formed on the entire outer surface by a press machine.
（配線モジュール２０）
　配線モジュール２０は、図２に示すように、ＦＰＣ２１と、ＦＰＣ２１を保持する絶縁プロテクタ２８とを備えて構成されている。
（ＦＰＣ２１）
　ＦＰＣ２１は、図３，図６（図３，図６は端子付きフレキシブルプリント基板３０の一部を図示し、他は省略する）に示すように、絶縁樹脂フィルム２２と、銅箔等からなる複数（本実施形態では８本）の導電路２３とを備える。絶縁樹脂フィルム２２は、柔軟性及び絶縁性を有するポリイミド等の合成樹脂からなる。 (Wiring module 20)
As shown in FIG. 2, the wiring module 20 includes an FPC 21 and an insulating protector 28 that holds the FPC 21.
(FPC21)
As shown in FIGS. 3 and 6 (FIGS. 3 and 6 show a part of the flexible printed circuit board 30 with terminals, the others are omitted), the FPC 21 includes a plurality of insulating resin films 22 and a copper foil or the like. It is provided with (8 in this embodiment) conductive paths 23. The insulating resin film 22 is made of a synthetic resin such as polyimide having flexibility and insulating properties.
　複数の導電路２３は、前後方向に間隔を空けて並んで配され、前後方向の一端側には、接続部材１４に応じた位置まで延び、端子部１５を半田付け可能な一対のランド２４に接続されている。一対のランド２４は、銅箔等の金属からなり、共に前後方向に長い長方形状とされている。一対のランド２４の間には、ＦＰＣ２１を貫通する貫通孔２５が貫通形成されている。貫通孔２５は、前後方向に長い長方形状とされている。ＦＰＣ２１の裏面には、図４に示すように、補強板２６が接着剤等で接着されて固定されている。補強板２６は、金属または合成樹脂からなり、ＦＰＣ２１の撓みを規制する。各導電路２３におけるランド２４側とは反対側の端部は、図示はしないが、外部の電子制御ユニット（Electronic Control Unit）に電気的に接続される。電子制御ユニットは、マイクロコンピュータ、半導体素子等が搭載されたものであって、蓄電素子１１の電圧・電流・温度等の検知、各蓄電素子１１の充放電コントロール等を行う機能を備えた周知の構成のものである。 The plurality of conductive paths 23 are arranged side by side at intervals in the front-rear direction, extend to a position corresponding to the connecting member 14 on one end side in the front-rear direction, and form a pair of lands 24 to which the terminal portion 15 can be soldered. It is connected. The pair of lands 24 are made of a metal such as copper foil, and both have a rectangular shape that is long in the front-rear direction. A through hole 25 penetrating the FPC 21 is formed between the pair of lands 24. The through hole 25 has a rectangular shape that is long in the front-rear direction. As shown in FIG. 4, a reinforcing plate 26 is bonded and fixed to the back surface of the FPC 21 with an adhesive or the like. The reinforcing plate 26 is made of metal or synthetic resin and regulates the bending of the FPC 21. The end of each conductive path 23 opposite to the land 24 side is electrically connected to an external electronic control unit (Electronic Control Unit), although not shown. The electronic control unit is equipped with a microcomputer, a semiconductor element, etc., and is well-known and has a function of detecting the voltage, current, temperature, etc. of the power storage element 11 and controlling the charge / discharge of each power storage element 11. It is a configuration.
（絶縁プロテクタ２８）
　絶縁プロテクタ２８は、絶縁性の合成樹脂からなり、図２に示すように、ＦＰＣ２１が配される配設部２８Ａと、隣り合う蓄電素子１１間のうち、接続部材１４が配されない部分を仕切る板状の仕切壁２９とを備える。配設部２８Ａは、左右方向に平板状に延びており、上面にＦＰＣ２１が接着されている。 (Insulation protector 28)
The insulating protector 28 is made of an insulating synthetic resin, and as shown in FIG. 2, a plate that partitions a portion between the arrangement portion 28A where the FPC 21 is arranged and the adjacent power storage element 11 where the connecting member 14 is not arranged. It is provided with a partition wall 29 having a shape. The arrangement portion 28A extends in a flat plate shape in the left-right direction, and the FPC 21 is adhered to the upper surface thereof.
　次に、蓄電モジュール１０の組み付けについて説明する。
　複数の蓄電素子１１の隣り合う電極部１２Ａ，１２Ｂに接続部材１４を載置する。また、絶縁プロテクタ２８における配設部２８Ａの上面に、補強板２６が裏面に固定されたＦＰＣ２１を接着剤等で配設部２８Ａに接着して固定し、配線モジュール２０を形成する。そして、複数の蓄電素子１１の上における所定の位置に配線モジュール２０を載置する（図２参照）。これにより、ＦＰＣ２１の複数の貫通孔２５に複数の接続部材１４の複数の端子部１５が挿通された状態となる。 Next, the assembly of the power storage module 10 will be described.
The connecting member 14 is placed on the adjacent electrode portions 12A and 12B of the plurality of power storage elements 11. Further, the FPC 21 having the reinforcing plate 26 fixed to the back surface of the insulating protector 28 is adhered to the arrangement portion 28A with an adhesive or the like and fixed to the upper surface of the arrangement portion 28A to form the wiring module 20. Then, the wiring module 20 is placed at a predetermined position on the plurality of power storage elements 11 (see FIG. 2). As a result, the plurality of terminal portions 15 of the plurality of connecting members 14 are inserted into the plurality of through holes 25 of the FPC 21.
　次に、複数の蓄電素子１１の各電極部１２Ａ，１２Ｂに接続部材１４をレーザー溶接により固定するとともに、ＦＰＣ２１の上方側からロボット半田付け装置によりＦＰＣ２１のランド２４及び接続部材１４の端子部１５に対して溶融状態の半田Ｓを付着する。このときランド２４の上方側が端子部１５で覆われていないため、ロボット半田付けを容易に行うことができる。また、端子部１５については断面面積が小さく（幅が狭く）、接続部材本体１４Ａ側に熱が逃げにくいため、半田付け時の熱引きを抑制することができる。これにより、図４に示すように、貫通孔２５内に半田Ｓが進入しつつ、端子部１５のメッキ部１７に半田Ｓが密着して半田Ｓのフィレットが形成される。一方、図５に示すように、端子部１５のうち、メッキ部１７と交差する板面のアルミニウムを含む金属が露出した露出部１６Ａは、半田の濡れ性が良くないため、あまり半田Ｓが付着しない。溶融状態の半田Ｓが固化すると、複数の接続部材１４の各端子部１５がＦＰＣ２１の各ランド２４に半田付けされた状態の端子付きフレキシブルプリント基板３０が形成される。また、ＦＰＣ２１の導電路２３、接続部材１４及び電極部１２Ａ，１２Ｂが電気的に接続された状態の蓄電モジュール１０が形成される。 Next, the connecting member 14 is fixed to the electrode portions 12A and 12B of the plurality of power storage elements 11 by laser welding, and from the upper side of the FPC 21 to the land 24 of the FPC 21 and the terminal portion 15 of the connecting member 14 by a robot soldering device. On the other hand, the solder S in the molten state is attached. At this time, since the upper side of the land 24 is not covered with the terminal portion 15, robot soldering can be easily performed. Further, since the terminal portion 15 has a small cross-sectional area (narrow width) and heat does not easily escape to the connecting member main body 14A side, heat drawing during soldering can be suppressed. As a result, as shown in FIG. 4, while the solder S penetrates into the through hole 25, the solder S adheres to the plated portion 17 of the terminal portion 15 to form a fillet of the solder S. On the other hand, as shown in FIG. 5, of the terminal portions 15, the exposed portion 16A on which the metal including aluminum on the plate surface intersecting with the plating portion 17 is exposed has poor solder wettability, so that the solder S adheres too much. do not do. When the solder S in the molten state is solidified, the flexible printed circuit board 30 with terminals is formed in which the terminal portions 15 of the plurality of connecting members 14 are soldered to the lands 24 of the FPC 21. Further, a power storage module 10 is formed in which the conductive path 23 of the FPC 21, the connecting member 14, and the electrode portions 12A and 12B are electrically connected.
　上記実施形態によれば、以下の作用、効果を奏する。
　端子付きフレキシブルプリント基板３０は、導電路２３を有するＦＰＣ２１（フレキシブルプリント基板）と、導電路２３に半田付けされた端子部１５（端子）と、を備え、ＦＰＣ２１は、導電路２３に電気的に接続され、端子部１５を半田付けにより接続可能とされたランド２４を有し、端子部１５は、アルミニウムを含む金属からなる板状の端子本体１６と、端子本体１６の板面に密着し、ニッケルを含む金属からなるメッキ部１７と、を備え、ランド２４とメッキ部１７とが半田付けされている。
　アルミニウムを含む金属からなる端子本体１６に半田付けする場合には、銅を含む金属に半田付けする場合と比較して、半田付け性の低下による半田Ｓの接続不良が懸念される。本実施形態によれば、端子本体１６の板面に密着し、ニッケルを含む金属からなるメッキ部１７に半田付けすることにより、半田付け性を向上させることができ、半田Ｓの接続不良を抑制することができる。 According to the above embodiment, the following actions and effects are exhibited.
The flexible printed substrate 30 with terminals includes an FPC 21 (flexible printed substrate) having a conductive path 23 and a terminal portion 15 (terminals) soldered to the conductive path 23, and the FPC 21 electrically connects to the conductive path 23. It has a land 24 that is connected and the terminal portion 15 can be connected by soldering, and the terminal portion 15 is in close contact with the plate-shaped terminal body 16 made of metal containing aluminum and the plate surface of the terminal body 16. A plated portion 17 made of a metal containing nickel is provided, and the land 24 and the plated portion 17 are soldered to each other.
When soldering to the terminal body 16 made of a metal containing aluminum, there is a concern that the solder S may be poorly connected due to a decrease in solderability as compared with the case of soldering to a metal containing copper. According to this embodiment, the solderability can be improved by adhering to the plate surface of the terminal body 16 and soldering to the plated portion 17 made of a metal containing nickel, and the poor connection of the solder S can be suppressed. can do.
　また、端子本体１６は、端子本体１６における前記板面とは異なる面にアルミニウムを含む金属が露出した露出部１６Ａを備える。
　端子本体１６に密着するメッキ部１７を形成するために、例えば金属板材の全面にメッキ部１７を形成した後に、プレス機で金属板材を打ち抜き、複数の端子部１５を形成すれば、例えば個別の端子にメッキを形成する場合と比較して製造コストを低減することができて好ましい。この場合には、端子本体１６にアルミニウムを含む金属が露出し、半田付け性が良好ではない露出部１６Ａが形成されるが、上記実施形態によれば、このような露出部１６Ａが生じる構成であっても、ニッケルを含む金属からなるメッキ部１７を半田付けすることにより、半田付け性を向上させることができる。よって、製造コストを低減しつつ、半田Ｓの接続不良を抑制することができる。 Further, the terminal body 16 includes an exposed portion 16A in which a metal containing aluminum is exposed on a surface different from the plate surface of the terminal body 16.
In order to form the plated portion 17 that is in close contact with the terminal body 16, for example, after forming the plated portion 17 on the entire surface of the metal plate material, the metal plate material is punched out with a press machine to form a plurality of terminal portions 15, for example, individual terminals. It is preferable because the manufacturing cost can be reduced as compared with the case where plating is formed on the terminals. In this case, a metal containing aluminum is exposed on the terminal body 16, and an exposed portion 16A having poor solderability is formed. However, according to the above embodiment, such an exposed portion 16A is generated. Even if there is, the solderability can be improved by soldering the plated portion 17 made of a metal containing nickel. Therefore, it is possible to suppress poor connection of the solder S while reducing the manufacturing cost.
　また、ＦＰＣ２１におけるランド２４の近傍（ランド２４とメッキ部１７との半田付けが可能な程度に近い位置）には、端子部１５（端子）が挿通される貫通孔２５が貫通形成されている。
　このようにすれば、端子付きフレキシブルプリント基板３０の組付作業性を向上させることが可能になる。 Further, a through hole 25 through which the terminal portion 15 (terminal) is inserted is formed in the vicinity of the land 24 in the FPC 21 (a position close to a position where the land 24 and the plating portion 17 can be soldered).
By doing so, it becomes possible to improve the assembling workability of the flexible printed circuit board 30 with terminals.
　また、正極及び負極の電極部１２Ａ，１２Ｂを有する複数の蓄電素子１１の隣り合う電極部１２Ａ，１２Ｂ間を接続する接続部材１４を備え、端子部１５（端子）は、接続部材１４に一体に形成されている。
　このようにすれば、接続部材１４に端子部１５が一体に形成されているため、端子部１５（端子）を接続部材１４と別体に形成する構成と比較して、製造工程を簡素化することができる。 Further, a connecting member 14 for connecting adjacent electrode portions 12A and 12B of a plurality of power storage elements 11 having electrode portions 12A and 12B of the positive electrode and the negative electrode is provided, and the terminal portion 15 (terminal) is integrated with the connecting member 14. It is formed.
In this way, since the terminal portion 15 is integrally formed with the connecting member 14, the manufacturing process is simplified as compared with the configuration in which the terminal portion 15 (terminal) is formed separately from the connecting member 14. be able to.
　また、ＦＰＣ２１における接続部材１４側の面に重ねられる補強板２６を備える。
　このようにすれば、ＦＰＣ２１の剛性を高めるための補強板２６が接続部材１４側に重ねられることにより、補強板２６が半田付け作業の障害となりにくいため、半田付けの作業性を向上させることが可能になる。 Further, a reinforcing plate 26 is provided which is overlapped with the surface of the FPC 21 on the connecting member 14 side.
In this way, the reinforcing plate 26 for increasing the rigidity of the FPC 21 is overlapped on the connecting member 14 side, so that the reinforcing plate 26 does not easily interfere with the soldering work, so that the soldering workability can be improved. It will be possible.
　また、ＦＰＣ２１は、帯状に延びており、端子本体１６の板面は、前後方向（ＦＰＣ２１の延びる方向）に沿って配されている。
　このようにすれば、ＦＰＣ２１の左右方向（幅方向）の寸法を小さくできるため、端子付きフレキシブルプリント基板３０を小型化することが可能になる。 Further, the FPC 21 extends in a strip shape, and the plate surface of the terminal body 16 is arranged along the front-rear direction (the direction in which the FPC 21 extends).
By doing so, the dimensions of the FPC 21 in the left-right direction (width direction) can be reduced, so that the flexible printed circuit board 30 with terminals can be miniaturized.
　接続部材１４は、蓄電素子１１の電極部１２Ａ，１２Ｂ上に配され、ＦＰＣ２１におけるランド２４の近傍には、貫通孔２５が形成され、端子部１５は、ＦＰＣ２１に対する蓄電素子１１側から貫通孔２５に挿通されている。
　このようにすれば、例えば、ＦＰＣ２１に対する蓄電素子１１側とは反対側から貫通孔２５に端子部１５を挿通する場合と比較して、必ずしもＦＰＣ２１の上方側に端子部１５のスペースを確保する必要がないため、蓄電モジュール１０を低背化することが可能になる。 The connecting member 14 is arranged on the electrode portions 12A and 12B of the power storage element 11, a through hole 25 is formed in the vicinity of the land 24 in the FPC 21, and the terminal portion 15 has a through hole 25 from the power storage element 11 side with respect to the FPC 21. It is inserted in.
In this way, for example, it is necessary to secure a space for the terminal portion 15 on the upper side of the FPC 21 as compared with the case where the terminal portion 15 is inserted into the through hole 25 from the side opposite to the power storage element 11 side with respect to the FPC 21. Therefore, it is possible to reduce the height of the power storage module 10.
　本実施形態にかかる配線モジュール２０は、車両１に搭載されて用いられる車両用の配線モジュール２０であって、端子付きフレキシブルプリント基板３０を備える。 The wiring module 20 according to this embodiment is a wiring module 20 for a vehicle mounted on and used in a vehicle 1, and includes a flexible printed circuit board 30 with terminals.
　＜実施形態２＞
　次に、実施形態２を図７～図１０を参照しつつ説明する。実施形態２の端子付きフレキシブルプリント基板６０は、ＦＰＣ５６に半田付けされる板状の端子部４３の板面の向きが実施形態１とは異なるものである。他の構成は、上記実施形態と同様であるため、以下では実施形態１と同一の構成については同一の符号を付して説明を省略する。 <Embodiment 2>
Next, the second embodiment will be described with reference to FIGS. 7 to 10. In the flexible printed circuit board 60 with terminals of the second embodiment, the orientation of the plate surface of the plate-shaped terminal portion 43 soldered to the FPC 56 is different from that of the first embodiment. Since other configurations are the same as those in the above embodiment, the same configurations as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted below.
　接続部材４１は、例えばアルミニウム、アルミニウム合金等の金属からなり、図１０に示すように、接続部材本体１４Ａと、端子部４３とを備える。端子部４３は、接続部材４１（及び電極部１２Ａ，１２Ｂ）の電圧を検知するためのものであり、接続部材本体１４Ａにおける角部側からＦＰＣ５６側に板面に面一に外方にＬ字状に延出される延出部４４Ｂと、延出部４４Ｂの先端部で上方に起立し、ＦＰＣ５６の貫通孔５９に挿通される挿通部４４Ａとを備える。 The connecting member 41 is made of a metal such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 43 as shown in FIG. The terminal portion 43 is for detecting the voltage of the connecting member 41 (and the electrode portions 12A and 12B), and is L-shaped so as to be flush with the plate surface from the corner side to the FPC56 side of the connecting member main body 14A. The extension portion 44B extending in a shape and the insertion portion 44A standing upward at the tip end portion of the extension portion 44B and being inserted into the through hole 59 of the FPC 56 are provided.
　ＦＰＣ５６の複数の導電路２３は、端子部４３を半田付け可能な一対のランド５７に接続されている。一対のランド５７は、銅箔等の金属からなり、共に左右方向に長い長方形状とされている。一対のランド５７の間には、ＦＰＣ５６を貫通する貫通孔５９が貫通形成されている。貫通孔５９は、左右方向に長い長方形状とされている。 The plurality of conductive paths 23 of the FPC 56 are connected to a pair of lands 57 to which the terminal portion 43 can be soldered. The pair of lands 57 are made of metal such as copper foil, and both have a rectangular shape that is long in the left-right direction. A through hole 59 penetrating the FPC 56 is formed between the pair of lands 57. The through hole 59 has a rectangular shape that is long in the left-right direction.
　次に、蓄電モジュールの組み付けについて説明する。
　複数の蓄電素子１１の電極部１２Ａ，１２Ｂに複数の接続部材４１を載置する。また、絶縁プロテクタ２８における配設部２８Ａの上面に、補強板２６が重ねられたＦＰＣ５６の裏面を接着剤等で接着して配線モジュール２０を形成する。次に、複数の蓄電素子１１の上における所定の位置に配線モジュール２０を載置する（図２参照）。これにより、配線モジュール２０におけるＦＰＣ５６の複数の貫通孔５９に、複数の接続部材４１の複数の端子部４３が挿通された状態となる。 Next, the assembly of the power storage module will be described.
A plurality of connecting members 41 are placed on the electrode portions 12A and 12B of the plurality of power storage elements 11. Further, the back surface of the FPC 56 on which the reinforcing plate 26 is laminated is adhered to the upper surface of the arrangement portion 28A of the insulation protector 28 with an adhesive or the like to form the wiring module 20. Next, the wiring module 20 is placed at a predetermined position on the plurality of power storage elements 11 (see FIG. 2). As a result, the plurality of terminal portions 43 of the plurality of connecting members 41 are inserted into the plurality of through holes 59 of the FPC 56 in the wiring module 20.
　次に、接続部材４１を各電極部１２Ａ，１２Ｂにレーザー溶接するとともに、ＦＰＣ５６のランド５７及び接続部材４１の端子部４３に対して溶融状態の半田Ｓを付着する。このとき、図９に示すように、貫通孔５９内に半田Ｓが進入しつつ、端子部４３のメッキ部１７に半田Ｓが密着して半田Ｓのフィレットが形成される。一方、図８に示すように、アルミニウムを含む金属が露出した露出部１６Ａには、半田の濡れ性が良くないため、あまり半田Ｓが付着しない。そして、溶融状態の半田Ｓが固化することにより、複数の接続部材４１の端子部４３がＦＰＣ５６のランド５７に半田付けされた状態の端子付きフレキシブルプリント基板６０（図７）が形成されるとともに、ＦＰＣ５６、接続部材４１及び電極部１２Ａ，１２Ｂが接続された状態の蓄電モジュールが形成される。 Next, the connecting member 41 is laser-welded to the electrode portions 12A and 12B, and the molten solder S is adhered to the land 57 of the FPC 56 and the terminal portion 43 of the connecting member 41. At this time, as shown in FIG. 9, while the solder S enters the through hole 59, the solder S adheres to the plated portion 17 of the terminal portion 43 to form a fillet of the solder S. On the other hand, as shown in FIG. 8, the solder S does not adhere to the exposed portion 16A where the metal containing aluminum is exposed because the wettability of the solder is not good. Then, the molten solder S is solidified to form a flexible printed circuit board 60 (FIG. 7) with terminals in which the terminal portions 43 of the plurality of connecting members 41 are soldered to the land 57 of the FPC 56. A power storage module is formed in which the FPC 56, the connecting member 41, and the electrode portions 12A and 12B are connected.
　＜実施形態３＞
　次に、実施形態３を図１１～図１３を参照しつつ説明する。実施形態３の端子付きフレキシブルプリント基板７０は、図１１に示すように、端子部７３がＦＰＣ２１の上方側から貫通孔５９に挿通された状態で半田付けされるものである。他の構成は、上記実施形態と同様であるため、以下では上記実施形態と同一の構成については同一の符号を付して説明を省略する。 <Embodiment 3>
Next, the third embodiment will be described with reference to FIGS. 11 to 13. As shown in FIG. 11, the flexible printed circuit board 70 with terminals of the third embodiment is soldered in a state where the terminal portion 73 is inserted into the through hole 59 from the upper side of the FPC 21. Since other configurations are the same as those of the above-described embodiment, the same components as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted below.
　接続部材７１は、アルミニウム、アルミニウム合金等の金属からなり、図１３に示すように、接続部材本体１４Ａと、端子部７３とを備える。端子部７３は、接続部材７１（及び電極部１２Ａ，１２Ｂ）の電圧を検知するためのものであり、接続部材本体１４Ａの周縁部からＵ字状に湾曲した形状でＦＰＣ２１側に延びる延出部７４と、ＦＰＣ２１の貫通孔５９に挿通される挿通部７６とを備える。延出部７４は、接続部材本体１４Ａ及びＦＰＣ２１の上面よりも上方側に配されている。挿通部７６は、延出部７４の下方に延びる先端部からＦＰＣ２１の延び方向に沿って帯状に延びている。 The connecting member 71 is made of a metal such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 73 as shown in FIG. The terminal portion 73 is for detecting the voltage of the connecting member 71 (and the electrode portions 12A and 12B), and is an extending portion extending from the peripheral portion of the connecting member main body 14A to the FPC21 side in a U-shaped curve. A 74 and an insertion portion 76 to be inserted into the through hole 59 of the FPC 21 are provided. The extending portion 74 is arranged above the upper surfaces of the connecting member main body 14A and the FPC 21. The insertion portion 76 extends in a band shape along the extending direction of the FPC 21 from the tip portion extending below the extending portion 74.
　次に、蓄電モジュールの組み付けについて説明する。
　絶縁プロテクタ２８における配設部２８Ａの上面に、補強板２６が重ねられたＦＰＣ２１の裏面を接着剤等で接着して固定し、配線モジュール２０を形成し、複数の蓄電素子１１の上における所定の位置に配線モジュール２０を載置する（図２参照）。次に、配線モジュール２０におけるＦＰＣ２１の複数の貫通孔５９に、複数の接続部材７１の複数の端子部７３を挿通しつつ、複数の接続部材７１を複数の蓄電素子１１の電極部１２Ａ，１２Ｂに載置する（図２参照）。 Next, the assembly of the power storage module will be described.
The back surface of the FPC 21 on which the reinforcing plate 26 is laminated is adhered and fixed to the upper surface of the arrangement portion 28A of the insulation protector 28 with an adhesive or the like to form a wiring module 20, and a predetermined number of storage elements 11 are formed. The wiring module 20 is placed at the position (see FIG. 2). Next, while inserting the plurality of terminal portions 73 of the plurality of connecting members 71 into the plurality of through holes 59 of the FPC 21 in the wiring module 20, the plurality of connecting members 71 are inserted into the electrode portions 12A and 12B of the plurality of power storage elements 11. Place it (see Fig. 2).
　次に、接続部材７１を各電極部１２Ａ，１２Ｂにレーザー溶接するとともに、ＦＰＣ２１のランド２４及び接続部材７１の端子部７３に対して溶融状態の半田Ｓを付着する。このとき、図１２に示すように、貫通孔２５内に半田Ｓが進入しつつ、端子部７３のメッキ部１７に半田Ｓが密着して半田Ｓのフィレットが形成される。一方、アルミニウムを含む金属が露出した図示しない露出部１６Ａには、半田の濡れ性が良くないため、あまり半田Ｓが付着しない。溶融状態の半田Ｓが固化することにより、複数の接続部材７１の端子部７３がＦＰＣ２１のランド２４に半田付けされた状態の端子付きフレキシブルプリント基板７０（図１１）が形成される。また、ＦＰＣ２１、接続部材７１及び電極部１２Ａ，１２Ｂが接続された状態の蓄電モジュールが形成される。 Next, the connecting member 71 is laser-welded to the electrode portions 12A and 12B, and the molten solder S is adhered to the land 24 of the FPC 21 and the terminal portion 73 of the connecting member 71. At this time, as shown in FIG. 12, while the solder S enters the through hole 25, the solder S adheres to the plated portion 17 of the terminal portion 73 to form a fillet of the solder S. On the other hand, the solder S does not adhere to the exposed portion 16A (not shown) where the metal containing aluminum is exposed because the wettability of the solder is not good. By solidifying the solder S in the molten state, a flexible printed circuit board 70 (FIG. 11) with terminals is formed in which the terminal portions 73 of the plurality of connecting members 71 are soldered to the land 24 of the FPC 21. Further, a power storage module is formed in which the FPC 21, the connecting member 71, and the electrode portions 12A and 12B are connected.
　＜実施形態４＞
　次に、実施形態４を図１４，図１５を参照しつつ説明する。実施形態４の端子付きフレキシブルプリント基板８０は、実施形態３とは端子部８３の形状が異なるものである。他の構成は、上記実施形態と同様であるため、以下では上記実施形態と同一の構成については同一の符号を付して説明を省略する。 <Embodiment 4>
Next, the fourth embodiment will be described with reference to FIGS. 14 and 15. The flexible printed circuit board 80 with terminals of the fourth embodiment has a different shape of the terminal portion 83 from the third embodiment. Since other configurations are the same as those of the above-described embodiment, the same components as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted below.
　接続部材８１は、アルミニウム、アルミニウム合金等の金属からなり、図１５に示すように、接続部材本体１４Ａと、端子部８３とを備える。端子部８３は、接続部材８１（及び電極部１２Ａ，１２Ｂ）の電圧を検知するためのものであり、接続部材本体１４Ａの縁部からＦＰＣ２１側に延びる延出部８５と、延出部８５の先端部から円弧状に曲がってＦＰＣ２１の貫通孔２５に挿通される挿通部８７とを備える。延出部８５には、軽量化のための抜き孔８８が貫通形成されている。 The connecting member 81 is made of a metal such as aluminum or an aluminum alloy, and includes a connecting member main body 14A and a terminal portion 83 as shown in FIG. The terminal portion 83 is for detecting the voltage of the connecting member 81 (and the electrode portions 12A and 12B), and the extending portion 85 extending from the edge portion of the connecting member main body 14A toward the FPC21 side and the extending portion 85 of the extending portion 85. It is provided with an insertion portion 87 which is bent in an arc shape from the tip portion and is inserted into the through hole 25 of the FPC 21. A punch hole 88 for weight reduction is formed through the extending portion 85.
　次に、蓄電モジュールの組み付けについて説明する。
　絶縁プロテクタ２８における配設部２８Ａの上面に、補強板２６が重ねられたＦＰＣ２１の裏面を接着剤等で接着して固定し、配線モジュール２０を形成する。次に、複数の蓄電素子１１の上における所定の位置に配線モジュール２０を載置する。次に、配線モジュール２０におけるＦＰＣ２１の複数の貫通孔２５に、複数の接続部材８１の複数の端子部８３を挿通しつつ、複数の接続部材８１を複数の蓄電素子１１の電極部１２Ａ，１２Ｂに載置する。 Next, the assembly of the power storage module will be described.
The back surface of the FPC 21 on which the reinforcing plate 26 is superposed is adhered and fixed with an adhesive or the like on the upper surface of the arrangement portion 28A of the insulation protector 28 to form the wiring module 20. Next, the wiring module 20 is placed at a predetermined position on the plurality of power storage elements 11. Next, while inserting the plurality of terminal portions 83 of the plurality of connecting members 81 into the plurality of through holes 25 of the FPC 21 in the wiring module 20, the plurality of connecting members 81 are inserted into the electrode portions 12A and 12B of the plurality of power storage elements 11. Place it.
　次に、接続部材８１を各電極部１２Ａ，１２Ｂにレーザー溶接するとともに、ＦＰＣ２１のランド２４及び接続部材８１の端子部８３に対して溶融状態の半田Ｓを付着する。このとき、貫通孔２５内に半田Ｓが進入しつつ、端子部８３のメッキ部１７に半田Ｓが密着して半田Ｓのフィレットが形成される。一方、端子部８３におけるアルミニウムを含む金属が露出した露出部１６Ａには、半田の濡れ性が良くないため、あまり半田Ｓが付着しない。 Next, the connecting member 81 is laser-welded to the electrode portions 12A and 12B, and the molten solder S is adhered to the land 24 of the FPC 21 and the terminal portion 83 of the connecting member 81. At this time, while the solder S enters the through hole 25, the solder S adheres to the plated portion 17 of the terminal portion 83 to form a fillet of the solder S. On the other hand, the solder S does not adhere to the exposed portion 16A of the terminal portion 83 where the metal including aluminum is exposed because the wettability of the solder is not good.
　溶融状態の半田Ｓが固化することにより、複数の接続部材８１の端子部８３がＦＰＣ２１のランド２４に半田付けされた状態の端子付きフレキシブルプリント基板８０（図１４）が形成される。また、ＦＰＣ２１、接続部材８１及び電極部１２Ａ，１２Ｂが接続された状態の蓄電モジュールが形成される。 By solidifying the solder S in the molten state, a flexible printed circuit board 80 (FIG. 14) with terminals is formed in which the terminal portions 83 of the plurality of connecting members 81 are soldered to the land 24 of the FPC 21. Further, a power storage module is formed in which the FPC 21, the connecting member 81, and the electrode portions 12A and 12B are connected.
　＜実施形態５＞
　次に、実施形態５について、図１６を参照しつつ説明する。実施形態５の端子付きフレキシブルプリント基板９０は、ＦＰＣ２１（における貫通孔２５の近傍ではない位置）にランド９１を設け、接続部材（接続部材は端子部９３のみ図示し、他は省略）の端子部９３（端子）の先端部がＦＰＣ２１の表面のランド９１に載置された状態で半田付けされるものである。他の構成は、上記実施形態と同様であるため、以下では上記実施形態と同一の構成については同一の符号を付して説明を省略する。 <Embodiment 5>
Next, the fifth embodiment will be described with reference to FIG. In the flexible printed circuit board 90 with terminals according to the fifth embodiment, a land 91 is provided in the FPC 21 (a position not near the through hole 25 in the), and the terminal portion of the connecting member (the connecting member is shown only in the terminal portion 93 and the others are omitted). The tip of 93 (terminal) is soldered while being placed on the land 91 on the surface of the FPC 21. Since other configurations are the same as those of the above-described embodiment, the same components as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted below.
　ＦＰＣ２１の表面には導電路２３に電気的に接続されたランド９１が形成されている。端子部９３の下端面は、ランド９１に接触している。ＦＰＣ２１のランド９１と、接続部材８１の端子部９３とに溶融状態の半田Ｓを塗布すると、メッキ部１７及びランド９１に半田Ｓが密着して半田Ｓのフィレットが形成される。なお、端子部９３におけるアルミニウムを含む金属が露出した露出部１６Ａ（不図示）には、あまり半田Ｓが付着しない。 A land 91 electrically connected to the conductive path 23 is formed on the surface of the FPC 21. The lower end surface of the terminal portion 93 is in contact with the land 91. When the molten solder S is applied to the land 91 of the FPC 21 and the terminal portion 93 of the connecting member 81, the solder S adheres to the plated portion 17 and the land 91 to form a fillet of the solder S. Note that the solder S does not adhere to the exposed portion 16A (not shown) where the metal containing aluminum is exposed in the terminal portion 93.
　＜他の実施形態＞
　本明細書に記載された技術は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本明細書に記載された技術の技術的範囲に含まれる。
（１）ランド２４に半田付けされる端子部１５，４３，７３，８３，９３は、接続部材１４と一体に形成されたが、これに限られず、例えば、接続部材とは別体の端子部（端子）を形成し、接続部材とは別体の端子部（端子）がランド２４に半田付けされるようにしてもよい。この場合の端子部（端子）は、接続部材に対して、例えば、溶接や半田付け等により接続することができる。 <Other embodiments>
The techniques described herein are not limited to the embodiments described above and in the drawings, and for example, the following embodiments are also included in the technical scope of the techniques described herein.
(1) The terminal portions 15, 43, 73, 83, 93 soldered to the land 24 are integrally formed with the connecting member 14, but are not limited to this, and for example, the terminal portions separate from the connecting member (Terminals) may be formed so that a terminal portion (terminal) separate from the connecting member is soldered to the land 24. The terminal portion (terminal) in this case can be connected to the connecting member by, for example, welding or soldering.
１：　車両
２：　蓄電パック
３：　ＰＣＵ
４：　ワイヤーハーネス
１０：　蓄電モジュール
１１：　蓄電素子
１２Ａ，１２Ｂ：　電極部
１４，４１，７１，８１：　接続部材
１４Ａ：　接続部材本体
１４Ｂ：　位置決め孔
１５，４３，７３，８３，９３：　端子部
１５Ａ，４４Ａ，７６，８７：　挿通部
１６：　端子本体
１６Ａ：　露出部
１７：　メッキ部
２０：　配線モジュール
２１，５６：　ＦＰＣ（フレキシブルプリント基板）
２２：　絶縁樹脂フィルム
２３：　導電路
２４，５７，９１：　ランド
２５，５９：　貫通孔
２６：　補強板
２８：　絶縁プロテクタ
２８Ａ：　配設部
２９：　仕切壁
３０，６０，７０，８０，９０：　端子付きフレキシブルプリント基板
１５Ｂ，４４Ｂ，７４，８５：　延出部
８７：　挿通部
８８：　抜き孔
Ｓ：　半田 1: Vehicle 2: Storage pack 3: PCU
4: Wire harness 10: Power storage module 11: Power storage element 12A, 12B: Electrode portion 14, 41, 71, 81: Connection member 14A: Connection member main body 14B: Positioning hole 15, 43, 73, 83, 93: Terminal portion 15A , 44A, 76, 87: Insertion part 16: Terminal body 16A: Exposed part 17: Plating part 20: Wiring module 21, 56: FPC (Flexible printed circuit board)
22: Insulating resin film 23: Conductive paths 24, 57, 91: Lands 25, 59: Through holes 26: Reinforcing plate 28: Insulating protector 28A: Arrangement 29: Partition walls 30, 60, 70, 80, 90: Terminals Flexible printed circuit board with 15B, 44B, 74, 85: Extension 87: Insertion 88: Drilling hole S: Solder

Claims (9)

  1. 導電路を有するフレキシブルプリント基板と、前記導電路に半田付けされた端子と、を備える端子付きフレキシブルプリント基板であって、
    　前記フレキシブルプリント基板は、前記導電路に電気的に接続され、前記端子を半田付けにより接続可能とされたランドを有し、
    　前記端子は、アルミニウムを含む金属からなる板状の端子本体と、
    　前記端子本体の板面に密着し、ニッケルを含む金属からなるメッキ部と、を備え、
    　前記ランドと前記メッキ部とが半田付けされている、端子付きフレキシブルプリント基板。     A flexible printed circuit board with terminals including a flexible printed circuit board having a conductive path and terminals soldered to the conductive path.
    The flexible printed circuit board has a land that is electrically connected to the conductive path and the terminals can be connected by soldering.
    The terminals are a plate-shaped terminal body made of metal containing aluminum, and
    It is provided with a plated portion made of a metal containing nickel, which is in close contact with the plate surface of the terminal body.
    A flexible printed circuit board with terminals to which the land and the plated portion are soldered.
  2. 前記端子本体は、前記板面とは異なる面に前記アルミニウムを含む金属が露出した露出部を備える請求項１に記載の端子付きフレキシブルプリント基板。 The flexible printed circuit board with terminals according to claim 1, wherein the terminal body includes an exposed portion in which the metal containing aluminum is exposed on a surface different from the plate surface.
  3. 前記フレキシブルプリント基板における前記ランドの近傍には、前記端子が挿通される貫通孔が形成されている請求項１または請求項２に記載の端子付きフレキシブルプリント基板。 The flexible printed circuit board with terminals according to claim 1 or 2, wherein a through hole through which the terminals are inserted is formed in the vicinity of the land on the flexible printed circuit board.
  4. 正極及び負極の電極部を有する複数の蓄電素子の隣り合う前記電極部間を接続する接続部材を備え、
    　前記端子は、接続部材に一体に形成されている請求項１から請求項３のいずれか一項に記載の端子付きフレキシブルプリント基板。     A connecting member for connecting between adjacent electrode portions of a plurality of power storage elements having positive electrode and negative electrode portions is provided.
    The flexible printed circuit board with terminals according to any one of claims 1 to 3, wherein the terminals are integrally formed with a connecting member.
  5. 前記フレキシブルプリント基板における前記接続部材側の面に重ねられる補強板を備える請求項４に記載の端子付きフレキシブルプリント基板。 The flexible printed circuit board with terminals according to claim 4, further comprising a reinforcing plate that is overlapped with the surface of the flexible printed circuit board on the connecting member side.
  6. 　前記フレキシブルプリント基板は、帯状に延びており、
    　前記端子本体の板面は、前記フレキシブルプリント基板の延びる方向に沿って配されている請求項１から請求項５のいずれか一項に記載の端子付きフレキシブルプリント基板。     The flexible printed circuit board extends in a strip shape and
    The flexible printed circuit board with terminals according to any one of claims 1 to 5, wherein the plate surface of the terminal body is arranged along the extending direction of the flexible printed circuit board.
  7. 　車両に搭載されて用いられる車両用の配線モジュールであって、請求項１から請求項６のいずれか１項に記載の端子付きフレキシブルプリント基板を備えた配線モジュール。 A wiring module for a vehicle that is mounted on a vehicle and is provided with a flexible printed circuit board with a terminal according to any one of claims 1 to 6.
  8. 請求項１から請求項６のいずれか一項に記載の端子付きフレキシブルプリント基板と、
    　正極及び負極の電極部を有する複数の蓄電素子と、
    　前記複数の蓄電素子の隣り合う前記電極部間を接続する接続部材と、を備える蓄電モジュール。     The flexible printed circuit board with terminals according to any one of claims 1 to 6.
    A plurality of power storage elements having positive electrode and negative electrode portions,
    A power storage module including a connecting member for connecting the plurality of power storage elements to each other adjacent electrode portions.
  9. 前記接続部材は、前記蓄電素子の前記電極部上に配され、
    　前記フレキシブルプリント基板における前記ランドの近傍には、貫通孔が形成され、
    　前記端子は、前記フレキシブルプリント基板に対する前記蓄電素子側から前記貫通孔に挿通されている請求項８に記載の蓄電モジュール。     The connecting member is arranged on the electrode portion of the power storage element.
    A through hole is formed in the vicinity of the land on the flexible printed circuit board.
    The power storage module according to claim 8, wherein the terminal is inserted into the through hole from the power storage element side with respect to the flexible printed circuit board.
PCT/JP2020/023213 2019-06-19 2020-06-12 Flexible printed circuit board with terminal, wiring module, and energy storage module WO2020255877A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010113455A1 (en) * 2009-03-31 2010-10-07 三洋電機株式会社 Battery module, battery system, and electric vehicle
JP2011171080A (en) * 2010-02-17 2011-09-01 Toshiba Corp Battery part, battery pack, and method for manufacturing battery pack
JP2014220157A (en) * 2013-05-09 2014-11-20 トヨタ自動車株式会社 Power storage device, board and assembly method of power storage device
JP2015069953A (en) * 2013-10-01 2015-04-13 株式会社オートネットワーク技術研究所 Electrical connection structure and wiring module using the same
WO2016199939A1 (en) * 2015-06-12 2016-12-15 株式会社 東芝 Battery and assembled battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010113455A1 (en) * 2009-03-31 2010-10-07 三洋電機株式会社 Battery module, battery system, and electric vehicle
JP2011171080A (en) * 2010-02-17 2011-09-01 Toshiba Corp Battery part, battery pack, and method for manufacturing battery pack
JP2014220157A (en) * 2013-05-09 2014-11-20 トヨタ自動車株式会社 Power storage device, board and assembly method of power storage device
JP2015069953A (en) * 2013-10-01 2015-04-13 株式会社オートネットワーク技術研究所 Electrical connection structure and wiring module using the same
WO2016199939A1 (en) * 2015-06-12 2016-12-15 株式会社 東芝 Battery and assembled battery

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