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WO2017014049A1 - Module de câblage et module de stockage d'énergie - Google Patents

Module de câblage et module de stockage d'énergie Download PDF

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Publication number
WO2017014049A1
WO2017014049A1 PCT/JP2016/069974 JP2016069974W WO2017014049A1 WO 2017014049 A1 WO2017014049 A1 WO 2017014049A1 JP 2016069974 W JP2016069974 W JP 2016069974W WO 2017014049 A1 WO2017014049 A1 WO 2017014049A1
Authority
WO
WIPO (PCT)
Prior art keywords
bus bar
metal
detection terminal
terminal
welded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/069974
Other languages
English (en)
Japanese (ja)
Inventor
治 中山
直樹 福島
克司 宮崎
成志 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015256598A external-priority patent/JP6590212B2/ja
Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to CN201680039353.XA priority Critical patent/CN107710457B/zh
Priority to US15/744,283 priority patent/US10305083B2/en
Publication of WO2017014049A1 publication Critical patent/WO2017014049A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring 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
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a wiring module and a storage module in which the wiring module is attached to a storage element group.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2011-210480 describes a bus bar connected to a battery in which aluminum is used as a positive electrode and copper is used as a negative electrode.
  • a positive electrode connection portion made of aluminum and a negative electrode connection portion made of copper are integrally coupled by metallic bonding.
  • the positive electrode and the negative electrode described above are in the shape of a bolt in which a thread is formed on the outer peripheral surface. Insertion holes through which the positive electrode and the negative electrode are inserted are formed in the bus bar. In a state in which the positive electrode and the negative electrode are respectively inserted into the insertion holes of the bus bar, the bus bar is electrically connected to the positive electrode and the negative electrode by screwing the nut to the positive electrode and the negative electrode.
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2013-16382 describes a configuration in which a detection terminal is connected to an electrode terminal of a single battery.
  • the detection terminal has an insertion hole through which a bolt is inserted.
  • a bolt is screwed into a screw hole formed in the electrode terminal, so that the detection terminal and the electrode terminal are tightened together and electrically connected. It has become.
  • the bus bar described in Patent Document 1 has a problem in that the manufacturing cost is increased because the positive electrode connection portion and the negative electrode connection portion are metallized in an isotropic pressure environment of ultrahigh pressure. Then, it is possible to weld a positive electrode connection and a negative electrode connection as a virtual technique.
  • the detection terminal can not be fastened together with the bus bar to the electrode of the battery. Then, welding a detection terminal to a bus bar is considered as a virtual technique.
  • the area of the portion where the bus bar and the electrode of the battery are welded should be as wide as possible in order to ensure the electrical connection reliability. For this reason, it is not preferable to weld the detection terminal to the weld between the bus bar and the electrode of the battery.
  • the technology disclosed in the present specification is completed based on the above circumstances, and it is an object of the present invention to provide a technology for improving the reliability of electrical connection between a bus bar and a detection terminal.
  • the technology disclosed in the present specification is a wiring module attached to a storage element group in which a plurality of storage elements having a positive electrode made of a first metal and a negative electrode made of a second metal different from the first metal are arranged.
  • a bus bar having a first metal portion made of a first metal and a second metal portion made of the second metal, an insulation protector for holding the bus bar, and a detection terminal connected to the bus bar; Has an overlapping portion in which a portion of the first metal portion and a portion of the second metal portion overlap, and in the overlapping portion, welding is performed in which the first metal portion and the second metal portion are welded
  • the bus bar has a terminal connection portion on which the detection terminal is overlapped at a position different from the position of the welding portion.
  • the position of the terminal connection portion is different from the welded portion in which the first metal portion and the second metal portion are welded.
  • corrugation resulting from welding with a 1st metal part and a 2nd metal part is not formed in the surface of a terminal connection part.
  • the detection terminal is superimposed on the flat terminal connection portion as compared with the welded portion, it is possible to improve the electrical connection reliability between the detection terminal and the bus bar.
  • the overlapping portion preferably has a locking portion for holding the detection terminal to the terminal connection portion, and the detection terminal preferably has a locking receiving portion for locking the locking portion.
  • the detection terminal can be held at the terminal connection portion of the overlapping portion by locking the locking portion and the locking receiving portion.
  • the terminal connection portion is preferably provided at a position different from the position of the welding portion in the overlapping portion.
  • the region different from the overlapping portion is relatively flat, so that the bus bar can be suitably connected to the positive electrode and the negative electrode. Thereby, the electrical connection reliability between the bus bar and the positive electrode and the negative electrode can be improved.
  • the terminal connection portion be provided at a position different from the position of the overlapping portion.
  • the detection terminal is connected to the bus bar at a relatively flat portion of the bus bar.
  • the electrical connection reliability between the detection terminal and the bus bar can be further improved.
  • the detection terminal and the bus bar be welded on the terminal connection portion.
  • the bus bar and the detection terminal can be electrically connected by a simple method of welding, the manufacturing cost can be reduced.
  • the storage module has the above-described wiring module attached to the storage element group, and the first metal portion of the bus bar is welded to the positive electrode, and the second metal portion of the bus bar is welded to the negative electrode. Is preferred.
  • the bus bar and the positive electrode, and the bus bar and the negative electrode can be connected by welding. Thereby, by screwing a bolt and a nut, work efficiency can be improved as compared with the case where the bus bar is connected to the positive electrode and the negative electrode.
  • the electrical connection reliability between the bus bar and the detection terminal can be improved.
  • the wiring module 1 of the present embodiment is attached to a storage element group 60 configured by arranging a plurality of storage elements 61 to configure a storage module M.
  • the storage module M is mounted on a vehicle (not shown) such as an electric vehicle or a hybrid vehicle, and is used as a power source for driving the vehicle.
  • symbol may be attached
  • the storage element 61 of the present embodiment is a secondary battery. As shown in FIG. 1, a plurality of storage elements 61 are arranged in a line to form a storage element group 60.
  • each storage element 61 has a rectangular parallelepiped shape with a flat outer shape.
  • a pair of electrode terminals 63 is disposed on the top surface of the storage element 61 at positions near both ends in the longitudinal direction (front-rear direction).
  • Each electrode terminal 63 has a rectangular cylindrical shape and protrudes upward from the upper surface of the storage element 61 (see FIG. 12).
  • One of the electrode terminals 63 is a positive electrode 63A, and the other is a negative electrode 63B.
  • the positive electrode 63A is made of aluminum or an aluminum alloy (an example of the first metal).
  • the negative electrode 63B is made of copper or a copper alloy (an example of a second metal).
  • the locked portion 66 has a form in which a hole 68 is provided at the center of a recess 67 recessed from the top surface of the storage element 61 (see FIGS. 1 and 12).
  • electrode terminals 63 of different polarities are adjacent to each other in two adjacent storage elements 61 (that is, the positive electrode 63A of one storage element 61 and another storage element 61 adjacent thereto). And the negative electrodes 63B of each of the
  • Wiring module 1 is assembled on the top surface of storage element group 60. Specifically, the wiring module 1 is assembled on the surface of the storage element group 60 that is formed by the upper surface of each storage element 61. The wiring module 1 is disposed on the insulation protector 10, the bus bar 40 connected to the positive electrode 63A and the negative electrode 63B of the adjacent storage elements 61 held by the insulation protector 10, and detection detected by being superimposed on the bus bar 40 A terminal 50 and a wire 58 connected to the detection terminal 50 are provided.
  • the bus bar 40 is made of a substantially rectangular metal plate material. The four corners of the bus bar 40 are recessed inward.
  • the bus bar 40 has a first metal portion 42 made of aluminum or an aluminum alloy and a second metal portion 43 made of copper or a copper alloy.
  • the first metal portion 42 is disposed on the left side, and the second metal portion 43 is disposed on the right side.
  • the first metal portion 42 is made of the same metal as the positive electrode 63A.
  • the second metal portion 43 is made of the same metal as the negative electrode 63B. Further, the first metal portion 42 and the second metal portion 43 are made of different metals.
  • the right end portion of the first metal portion 42 is cranked upward. As shown in FIGS. 3 and 4, the right end portion of the first metal portion 42 overlaps the left end portion of the second metal portion 43. A portion where the first metal portion 42 and the second metal portion 43 overlap is referred to as an overlapping portion 44. As shown in FIG. 2, the overlapping portion 44 is located at substantially the center of the bus bar 40 in the left-right direction.
  • the overlapping portion 44 has a welded portion 45 in which the first metal portion 42 and the second metal portion 43 are welded at a position slightly behind the center in the front-rear direction.
  • the welds 45 are shown shaded.
  • the overlapping portion 44 is a rectangular lock for locking an insertion portion 55 (an example of a lock receiving portion) of the detection terminal 50 described later at a position slightly ahead of the center in the front-rear direction.
  • a hole 41 is formed through the plate surface. The insertion portion 55 is engaged with the hole edge portion 41A (an example of the engagement portion) of the engagement hole 41.
  • a region of the overlapping portion 44 in front of the welding portion 45 and in front of the locking hole 41 is a terminal connection portion 46 in which the detection terminal 50 is overlapped from above.
  • the terminal connection portion 46 the first metal portion 42 and the second metal portion 43 are not welded.
  • connection unit 11 disposed at the right end in FIG. 5 is a first connection unit 11A
  • the connection unit 11 disposed next to it (center) is a second connection unit 11B
  • a connection unit disposed at the left end is a third connection unit 11C.
  • connection unit 11 when not distinguishing 1st connection unit 11A, 2nd connection unit 11B, and 3rd connection unit 11C, it demonstrates as connection unit 11.
  • FIG. 11 when not distinguishing 1st connection unit 11A, 2nd connection unit 11B, and 3rd connection unit 11C, it demonstrates as connection unit 11.
  • connection unit 11 is connected to a pair of bus bar holding portions 12 which are opened in the vertical direction and which accommodate and hold the bus bar 40, and detection terminals 50 arranged to overlap the bus bar 40.
  • a pair of wire receiving grooves 30 for receiving the wires 58 is provided.
  • the bus bar holding portion 12 has a rectangular cylindrical housing wall 13.
  • the bus bar 40 is held inside the housing wall 13.
  • the busbars 40 held by the adjacent busbar holding portions 12 are held in an insulated state by the housing wall 13.
  • the housing wall 13 is composed of a pair of long walls 14 and a pair of short walls 15 connecting the pair of long walls 14.
  • the dimensions of the pair of long walls 14 and the short wall 15 are set so as to be able to accommodate the pair of electrode terminals 63 disposed adjacent to each other on the inside of the housing wall 13.
  • the housing wall 13 also functions as a protective wall of the adjacent electrode terminal 63.
  • a pair of housing walls 13 provided in one connection unit 11 are long walls 14 corresponding to one electrode terminal 63 so that the long walls 14 face each other in parallel. Are offset in the direction of extension (left and right direction).
  • a pair of long walls 14 located outside in the front-rear direction is an outer long wall 14A
  • a pair of long walls 14 located inside is The long wall 14B is used.
  • a part 16 is provided at a substantially central portion in the up and down direction of the pair of short walls 15.
  • the pair of mounting portions 16 support both ends in the longitudinal direction (left and right direction) of the bus bar 40 housed in the housing wall 13 from below (see FIG. 10).
  • first retaining piece 17 for preventing the bus bar 40 accommodated in the accommodation wall 13 from coming off from above is provided.
  • second retaining pieces 18 for preventing the bus bar 40 housed in the housing wall 13 from coming off from above is provided slightly closer to both ends from the central portion in the longitudinal direction of the inner long wall 14B.
  • Each of the first retaining piece 17 and the second retaining piece 18 is in the form of a leaf spring that extends obliquely downward from the upper end of the long wall 14 to the inside of the accommodation wall 13, and approaches the long wall 14. Alternatively, it can be elastically deformed in a direction away from it.
  • the outlet 19 is formed.
  • the wire outlet 19 is continuous with a grooved barrel holding groove 34 that connects the bus bar holding portion 12 and a wire receiving groove 30 described later.
  • the bus bar holding portion 12 of the present embodiment is provided with a welding protection portion 20.
  • the welding protection portion 20 is arranged to bridge the outer long wall 14A and the inner long wall 14B in the front-rear direction at the center in the longitudinal direction (left-right direction).
  • the vicinity of the center in the front-rear direction is depressed downward and is one step lower, and this lowered portion escapes the insertion portion 55 of the detection terminal 50 described later It is considered as a relief recess 23.
  • the locking holes 41 of the bus bar 40 described above are set such that at least a portion thereof is disposed at a position corresponding to the relief recess 23 (see FIG. 10).
  • the pair of wire housing grooves 30 each have a pair of groove wall portions 31 and a bottom portion 32, and each bus bar holding portion between the pair of bus bar holding portions 12 of one connection unit 11. It is provided to be adjacent to 12 and to extend along the longitudinal direction (front-rear direction) of the bus bar holding portion 12.
  • an electric wire introduction for introducing the electric wire 58 drawn out from the bus bar holding portion 12 into the electric wire receiving groove 30 A mouth 33 is formed.
  • connection portion 35 As shown in FIG. 6, a pair of electric wire receiving grooves 30 provided in one connection unit 11 is connected by a connection portion 35.
  • the connecting portion 35 is a plate-like member, and connects the lower ends of the groove wall portions 31B of the pair of wire housing grooves 30 to each other.
  • the pair of bus bar holding portions 12 are arranged to be mutually deviated by one dimension of the electrode terminal 63 along the longitudinal direction (left and right direction), and therefore extend from the respective groove wall portions 31B
  • the connection portion 35 thus formed is connected in such a manner as to be shifted in the left-right direction by a dimension of one electrode terminal 63 (see FIG. 5).
  • the connecting portion 35 has a substantially Z shape in plan view as a whole.
  • a pair of locking pieces 36 projecting downward is provided at a position corresponding to the locked portion 66 of the storage element 61. It is done.
  • the lower end portion of the locking piece 36 is provided with a locking protrusion 36A that protrudes outward, and the locking protrusion 36A is locked to the edge of the hole 68 of the locked portion 66 By doing this, the insulation protector 10 is fixed to the storage element group 60.
  • connecting portion 35 is provided with a unit engaging portion 37 and / or a unit engagement receiving portion 38 for connecting to the adjacent connecting unit 11.
  • the first connecting unit 11A includes a pair of side edges of the connecting portion 35 located on the side of the second connecting unit 11B to the second connecting unit 11B.
  • a pair of plate-like unit engaging portions 37 extending toward the end is provided.
  • the unit engagement portion 37 has an engagement claw at its tip.
  • the connecting portion 35 of the second connecting unit 11B is provided with a thick portion at a position corresponding to the unit engaging portion 37 of the first connecting unit 11A.
  • the first connecting unit 11A is provided.
  • a concave unit engagement receiving portion 38 capable of receiving the unit engaging portion 37 is provided.
  • the unit engagement receiving portion 38 is provided with a protruding piece with which the engaging claw of the adjacent connection unit 11 engages.
  • the side edge positioned on the third connecting unit 11C side is unit engaging similar to the unit engaging portion 37 of the first connecting unit 11A.
  • a pair of sections 37 is provided.
  • the side edge located on the second connecting unit 11B side is located at a position corresponding to the unit engaging portion 37 of the second connecting unit 11B.
  • a pair of unit engagement receiving portions 38 similar to the unit engagement receiving portion 38 of the second connection unit 11B is provided.
  • the detection terminal 50 is for detecting the voltage of the storage element 61, and is electrically connected to the electrode terminal 63 of the storage element 61 via the bus bar 40.
  • the detection terminal 50 is formed by pressing a metal plate such as copper, copper alloy, stainless steel, or aluminum into a predetermined shape.
  • the surface of the detection terminal 50 may be plated with a metal such as tin or nickel.
  • the detection terminal 50 of the present embodiment includes a long and narrow rectangular plate-like terminal main body 51, a wire barrel 53 provided adjacent to the terminal main body 51, and a wire barrel And an insulation barrel 54 provided side by side with 53.
  • the width dimension of the terminal main body 51 is set to be equal to or slightly smaller than the width dimension of the welding protection portion 20.
  • the wire barrel 53 is crimped and crimped to wrap around the exposed core of the wire 58.
  • the insulation barrel 54 is crimped so as to be wound around the insulation coating of the wire 58.
  • the wire barrel 53 and the insulation barrel 54 are formed to rise from one surface side of the terminal main body 51 toward one direction (the same direction).
  • the insertion portion 55 for locking the detection terminal 50 by inserting into the locking hole 41 of the bus bar 40 described above at the end edge portion of the terminal main body 51 opposite to the wire barrel 53 is the wire barrel 53
  • the insulation barrel 54 is extended in a crank shape so as to protrude in the opposite direction to the rising direction of the insulation barrel 54.
  • the detection terminal 50 is electrically connected to the wire 58 by being crimped so that the wire barrel 53 is wound around the core of the wire 58. Further, the detection terminal 50 is joined to the bus bar 40 by laser welding. The other end of the electric wire 58 is connected to an ECU (not shown) or the like, and the voltage of the storage element 61 is detected by the ECU or the like.
  • the first metal portion 42 and the second metal portion 43 are formed in a predetermined shape by pressing a metal plate material.
  • the edge of the first metal portion 42 and the edge of the second metal portion 43 are overlapped to form an overlapping portion 44.
  • the welded portion 45 in the overlapping portion 44 is welded by a known welding method.
  • the welding method any method such as laser welding, ultrasonic welding, resistance welding, arc welding, etc. may be adopted as needed.
  • connection units 11 are connected to one another. Specifically, the pair of unit engagement portions 37 of the second connection unit 11B is engaged with the pair of unit engagement receivers 38 of the third connection unit 11C adjacent thereto. Thereby, the second connection unit 11B and the third connection unit 11C are connected. In the same procedure, the insulation protector 10 is assembled by assembling the remaining first connection unit 11A to the second connection unit 11B (see FIG. 5).
  • a clearance is set between the tip of the unit engagement portion 37 and the back end of the unit engagement receiving portion 38, and the adjacent connection units 11 are adjacent to each other by the amount of the clearance.
  • the bus bar 40 is accommodated in the bus bar holding portion 12 of the insulation protector 10.
  • the bus bar 40 is pushed downward while being guided by the accommodation wall 13 of the bus bar holding portion 12, and when the first retaining piece 17 and the second retaining piece 18 abut, these retaining pieces 17 and 18 are directed downward. Progress downward while being elastically deformed.
  • the first retaining piece 17 and the second retaining piece 18 are pushed to a position beyond the first retaining piece 17, the first retaining piece 17 and the second retaining piece 18 elastically return, so that the retaining state is suppressed from above. It is held (see FIGS. 9 and 10).
  • the bus bar 40 housed in the bus bar holding portion 12 has both longitudinal end portions mounted on the pair of mounting portions 16 and supported from below, and a central portion in the longitudinal direction is fixed to the welding protection portion 20. It is supported from below. That is, in the back surface (lower surface) of the bus bar 40, the region between the mounting portion 16 and the welding protection portion 20 is exposed downward.
  • the detection terminal 50 is attached to the insulation protector 10. Specifically, the wire barrel 53 of the detection terminal 50 is crimped to the end of the exposed core of the electric wire 58, and the insulation barrel 54 is crimped to the insulation coating, and the terminal body 51 is held by each bus bar It accommodates from the upper part in the predetermined position of the part 12, and overlaps with the bus-bar 40 (refer FIG. 11-FIG. 12).
  • the detection terminal 50 is brought close to the bus bar 40 with a slight inclination so that the insertion portion 55 side is downward, and after the insertion portion 55 is inserted into the locking hole 41 of the bus bar 40 , The terminal body portion 51, the wire barrel 53, and the insulation barrel 54 are overlapped.
  • the welding protection portion 20 is disposed on the lower surface side of the locking hole 41 of the bus bar 40, but since the escape recess 23 is formed in the welding protection portion 20, the insertion portion 55 is the welding protection portion 20. Interference with is avoided.
  • the insertion portion 55 is locked to the hole edge portion 41A of the locking hole 41 from below.
  • the wire barrel 53 and the insulation barrel 54 are accommodated in the barrel holding groove 34. Then, the electric wire 58 derived from the insulation barrel 54 is disposed in the electric wire receiving groove 30.
  • detection terminal 50 is held at a predetermined position in bus bar holding portion 12.
  • detection terminal 50 may be welded to bus bar 40.
  • a welding method arbitrary welding methods can be suitably selected as needed, such as well-known laser welding, ultrasonic welding, resistance welding, arc welding and the like.
  • the wiring module 1 of the present embodiment assembled in this manner is attached to the top surface of the storage element group 60.
  • the locking piece 36 of the insulation protector 10 is inserted into the recess 67 of the storage element 61, and the locking projection 36A is locked to the hole edge of the hole 68.
  • the accommodation wall 13 surrounds the pair of electrode terminals 63 adjacent to each other. That is, the electrode terminals 63 are accommodated in the pair of electrode accommodating portions 28 of the bus bar holding portion 12. Further, the tip (upper surface) of the electrode terminal 63 abuts on the lower surface of the bus bar 40 exposed downward.
  • the laser irradiation device (not shown) disposed above the wiring module 1 (on the side opposite to the bus bar 40 of the detection terminals 50) irradiates a laser to weld the bus bar 40 and the electrode terminal 63 by laser welding. .
  • the detection terminal 50 and the bus bar 40 are not welded in the process of attaching the wiring module 1 to the storage element group 60, the terminal body 51 of the detection terminal 50 and the bus bar 40 are welded by laser welding at this stage. . Thus, the storage module M is completed (see FIG. 13).
  • the wiring module according to the present embodiment is a wiring module 1 attached to a storage element group 60 in which a plurality of storage elements 61 having a positive electrode 63A of a first metal and a negative electrode 63B of a second metal different from the first metal are arranged.
  • the bus bar 40 having the first metal portion 42 of the first metal and the second metal portion 43 of the second metal, the insulation protector 10 for holding the bus bar 40, and the detection terminal connected to the bus bar 40 50, and the bus bar 40 has an overlapping portion 44 in which a portion of the first metal portion 42 and a portion of the second metal portion 43 overlap, and the bus bar 40 has a position different from that of the welding portion 45 , And the terminal connection portion 46 in which the detection terminal 50 is overlapped.
  • the position of the terminal connection portion 46 is different from the welded portion 45 in which the first metal portion 42 and the second metal portion 43 are welded.
  • corrugation resulting from welding with the 1st metal part 42 and the 2nd metal part 43 is not formed in the surface of the terminal connection part 46.
  • the detection terminal 50 is superimposed on the flat terminal connection portion 46 as compared to the welding portion 45, so that the reliability of electrical connection between the detection terminal 50 and the bus bar 40 can be improved.
  • the overlapping portion 44 has the hole edge portion 41A of the locking hole 41 for holding the detection terminal 50 in the terminal connection portion 46, and the detection terminal 50 is inserted into the locking hole 41. It has the insertion part 55 locked to the hole edge 41A of the locking hole 41.
  • the detection terminal 50 can be held by the terminal connection portion 46 of the overlapping portion 44 by locking the hole edge portion 41A of the locking hole 41 and the insertion portion 55.
  • the region different from the overlapping portion 44 is relatively flat, so that the bus bar 40 can be suitably connected to the positive electrode 63A and the negative electrode 63B.
  • the terminal connection portion 46 is provided at a position different from the welding portion 45 in the overlapping portion 44. Therefore, the connection area between the bus bar 40 and the positive electrode 63A and the connection area between the bus bar 40 and the negative electrode 63B can be widely secured. Therefore, the electrical connection reliability between the bus bar 40 and the positive electrode 63A and the negative electrode 63B It is possible to improve the quality.
  • the overlapping portion 44 and the detection terminal 50 are welded at the terminal connection portion 46.
  • the manufacturing cost can be reduced.
  • the first metal portion 42 and the positive electrode 63A are welded, and the second metal portion 43 and the negative electrode 63B are welded.
  • the bus bar 40 and the positive electrode 63A, and the bus bar 40 and the negative electrode 63B can be connected by welding. Thereby, by screwing a bolt and a nut, the working efficiency can be improved as compared with the case where the bus bar 40 is connected to the positive electrode 63A and the negative electrode 63B.
  • the bus bar 80 As shown in FIG. 14, the bus bar 80 according to the present embodiment has a flat plate shape. In the vicinity of the center position in the left-right direction of the bus bar 80, an overlapping portion 81 in which the first metal portion 42 and the second metal portion 43 overlap is provided. The overlapping portion 81 is shown by hatching in FIG.
  • the overlapping portion 81 according to the present embodiment is formed into a flat shape by being press-processed or the like.
  • “The first metal portion 42 and the second metal portion 43 overlap with each other” in the overlapping portion 81 according to the present embodiment means that the first metal portion 42 and the second metal portion 43 are vertically stacked. And the first metal portion 42 and the second metal portion 43 are integrally metal-bonded, and the metal forming the first metal portion 42 and the metal forming the second metal portion 43 are alloyed to form a metal. It also includes the state in which the components overlap each other.
  • a rectangular locking hole 84 for locking the insertion portion 83 (an example of the locking receiving portion) of the detection terminal 82 penetrates the plate surface at a position slightly behind the center in the front-rear direction It is formed.
  • the insertion portion 83 is engaged with the hole edge portion 84A (an example of the engagement portion) of the engagement hole 84.
  • the detection terminal 82 of the present embodiment includes a long and narrow rectangular plate-like terminal main body 85, a wire barrel 53 provided adjacent to the terminal main body 85, and a wire barrel And an insulation barrel 54 provided side by side with 53.
  • the extension barrel 54 is extended in a crank shape so as to protrude in the opposite direction to the rising direction.
  • a crank-shaped connected portion 86 is extended so as to protrude in the opposite direction to the rising direction of the wire barrel 53 and the insulation barrel 54.
  • the projecting dimension of the connected portion 86 from the terminal main body portion 85 is set smaller than the projecting dimension of the insertion portion 83 from the terminal main body portion 85.
  • the connected portion 86 is a portion of the top surface of the bus bar 80 different from the overlapping portion 81. It comes in contact from above.
  • a portion of the bus bar 80 in contact with the connected portion 86 of the detection terminal 82 is a terminal connection portion 87.
  • the connected portion 86 of the detection terminal 82 and the terminal connection portion 87 of the bus bar 80 overlap vertically.
  • the connected portion 86 and the terminal connection portion 87 are connected by a known method such as welding or soldering.
  • the overlapping portion 81 Since the overlapping portion 81 according to the present embodiment is connected in a state where the first metal portion 42 and the second metal portion 43 are overlapped, the overlapping portion 81 is flat compared to the portion of the bus bar 80 different from the overlapping portion 81. It is gone.
  • the terminal connection portion 87 since the terminal connection portion 87 is provided at a position different from the overlapping portion 81, the detection terminal 82 is connected to the bus bar 80 at a relatively flat portion of the bus bar 80. It has become. As a result, the electrical connection reliability between the detection terminal 82 and the bus bar 80 can be further improved.
  • welds detection terminal 50 to bus bar 40 was shown in the above-mentioned embodiment, it is applicable also when welding other detection terminals, such as a current detection terminal and a temperature detection terminal.
  • the insulation protector 10 was provided with three connection unit 11A, 11B, 11B, the insulation protector 10 is a thing by which two or four or more connection units 11 were connected, It is also good. Further, three or more bus bar holding portions 12 may be provided in one connection unit 11. Alternatively, the insulation protector 10 may be composed of one member.
  • Wiring module 10 Insulation protector 40, 80: Bus bar 41A: Hole edge 42: First metal portion 43: Second metal portion 44, 81: Overlap portion 45: Weld portion 46, 87: Terminal connection portion 50, 82 : Detection terminal 55, 83: Insertion part 60: Storage element group 61: Storage element 63A: Positive electrode 63B: Negative electrode 86: Connected part M: Storage module

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne un module de câblage 1 qui est fixé à un groupe 60 d'éléments de stockage d'énergie dans lequel une pluralité d'éléments de stockage d'énergie 61 sont alignés, chacun des éléments de stockage d'énergie 61 comportant une électrode positive 63A comprenant un premier métal et une électrode négative 63B comprenant un second métal différent du premier métal. Le module de câblage 1 est pourvu : d'une barre omnibus 40 comportant une première portion métallique 42 comprenant le premier métal et une seconde portion métallique 43 comprenant le second métal ; d'un dispositif de protection isolant 10 pour stocker la barre omnibus 40 ; et d'une borne de détection 50 connectée à la barre omnibus 40. La barre omnibus 40 comporte une portion de chevauchement 44 dans laquelle une partie de la première portion métallique 42 et une partie de la seconde portion métallique 43 se chevauchent. La portion de chevauchement 44 comporte une partie soudée 45 dans laquelle la première portion métallique 42 et la seconde portion métallique 43 sont soudées l'une à l'autre. La barre omnibus 40 comporte une portion de connexion de borne 46 dans laquelle la borne de détection 50 est stratifiée, à un emplacement différent de la portion soudée 45.
PCT/JP2016/069974 2015-07-17 2016-07-06 Module de câblage et module de stockage d'énergie Ceased WO2017014049A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680039353.XA CN107710457B (zh) 2015-07-17 2016-07-06 布线模块以及蓄电模块
US15/744,283 US10305083B2 (en) 2015-07-17 2016-07-06 Wiring module and power storage module

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015143042 2015-07-17
JP2015-143042 2015-07-17
JP2015-256598 2015-12-28
JP2015256598A JP6590212B2 (ja) 2015-07-17 2015-12-28 配線モジュール、及び蓄電モジュール

Publications (1)

Publication Number Publication Date
WO2017014049A1 true WO2017014049A1 (fr) 2017-01-26

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PCT/JP2016/069974 Ceased WO2017014049A1 (fr) 2015-07-17 2016-07-06 Module de câblage et module de stockage d'énergie

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110651378A (zh) * 2017-06-02 2020-01-03 株式会社自动网络技术研究所 蓄电模块
CN112997352A (zh) * 2018-11-22 2021-06-18 株式会社自动网络技术研究所 连接模块
WO2024157567A1 (fr) * 2023-01-25 2024-08-02 アルプスアルパイン株式会社 Capteur de courant électrique

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JP2011082164A (ja) * 2009-10-05 2011-04-21 Sb Limotive Co Ltd 電池モジュール、及び二次電池の端子連結方法
WO2012133592A1 (fr) * 2011-03-29 2012-10-04 三洋電機株式会社 Dispositif d'alimentation en courant et véhicule équipé dudit dispositif d'alimentation en courant
JP2012199007A (ja) * 2011-03-18 2012-10-18 Auto Network Gijutsu Kenkyusho:Kk 電池モジュール
US20140272520A1 (en) * 2013-03-12 2014-09-18 Samsung Sdi Co., Ltd. Battery module

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2011082164A (ja) * 2009-10-05 2011-04-21 Sb Limotive Co Ltd 電池モジュール、及び二次電池の端子連結方法
JP2012199007A (ja) * 2011-03-18 2012-10-18 Auto Network Gijutsu Kenkyusho:Kk 電池モジュール
WO2012133592A1 (fr) * 2011-03-29 2012-10-04 三洋電機株式会社 Dispositif d'alimentation en courant et véhicule équipé dudit dispositif d'alimentation en courant
US20140272520A1 (en) * 2013-03-12 2014-09-18 Samsung Sdi Co., Ltd. Battery module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110651378A (zh) * 2017-06-02 2020-01-03 株式会社自动网络技术研究所 蓄电模块
CN110651378B (zh) * 2017-06-02 2022-04-26 株式会社自动网络技术研究所 蓄电模块
CN112997352A (zh) * 2018-11-22 2021-06-18 株式会社自动网络技术研究所 连接模块
CN112997352B (zh) * 2018-11-22 2023-12-29 株式会社自动网络技术研究所 连接模块
WO2024157567A1 (fr) * 2023-01-25 2024-08-02 アルプスアルパイン株式会社 Capteur de courant électrique

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