WO2014106890A1 - 組電池 - Google Patents
組電池 Download PDFInfo
- Publication number
- WO2014106890A1 WO2014106890A1 PCT/JP2013/050007 JP2013050007W WO2014106890A1 WO 2014106890 A1 WO2014106890 A1 WO 2014106890A1 JP 2013050007 W JP2013050007 W JP 2013050007W WO 2014106890 A1 WO2014106890 A1 WO 2014106890A1
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- WIPO (PCT)
- Prior art keywords
- bus bar
- unit cell
- terminal
- electrode terminal
- assembled battery
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- 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 an assembled battery in which a plurality of unit cells are electrically connected by a bus bar.
- each electrode terminal is formed in a stepped shape having a first step portion and a second step portion that is located on the first step portion and has a smaller diameter than the first step portion.
- the bus bar has a plate-like shape having an opening smaller than the diameter of the first step portion and having a diameter substantially equal to the diameter of the second step portion, and a notch formed in at least a part of the periphery of the opening.
- the terminal connection part is provided. The terminal connecting portion is joined onto the first step portion in a state where the second step portion of the electrode terminal is fitted in the opening.
- the bus bar is pressed to fit the second step portion of the electrode terminal into the opening of the terminal connection portion. At this time, the terminal connection portion is deformed in accordance with the second step portion.
- the assembled battery is an assembled battery formed by connecting a plurality of stacked unit cells with a bus bar, and the unit cell includes a first electrode terminal and a second electrode terminal.
- the bus bar has a first electrode connection portion connected to the first electrode terminal of one unit cell, and a second electrode connected to the second electrode terminal of another unit cell adjacent to the one unit cell.
- a connecting device that includes a bus bar, a first electrode terminal of one unit cell, and a second electrode terminal of another unit cell.
- a gap that absorbs relative displacement between the second electrode connection portion and the second electrode terminal is formed when the plurality of single cells are arranged in a stacking direction and / or a direction orthogonal to the stacking direction from the reference position.
- a gap forming part is provided, and the second electrode terminal and the second electrode connecting part are butt welded or lap welded It has been.
- the bus bar can be easily positioned, and the bus bar can be connected to the first electrode terminal and the second electrode terminal of the unit cell.
- the side surface schematic diagram seen from the Y direction one side of FIG. (A) is a plane schematic diagram which shows the electrode connection apparatus comprised by the bus-bar of FIG. 4, a negative electrode terminal, and a positive electrode terminal,
- (b) is the A section enlarged schematic diagram of (a).
- the plane schematic diagram which shows the butt welding area
- the plane schematic diagram which shows the state by which the 2nd cell was arrange
- the plane schematic diagram which shows the state by which the 2nd cell was arrange
- the perspective view which shows the electrode connection apparatus of the assembled battery which concerns on the modification of 1st Embodiment.
- FIG. 27 is a schematic plan view showing the electrode connection device of FIG. 26.
- the plane schematic diagram which shows the state by which the 2nd cell was arrange
- the plane schematic diagram which shows the electrode connection apparatus of the assembled battery which concerns on the modification of 5th Embodiment.
- FIG. 1 is a perspective view showing an appearance of the assembled battery 100 according to the first embodiment
- FIG. 2 is a perspective view showing a configuration of the assembled battery 100.
- the battery lid side on which the positive electrode terminal 104 and the negative electrode terminal 105 are provided is described as the upper side of the assembled battery 100
- the battery bottom side is described as the lower side of the assembled battery 100.
- the vertical direction of the assembled battery 100 is the Z direction
- the stacking direction of the plurality of single cells 101 constituting the assembled battery 100 that is, the longitudinal direction of the assembled battery 100 is the X direction
- the X direction and the Z direction The direction orthogonal to each of the above, that is, the width direction of the assembled battery 100 is described as the Y direction.
- the assembled battery 100 includes a plurality of single cells 101.
- the plurality of unit cells 101 are arranged in a stacked manner, and are configured to include a pair of end plates 120, a pair of side frames 121, and a plurality of cell holders 122 ⁇ / b> A and 122 ⁇ / b> B disposed between the unit cells 101. It is integrally assembled by the mechanism.
- a top plate 123 is disposed above the plurality of unit cells 101.
- Each cell 101 has a flat rectangular parallelepiped shape, and is arranged side by side so that wide side surfaces 109W (see FIG. 3) having a large area among the side surfaces face each other.
- Adjacent unit cells 101 are arranged with their directions reversed so that the positions of the positive electrode terminal 104 and the negative electrode terminal 105 (see FIG. 3) protruding from the battery cover 108 of the unit cell 101 are reversed.
- the positive electrode terminal 104 and the negative electrode terminal 105 of each adjacent unit cell 101 are electrically connected by a bus bar 110A which is a metal plate-like conductive member. That is, the plurality of single cells 101 constituting the assembled battery 100 according to the present embodiment are electrically connected in series.
- one of the single cells 101 arranged at both ends has a positive electrode terminal 104 with another assembled battery (not shown)
- a bus bar 110B for electrically connecting the assembled battery 100 is attached to the illustrated wiring for extracting power.
- the other unit cell 101 (the unit cell 101 at the right end in the figure) has a negative electrode terminal 105 connected to another battery pack (not shown) or a wiring for power extraction (not shown).
- a bus bar 110C for electrically connecting the assembled battery 100 is attached.
- an intermediate cell holder 122A is arranged between the single cells 101, and an end cell holder 122B is arranged between each of the single cells 101 and the end plate 120 arranged at both ends. Is done.
- the plurality of unit cells 101 arranged in a stacked manner are held by cell holders 122A and 122B, and are sandwiched by a pair of end plates 120 from both ends in the X direction.
- the end plate 120 has a rectangular flat plate shape corresponding to the wide side surface 109 ⁇ / b> W (see FIG. 3) of the unit cell 101.
- the material of the intermediate cell holder 122A and the end cell holder 122B is an insulating resin. Convex portions 122c projecting in the Y direction are provided on the side surfaces of the cell holders 122A and 122B.
- the plurality of single cells 101 and the cell holders 122 ⁇ / b> A and 122 ⁇ / b> B are secured by a pair of side frames 121 while being sandwiched by a pair of end plates 120.
- the pair of side frames 121 are arranged to face one side and the other side in the Y direction.
- Each of the pair of side frames 121 includes a pair of flanges 121f provided at both ends in the X direction and an opening 121c provided between the pair of flanges 121f.
- Each flange 121f is provided with a through hole 121h, and the end plate 120 is provided with a screw hole 120h.
- the opening part 121c of the side frame 121 is fitted to the convex part 122c of the cell holders 122A and 122B from the outside in the Y direction. Both ends of the opening 121c in the X direction are engaged with convex portions 120c projecting from the side of the end plate 120 in the Y direction.
- the flange 121f is in contact with the end plate 120.
- a fixing screw (fastening member) is inserted from the outer side of the end plate 120 in the X direction into the through hole 121h of the side frame 121, and the fixing screw is screwed into the screw hole 120h of the end plate 120. 120 is attached. As a result, the cell holders 122A and 122B sandwiched between the pair of end plates 120 are compressed by a predetermined amount, and the single cells 101 are held by the end plate 120 via the cell holders 122A and 122B.
- the cell holders 122A and 122B having insulation properties are interposed between the single cells 101 or between the end plate 120 and the single cells 101, insulation is ensured and the relative positions of the single cells 101 are also determined. Is defined.
- the top plate 123 is provided with an opening 123h into which the positive electrode terminal 104 and the negative electrode terminal 105 of the unit cell 101 are inserted at the attachment positions of the bus bars 110A, 110B, and 110C.
- the top plate 123 is provided on each bus bar 110 ⁇ / b> A, 110 ⁇ / b> B, 110 ⁇ / b> C so that the bus bars 110 ⁇ / b> A, 110 ⁇ / b> B, 110 ⁇ / b> C can be easily positioned with respect to the positive terminal 104 and the negative terminal 105.
- a guide plate 123a corresponding to the shape is provided in the vicinity of the opening 123h.
- FIG. 3 is a perspective view showing the unit cell 101.
- the unit cell 101 includes a rectangular battery container including a battery can 109 and a battery lid 108.
- the battery can 109 and the battery lid 108 are both made of aluminum.
- the battery can 109 has a rectangular box shape having an opening 109A at one end.
- the battery lid 108 has a rectangular flat plate shape and is laser-welded so as to close the opening 109 ⁇ / b> A of the battery can 109. That is, the battery lid 108 seals the battery can 109.
- the battery container has a hollow rectangular parallelepiped shape, the wide and wide side surfaces 109W face each other, the narrow and narrow side surfaces 109N face each other, and the battery lid 108 and the bottom surface 109B of the battery can 109 face each other. .
- a charging / discharging element (not shown) is stored in a state covered with an insulating case (not shown).
- a positive electrode of a charge / discharge element (not shown) is connected to the positive terminal 104, and a negative electrode of the charge / discharge element is connected to the negative terminal 105. For this reason, electric power is supplied to the external device via the positive electrode terminal 104 and the negative electrode terminal 105, or external generated power is supplied to the charge / discharge element via the positive electrode terminal 104 and the negative electrode terminal 105 to be charged.
- the battery lid 108 has a liquid injection hole for injecting an electrolyte into the battery container.
- the injection hole is sealed with an injection plug 108A after the electrolyte is injected.
- the electrolytic solution for example, a non-aqueous electrolytic solution in which a lithium salt such as lithium hexafluorophosphate (LiPF 6 ) is dissolved in a carbonate-based organic solvent such as ethylene carbonate can be used.
- the battery cover 108 is provided with a gas discharge valve 108B.
- the gas discharge valve 108B is formed by partially thinning the battery lid 108 by press working.
- the thin-walled member may be attached to the opening of the battery lid 108 by laser welding or the like, and the thin portion may be used as a gas discharge valve.
- the gas discharge valve 108B is cleaved when the unit cell 101 generates heat due to an abnormality such as overcharge and gas is generated and the pressure in the battery container rises to reach a predetermined pressure, and discharges the gas from the inside. This reduces the pressure in the battery container.
- FIG. 4 shows the negative terminal 105 of one unit cell (hereinafter referred to as the first unit cell 101A) of the plurality of unit cells 101 and another unit cell (hereinafter referred to as the second unit cell) adjacent to the first unit cell 101A.
- FIG. 5 is a perspective view showing a positive electrode terminal 104 and a bus bar 110 ⁇ / b> A of battery 101 ⁇ / b> B), and FIG. 5 is a schematic side view seen from one side in the Y direction of FIG. 4.
- FIG. 5 shows a cross section taken along line VV of FIG. 4 for the bus bar 110A.
- the negative electrode terminal 105 is made of copper or a copper alloy and includes a substantially rectangular parallelepiped negative electrode base portion 151 and a columnar shaft portion 152 protruding upward from the upper surface of the negative electrode base portion 151.
- the upper surface of the negative electrode base portion 151 is a flat surface with which the bus bar 110A is in contact.
- the positive electrode terminal 104 is made of aluminum or an aluminum alloy, and includes a positive electrode base portion 141 having a substantially rectangular parallelepiped shape and a protruding portion 142 protruding upward from the upper surface of the positive electrode base portion 141.
- the upper surface of the positive electrode base portion 141 is a flat surface with which the bus bar 110A comes into contact.
- the protrusion 142 has a substantially rectangular column shape with rounded four corners, and is provided so that the longitudinal direction is parallel to the X direction.
- the bus bar 110A has a substantially L shape in plan view (see FIG. 6A). As shown in FIG. 4, the bus bar 110A includes a substantially rectangular plate-shaped negative electrode connecting portion 111 that is in contact with the upper surface of the negative electrode base portion 151 of the first unit cell 101A, and a positive electrode base unit 141 of the second unit cell 101B. A substantially square plate-like positive electrode connecting portion 116 that is in contact with the upper surface of the first electrode, and a connecting portion 115 that connects the negative electrode connecting portion 111 and the positive electrode connecting portion 116. As shown in FIGS. 4 and 5, the connecting portion 115 has an inverted U shape when viewed from one side in the Y direction, and is elastically deformable in the X direction. One end of the connecting portion 115 in the X direction is coupled to the long side of the negative electrode connecting portion 111, and the other end in the X direction is coupled to one side of the positive electrode connecting portion 116.
- the negative electrode connection portion 111 is provided with a voltage detection connection terminal 113 to which a voltage detection line (not shown) for detecting the voltage of the unit cell 101 is connected.
- the negative electrode connecting portion 111 is provided with a circular fitting hole 112 that is fitted to the shaft portion 152 of the negative electrode terminal 105.
- the positive electrode connection portion 116 is provided with an opening 117 that is fitted to the protrusion 142 of the positive electrode terminal 104.
- the thickness tn of the negative electrode connecting portion 111 is set to be approximately equal to the height hn of the shaft portion 152 of the negative electrode terminal 105 (tn ⁇ hn).
- the thickness tp of the positive electrode connecting portion 116 is set to be approximately equal to the height hp of the protrusion 142 of the positive electrode terminal 104 (tp ⁇ hp).
- the end portion on the lower surface side of the fitting hole 112 of the negative electrode connecting portion 111 is chamfered to form a tapered portion 112t.
- the lower end of the opening 117 of the positive electrode connection portion 116 is chamfered to form a tapered portion 117t.
- the upper end portion of the shaft portion 152 of the negative electrode terminal 105 is chamfered to form a tapered portion 152t.
- the upper end portion of the protrusion 142 of the positive electrode terminal 104 is chamfered to form a tapered portion 142t. For this reason, the insertability of the shaft part 152 and the protrusion part 142 with respect to the fitting hole 112 and the opening part 117 of the bus bar 110A is improved. Note that R chamfering may be performed instead of C chamfering.
- FIG. 6A is a schematic plan view showing an electrode connecting device constituted by the bus bar 110A, the negative terminal 105 of the first unit cell 101A, and the positive terminal 104 of the second unit cell 101B, and FIG. It is the A section expansion schematic diagram of Fig.6 (a).
- FIG. 6 shows a state where each of the first unit cell 101A and the second unit cell 101B constituting the assembled battery 100 is disposed at an appropriate position (hereinafter referred to as a reference position).
- the curvatures of a first inner circumferential curved surface 117a and a second inner circumferential curved surface 117b of an opening 117 which will be described later, are greatly exaggerated for convenience.
- the fitting hole 112 of the negative electrode connecting portion 111 and the shaft portion 152 of the negative electrode terminal 105 of the first unit cell 101A rotate within a predetermined rotation range at the time of positioning. Fits freely.
- the diameter of the fitting hole 112 is slightly larger than the diameter of the shaft portion 152. For this reason, a slight gap is formed between the shaft portion 152 and the fitting hole 112.
- the protrusion 142 of the positive electrode terminal 104 of the second unit cell 101B is fitted in the opening 117 of the positive electrode connection portion 116.
- the shape of the protrusion 142 that is the terminal side fitting portion is different from the shape of the opening 117 that is the bus bar side fitting portion, and the gap S1 is formed between the protrusion 142 and the opening 117. Both are fitted.
- the protrusion 142 has a first outer peripheral plane 142a and a second outer peripheral plane 142b that are parallel to each other.
- the protrusion 142 has a third outer peripheral plane 142c and a fourth outer peripheral plane 142d that are parallel to each other.
- the first outer peripheral plane 142a and the second outer peripheral plane 142b are provided so as to be parallel to the X direction, and the third outer peripheral plane 142c and the fourth outer peripheral plane 142d are provided so as to be parallel to the Y direction.
- One end of the first outer peripheral plane 142a and the third outer peripheral plane 142c, the other end of the first outer peripheral plane 142a and the fourth outer peripheral plane 142d, one end of the second outer peripheral plane 142b, the third outer peripheral plane 142c, and The other end of the second outer peripheral plane 142b and the fourth outer peripheral plane 142d are connected by a curved surface 142r.
- the opening 117 includes a first inner curved surface 117a facing the first outer circumferential plane 142a, a second inner circumferential curved surface 117b facing the second outer circumferential plane 142b, and a third inner surface facing the third outer circumferential plane 142c. It has a circumferential plane 117c and a fourth inner circumferential plane 117d that faces the fourth outer circumferential plane 142d.
- the third inner circumferential plane 117c, the other end of the second inner circumferential curved surface 117b, and the fourth inner circumferential plane 117d are connected by a curved surface 117r, respectively.
- the dimension of the opening 117 in the X direction that is, the distance between the third inner peripheral plane 117c and the fourth inner peripheral plane 117d is the dimension of the protrusion 142 in the X direction, that is, the distance between the third outer peripheral plane 142c and the fourth outer peripheral plane 142d. Is set longer than.
- the first inner circumferential curved surface 117a has an arc shape in plan view, and swells toward the first outer circumferential plane 142a at the center of the opening 117 in the X direction. That is, in the first inner circumferential curved surface 117a, the center side of the first inner circumferential curved surface 117a swells toward the first outer circumferential plane 142a as compared to both ends of the first inner circumferential curved surface 117a.
- the second inner circumferential curved surface 117b has an arc shape in plan view and swells toward the second outer circumferential plane 142b at the center of the opening 117 in the X direction. That is, in the second inner peripheral curved surface 117b, the center side of the second inner peripheral curved surface 117b swells toward the second outer peripheral flat surface 142b as compared with both ends of the second inner peripheral curved surface 117b.
- the shape of the opening 117 is line-symmetric with respect to the X-direction center line CLx of the opening 117 and line-symmetric with respect to the Y-direction center line CLy of the opening 117.
- the opening 117 has a first inner circumferential curved surface from the X-direction center line CLx of the opening 117 toward the third inner circumferential plane 117c and the fourth inner circumferential plane 117d. The distance in the Y direction between 117a and the second inner circumferential curved surface 117b is formed to gradually increase.
- the distance in the Y direction between the first inner circumferential curved surface 117a and the second inner circumferential curved surface 117b is the shortest on the X-direction center line CLx of the opening 117, and the dimension thereof is the Y direction dimension of the protrusion 142, that is, the first dimension. It is set slightly longer than the distance between the outer peripheral plane 142a and the second outer peripheral plane 142b.
- a slight gap is formed between the first outer peripheral surface 142a of the protrusion 142 and the first inner peripheral curved surface 117a of the opening 117.
- the dimension G1 of the gap is the minimum value G1min on the X-direction center line CLx of the opening 117, and extends from the X-direction center line CLx of the opening 117 toward the third inner peripheral plane 117c and the fourth inner peripheral plane 117d. The farther away, the bigger it is.
- a slight gap is formed between the second outer peripheral plane 142b of the protrusion 142 and the second inner peripheral curved surface 117b of the opening 117.
- the dimension G2 of the gap is the minimum value G2min on the X-direction center line CLx of the opening 117. From the X-direction center line CLx of the opening 117, each of the third inner peripheral plane 117c and the fourth inner peripheral plane 117d The farther away, the bigger it is.
- the minimum values G1min and G2min of the gap dimensions G1 and G2 are set to be equal to or less than the maximum dimension that can be butt welded (hereinafter referred to as a weldable dimension Gw) in order to suppress the occurrence of welding defects.
- the weldable dimension Gw is, for example, about 10% of the penetration depth.
- the thickness of the bus bar 110A is set to about 0.8 mm, and the penetration depth is set to about 0.8 mm, so that the weldable dimension Gw is about 0.08 mm. Therefore, a region where the gap dimensions G1 and G2 are about 0 to 0.08 mm can be set as the butt welding region Ap11 (see FIG. 7).
- the minimum values G1min and G2min of the gap dimensions G1 and G2 are about 0.04 mm, respectively.
- the plate thickness and penetration depth of the bus bar 110A are not limited to the above, and the weldable dimension Gw is set in consideration of the plate thickness and penetration depth of the bus bar 110A.
- FIG. 7 is a schematic plan view showing a butt welding region Ap11 between the bus bar 110A and the positive electrode terminal 104 and a butt welding region An1 between the bus bar 110A and the negative electrode terminal 105.
- the butt welding regions Ap11 and An1 are schematically illustrated by hatching with hatching.
- the butt welding region Ap11 on the positive electrode side is a region extending from the X-direction center line CLx of the opening 117 to a portion separated by a predetermined length.
- the butt welding region Ap11 has a gap dimension G1 between the first inner circumferential curved surface 117a and the first outer circumferential plane 142a, and a gap dimension G2 between the second inner circumferential curved surface 117b and the second outer circumferential plane 142b, respectively. This is an area that is less than or equal to the weldable dimension Gw.
- the butt welding region An1 on the negative electrode side is set over the entire circumference of the shaft portion 152.
- the dimension of the gap between the outer peripheral surface of the shaft portion 152 of the negative electrode terminal 105 and the inner peripheral surface of the fitting hole 112 of the negative electrode connecting portion 111 is, for example, about 0.04 mm.
- the bus bar 110A is attached to the positive terminal 104 and the negative terminal 105, and the bus bar 110A and the positive terminal 104, and The bus bar 110A and the negative electrode terminal 105 can be butt welded.
- the gap S1 is defined by the inner peripheral surface of the opening 117 and the outer peripheral surface of the protrusion 142, as indicated by hatched hatching.
- the gap S1 absorbs the relative displacement between the positive electrode connection portion 116 and the positive electrode terminal 104 when the unit cell 101 is displaced.
- FIG. 8 is a schematic plan view showing a state in which the second unit cell 101B is displaced in the stacking direction (X direction) with respect to the first unit cell 101A.
- FIG. 9A is a schematic plan view showing a state in which the second unit cell 101B is displaced in the width direction (Y direction) with respect to the first unit cell 101A, and
- FIG. It is an expansion schematic diagram of a fitting part.
- the X-direction dimension of the opening 117 (longitudinal dimension of the opening 117) is longer than the X-direction dimension of the protrusion 142 (longitudinal dimension of the protrusion 142).
- a gap S ⁇ b> 1 is defined by the inner peripheral surface of 117 and the outer peripheral surface of the protrusion 142.
- the butt welding region Ap12 in which the gap dimension G1 and the gap dimension G2 are equal to or smaller than the weldable dimension Gw is ensured. Can do. Therefore, butt welding can be performed while suppressing the occurrence of welding defects in the butt welding region Ap12.
- the gap S1 Even if the second unit cell 101B is displaced from the reference position to the other side (left side in the drawing) of the stacking direction (X direction) with respect to the first unit cell 101A, the gap S1 Thus, the relative displacement between the positive electrode connecting portion 116 and the positive electrode terminal 104 is absorbed, and the bus bar 110 ⁇ / b> A can be disposed at a position where it can be butt welded to the positive electrode terminal 104.
- the bus bar 110A when the second unit cell 101B is shifted from the reference position to one side (the upper side in the figure) in the width direction (Y direction) with respect to the first unit cell 101A, the bus bar 110A. Is mounted in a state of being rotated by a predetermined angle with respect to the reference position with the shaft portion 152 of the negative electrode terminal 105 as the rotation center.
- the position where the dimension G1 of the gap between the first inner circumferential curved surface 117a and the first outer circumferential plane 142a is the minimum value G1min ′ is from the X-direction center line CLx ′ of the protrusion 142. It will shift to the fourth outer peripheral plane 142d side.
- the tangent plane L11 and the second inner surface of the first inner peripheral curved surface 117a parallel to the first outer peripheral plane 142a and the second outer peripheral plane 142b, respectively.
- the distance Ly1 between the circumferential curved surface 117b and the tangential plane L12 is longer than the interval Wy1 between the first outer circumferential plane 142a and the second outer circumferential plane 142b of the protrusion 142. For this reason, the opening 117 and the protrusion 142 can be fitted even when the bus bar 110A is inclined.
- the gap size G1 and the gap size G2 Since the butt welding region Ap13 is formed, each of which is equal to or smaller than the weldable dimension Gw, butt welding can be performed while suppressing the occurrence of welding defects.
- An angle range in which the bus bar 110A can be attached to the positive electrode terminal 104 and the negative electrode terminal 105 with the bus bar 110A tilted is the first inner circumferential curved surface 117a and It is determined by the respective curvatures of the second inner circumferential curved surface 117b and the longitudinal dimension of the opening 117. Increasing the respective curvatures of the first inner peripheral curved surface 117a and the second inner peripheral curved surface 117b and increasing the longitudinal dimension of the opening 117 can widen the range of inclination angles to which the bus bar 110A can be attached. it can.
- the larger the curvature the larger the allowable displacement amount, but the smaller the butt welding region.
- the smaller the curvature the larger the butt welding region can be, but the permissible misregistration amount becomes smaller.
- the electrical resistance can be reduced as the butt welding area increases. For this reason, in consideration of the positional deviation amount of the unit cell 101 assumed when assembling the assembled battery 100 and the size of the butt welding region, the first inner curved surface 117a and the second inner curved surface 117b Each curvature is set.
- the relative displacement between the positive electrode connecting portion 116 and the positive electrode terminal 104 is absorbed by S1, and the bus bar 110A can be disposed at a position where it can be butt welded to the positive electrode terminal 104.
- the second unit cell 101B is displaced from the reference position by a predetermined distance in the X direction with respect to the first unit cell 101A and is displaced by a predetermined distance in the Y direction.
- the fitting hole 112 of the bus bar 110A is fitted to the shaft portion 152 of the negative electrode terminal 105, and the opening 117 of the bus bar 110A is fitted to the protruding portion 142 of the positive electrode terminal 104 so that the butt welding can be performed. Is made.
- the electrode connecting device including the bus bar 110A, the negative terminal 105 of the first unit cell 101A, and the positive terminal 104 of the second unit cell 101B has a protrusion 142 that is a terminal side fitting unit and a bus bar side fitting.
- a gap forming portion including an opening 117 which is a portion is provided.
- the fitting hole 112 of the bus bar 110A is fitted to the shaft portion 152 of the negative electrode terminal 105. Then, the bus bar 110A can be positioned at a position where butt welding is possible only by fitting the opening 117 of the bus bar 110A to the protrusion 142 of the positive terminal 104.
- the inner peripheral curved surfaces 117a and 117b of the opening 117 of the bus bar 110A and the protrusion 142 of the positive terminal 104 are suppressed while suppressing the occurrence of welding defects.
- the outer peripheral surfaces 142a and 142b can be butt welded.
- the cylindrical shaft portion 152 and the circular fitting hole 112 are fitted, butt welded over the entire circumference of the shaft portion 152, and the negative electrode connecting portion 111 is used for voltage detection.
- a connection terminal 113 is provided. By performing butt welding over the entire circumference of the shaft portion 152, the welding area can be increased on the negative electrode side compared to the positive electrode side, and the connection resistance can be reduced.
- the negative electrode terminal 105 is made of copper or a copper alloy, which is a material having a lower electrical resistance than the positive electrode terminal 104 made of aluminum or an aluminum alloy.
- the voltage detection connection terminal 113 in the negative electrode connection portion 111 the voltage of each unit cell 101 ⁇ / b> A is more stable than in the case where the voltage detection connection terminal is provided in the positive electrode connection portion 116. It can be detected with high accuracy.
- the electrode connection apparatus of the assembled battery which concerns on the modification of 1st Embodiment is demonstrated.
- the same reference numerals are assigned to the same or corresponding parts as those in the first embodiment, and the differences will be mainly described.
- the example in which the outer peripheral surface of the shaft portion 152 of the negative electrode terminal 105 and the inner peripheral surface of the fitting hole 112 of the negative electrode connecting portion 111 of the bus bar 110A are butt welded has been described.
- the negative electrode connecting portion 111 and the negative electrode terminal 105 of the bus bar 110A are fastened by screws 190 instead of butt welding.
- the shaft portion 152 of the negative electrode terminal 105 is provided with a female screw portion 191 to which the screw 190 is screwed.
- the bus bar 110A is positioned and then screwed.
- the negative electrode connecting portion 111 and the negative electrode terminal 105 are fastened by screwing 190 into the female screw portion 191.
- the positive electrode connecting portion 116 and the positive electrode terminal 104 are butt welded in the same manner as in the first embodiment.
- the bus bar 110A can be easily positioned even when the unit cell 101 is misaligned.
- the bus bar 110 ⁇ / b> A can be connected to the negative terminal 105 and the positive terminal 104. Since the manufacturability is improved, the cost can be reduced.
- FIG. 11 is a schematic plan view showing an electrode connection apparatus for an assembled battery according to the second embodiment.
- FIG. 11 is a view similar to FIG. 7.
- 201B) shows a state of being arranged at the reference position.
- each curvature of the 1st outer periphery curved surface 242a and the 2nd outer periphery curved surface 242b of the projection part 242 mentioned later is exaggerated and enlarged greatly for convenience.
- a pair of flat surfaces 142a and 142b parallel to the X direction is provided on the protrusion 142 which is a terminal-side fitting portion of the positive electrode terminal 104, and a pair of faces facing the pair of flat surfaces 142a and 142b, respectively.
- the curved surfaces 117a and 117b are provided in the opening 117 which is the bus bar side fitting portion of the bus bar 110A.
- a pair of planes 217a and 217b parallel to the X direction are provided in the opening 217 that is the bus bar side fitting portion of the bus bar 210, and each of the pair of planes 217a and 217b is provided.
- Curved surfaces 242a and 242b that are opposite to each other are provided on a protrusion 242 that is a terminal-side fitting portion of the positive electrode terminal 204.
- the positive electrode connection portion 216 of the bus bar 210 is provided with a rectangular opening 217.
- the opening 217 is provided so that the pair of planes 217a and 217b are parallel to the X direction when the bus bar 210 is attached at the reference position.
- the first outer peripheral curved surface 242a of the protrusion 242 is provided to face the first inner peripheral plane 217a of the opening 217, and the second outer peripheral curved surface 242b of the protrusion 242 is the second inner peripheral surface of the opening 217. It is provided to face the flat surface 217b.
- the first outer peripheral curved surface 242a swells toward the first inner peripheral plane 217a at the center in the X direction of the protrusion 242. That is, in the first outer peripheral curved surface 242a, the center side of the second outer peripheral curved surface 242b swells toward the first inner peripheral flat surface 217a as compared with both ends of the first outer peripheral curved surface 242a.
- the second outer peripheral curved surface 242b swells toward the second inner peripheral flat surface 217b at the center of the protrusion 242 in the X direction. That is, in the second outer peripheral curved surface 242b, the center side of the second outer peripheral curved surface 242b swells toward the second inner peripheral flat surface 217b as compared with both ends of the second outer peripheral curved surface 242b.
- the first outer peripheral curved surface 242a and the second outer peripheral curved surface 242b of the protrusion 242 are connected to each other at both ends by a plane parallel to the Y direction.
- the X direction dimension of the protrusion 242 is set shorter than the X direction dimension of the opening 217.
- the dimension G1 of the gap between the first inner peripheral plane 217a and the first outer curved surface 242a is a minimum value on the X-direction center line CLx ′ of the protrusion 242.
- the gap dimension G1 increases as the distance from the center line CLx ′ in the X direction increases.
- the dimension G2 of the gap between the second inner peripheral plane 217b and the second outer peripheral curved surface 242b is a minimum value on the X-direction center line CLx ′ of the protrusion 242.
- the gap dimension G2 increases as the distance from the center line CLx ′ in the X direction increases.
- the butt welding region Ap21 is set as a region where the gap dimension G1 and the gap dimension G2 are each equal to or less than the weldable dimension Gw.
- the gap S2 is defined by the inner peripheral surface of the opening 217 and the outer peripheral surface of the protrusion 242. Therefore, when the second unit cell 201B is displaced in the X direction with respect to the first unit cell 201A, and the second unit cell 201B is displaced in the Y direction with respect to the first unit cell 201A. In this case, the relative displacement between the positive electrode connecting portion 216 and the positive electrode terminal 204 is absorbed, and butt welding is enabled.
- FIG. 12 is a schematic plan view showing a state in which the second unit cell 201B is displaced in the stacking direction (X direction) with respect to the first unit cell 201A, and FIG. It is a plane schematic diagram which shows the state by which 2 cell 201B was shifted
- the dimension in the X direction of the opening 217 is longer than the dimension in the X direction of the protrusion 242, and a gap S ⁇ b> 2 is defined by the inner peripheral surface of the opening 217 and the outer peripheral surface of the protrusion 242. For this reason, as shown in FIG. 12, when the second unit cell 201B is shifted from the reference position to one side (the right side in the figure) in the stacking direction (X direction) with respect to the first unit cell 201A, The bus bar 210 is mounted in a state where the portion 242 is positioned on one end side in the X direction of the opening 217.
- the butt welding region where the gap dimension G1 and the gap dimension G2 are equal to or less than the weldable dimension Gw. Ap22 can be secured. Therefore, butt welding can be performed while suppressing the occurrence of welding defects in the butt welding region Ap22.
- the gap S2 Even if the second unit cell 201B is arranged to be shifted from the reference position to the other side (left side in the drawing) of the stacking direction (Y direction) with respect to the first unit cell 201A, the gap S2 Thus, the relative displacement between the positive electrode connecting portion 216 and the positive electrode terminal 204 is absorbed, and the bus bar 210 can be disposed at a position where it can be butt welded to the positive electrode terminal 204.
- the bus bar 210 has the negative electrode terminal 105 with respect to the reference position. It is mounted in a state where it is rotated by a predetermined angle with the shaft portion 152 as the rotation center.
- the position where the dimension G1 of the gap between the first inner peripheral plane 217a and the first outer peripheral curved surface 242a becomes the minimum value G1min ′ is shifted from the X-direction center line CLx ′ of the protrusion 242 to one end side in the X direction (right side in the drawing). It will be.
- the position where the dimension G2 of the gap between the second inner peripheral plane 217b and the second outer peripheral curved surface 242b becomes the minimum value G2min ′ is from the X-direction center line CLx ′ of the protrusion 242 to the other end side in the X direction (the left side in the drawing). It will shift.
- each of the gap size G1 and the gap size G2 is less than the weldable size Gw. Since the butt welding region Ap23 is formed, butt welding can be performed while suppressing the occurrence of welding defects.
- an allowable displacement amount can be increased, and by decreasing the curvature, the butt welding region can be increased.
- the relative displacement between the positive electrode connecting portion 216 and the positive electrode terminal 204 is absorbed by S2, and the bus bar 210 can be disposed at a position where it can be butt welded to the positive electrode terminal 204.
- the second unit cell 201B is displaced from the reference position by a predetermined distance in the X direction with respect to the first unit cell 201A and is displaced by a predetermined distance in the Y direction.
- the fitting hole 112 of the bus bar 210 is fitted to the shaft portion 152 of the negative electrode terminal 105, and the opening 217 of the bus bar 210 is fitted to the protruding portion 242 of the positive electrode terminal 204 so that the butt welding can be performed. Is made.
- the bus bar 210 can be easily positioned even when the position of the unit cell 201 is shifted, and the bus bar 210 Can be connected to the negative terminal 105 and the positive terminal 204. Since the manufacturability is improved, the cost can be reduced.
- the electrode connection apparatus of the assembled battery which concerns on the modification of 2nd Embodiment is demonstrated.
- the same or corresponding parts as those in the second embodiment are denoted by the same reference numerals, and the differences will be mainly described.
- the example in which the outer peripheral surface of the shaft portion 152 of the negative electrode terminal 105 and the inner peripheral surface of the fitting hole 112 of the negative electrode connecting portion 111 of the bus bar 210 are butt welded has been described.
- the negative electrode connecting portion 111 of the bus bar 210 and the negative electrode terminal 105 are fastened by screws 190 instead of butt welding.
- the shaft portion 152 of the negative electrode terminal 105 is provided with a female screw portion 191 into which a screw 190 is screwed.
- the bus bar 210 is positioned and then screwed.
- the negative electrode connecting portion 111 and the negative electrode terminal 105 are fastened by screwing 190 into the female screw portion 191.
- the positive electrode connection portion 216 and the positive electrode terminal 204 are butt welded in the same manner as in the second embodiment.
- the bus bar 210 can be easily positioned even when the unit cell 201 is misaligned.
- the bus bar 210 can be connected to the negative terminal 105 and the positive terminal 204.
- FIG. 15 is a schematic plan view showing an electrode connection apparatus for an assembled battery according to the third embodiment.
- FIG. 15 is a view similar to FIG. 11, and in FIG. 15, one unit cell (first unit cell 301 ⁇ / b> A) constituting the assembled battery and another unit cell (second unit cell) adjacent to the first unit cell 301 ⁇ / b> A. 301B) shows a state of being arranged at the reference position.
- the protrusion 342 has a cylindrical shape, and the opening 317 has a racing track shape in plan view. As described above, in the third embodiment, the shape of the protrusion 342 and the shape of the opening 317 are different from those of the second embodiment.
- a pair of planes 317a and 317b parallel to the X direction are provided in the opening 317 that is a bus bar side fitting portion of the bus bar 310.
- the protrusion 342 that is a terminal-side fitting portion of the positive electrode terminal 304 has a circular curved surface in plan view.
- the protruding portion 342 includes a pair of curved surfaces 342a and 342b that are bisected by the Y-direction central axis CLy ′ of the protruding portion 342.
- the pair of curved surfaces 342a and 342b are opposed to the pair of flat surfaces 317a and 317b, respectively.
- the butt welding region Ap31 is set as a region where the dimension G1 of the gap between the plane 317a and the curved surface 342a and the dimension G2 of the gap between the plane 317b and the curved surface 342b are equal to or less than the weldable dimension Gw.
- FIG. 16 is a schematic plan view showing a state in which the second unit cell 301B is shifted from the first unit cell 301A in the stacking direction (X direction).
- FIG. 17A is a schematic plan view showing a state in which the second unit cell 301B is displaced in the width direction (Y direction) with respect to the first unit cell 301A, and
- FIG. It is an expansion schematic diagram of a fitting part.
- the dimension in the X direction of the opening 317 is longer than the dimension in the X direction of the protrusion 342, and a gap S3 is defined by the inner peripheral surface of the opening 317 and the outer peripheral surface of the protrusion 342 (see FIG. 15). For this reason, as shown in FIG. 16, when the second unit cell 301B is shifted from the reference position to one side (the right side in the figure) in the stacking direction (X direction) with respect to the first unit cell 301A, The bus bar 310 is mounted in a state where the portion 342 is located on one end side in the X direction of the opening 317.
- the butt welding region where the gap dimension G1 and the gap dimension G2 are equal to or less than the weldable dimension Gw. Ap32 can be secured. Therefore, butt welding can be performed while suppressing the occurrence of welding defects in the butt welding region Ap32.
- the gap S3 Even if the second unit cell 301B is arranged to be shifted from the reference position to the other side (left side in the drawing) of the stacking direction (X direction) with respect to the first unit cell 301A, the gap S3 Thus, the relative displacement between the positive electrode connecting portion 316 and the positive electrode terminal 304 is absorbed, and the bus bar 310 can be disposed at a position where the bus bar 310 can be butt welded to the positive electrode terminal 304.
- the bus bar 310 is disposed. Is mounted in a state of being rotated by a predetermined angle with respect to the reference position with the shaft portion 152 of the negative electrode terminal 105 as the rotation center.
- the position where the dimension G1 of the gap between the flat surface 317a and the curved surface 342a becomes the minimum value G1min ′ is one end side in the X direction from the X-direction center line CLx ′ of the protrusion 342 (right side in the figure). ).
- each of the gap size G1 and the gap size G2 is less than the weldable size Gw. Since the butt welding region Ap33 is formed, butt welding can be performed while suppressing the occurrence of welding defects.
- the curvatures of the curved surfaces 342a and 342b facing the flat surfaces 317a and 317b are larger than those in the second embodiment, an allowable positional deviation amount can be increased.
- the gap between the first unit cell 301A and the second unit cell 301B is shifted from the reference position to the other side (the lower side in the drawing) in the width direction (Y direction).
- the relative displacement between the positive electrode connecting portion 316 and the positive electrode terminal 304 is absorbed by S3, and the bus bar 310 can be disposed at a position where it can be butt welded to the positive electrode terminal 304.
- the second unit cell 301B is displaced from the reference position by a predetermined distance in the X direction with respect to the first unit cell 301A and is displaced by a predetermined distance in the Y direction.
- the fitting hole 112 of the bus bar 310 is fitted to the shaft portion 152 of the negative electrode terminal 105, and the opening 317 of the bus bar 310 is fitted to the protruding portion 342 of the positive electrode terminal 304 so that the butt welding can be performed. Is made.
- the bus bar 310 can be easily positioned even when the unit cell 301 is misaligned. Can be connected to the negative terminal 105 and the positive terminal 304. Since the manufacturability is improved, the cost can be reduced.
- the shaft portion 152 of the negative electrode terminal 105 is provided with a female screw portion 191 into which a screw 190 is screwed.
- the bus bar 310 is positioned and then screwed.
- the negative electrode connecting portion 111 and the negative electrode terminal 105 are fastened by screwing 190 into the female screw portion 191.
- the positive electrode connection portion 316 and the positive electrode terminal 304 are butt welded in the same manner as in the third embodiment.
- the bus bar 310 is easily positioned even when the position of the unit cell 301 is shifted.
- the bus bar 310 can be connected to the negative electrode terminal 105 and the positive electrode terminal 304.
- FIG. 19 is a schematic plan view showing an electrode connection apparatus for an assembled battery according to the fourth embodiment.
- FIG. 19 is a view similar to FIG. 15, and in FIG. 19, one unit cell (first unit cell 401A) constituting the assembled battery and another unit cell (second unit cell) adjacent to the first unit cell 401A. 401B) shows a state of being arranged at the reference position.
- the pair of planes 317a and 317b of the opening 317 are provided so as to be parallel to the X direction (see FIG. 15).
- the pair of planes 417a and 417b of the opening 417 are provided so as to be parallel to the Y direction.
- the protruding portion 442 has a cylindrical shape and includes a pair of curved surfaces 442a and 442b that are bisected by the X-direction center line CLx ′ of the protruding portion 442. The pair of curved surfaces 442a and 442b are opposed to the pair of flat surfaces 417a and 417b, respectively.
- the butt welding region Ap41 is set as a region where the dimension G1 of the gap between the plane 417a and the curved surface 442a and the dimension G2 of the gap between the plane 417b and the curved surface 442b are equal to or less than the weldable dimension Gw.
- FIG. 20 is a schematic plan view showing a state in which the second unit cell 401B is displaced in the width direction (Y direction) with respect to the first unit cell 401A.
- the dimension in the Y direction of the opening 417 is longer than the dimension in the Y direction of the protrusion 442, and a gap S4 is defined by the inner peripheral surface of the opening 417 and the outer peripheral surface of the protrusion 442 (see FIG. 19).
- a protrusion is formed.
- the bus bar 410 is mounted in a state where the portion 442 is positioned on one end side in the Y direction of the opening 417.
- the butt welding region where the gap dimension G1 and the gap dimension G2 are equal to or less than the weldable dimension Gw. Ap42 can be secured. Therefore, butt welding can be performed in the butt welding region Ap42 while suppressing generation of welding defects.
- the gap The relative displacement between the positive electrode connecting portion 416 and the positive electrode terminal 404 is absorbed by S4, and the bus bar 410 can be disposed at a position where it can be butt welded to the positive electrode terminal 404.
- the bus bar 410 can be easily positioned even when the second unit cell 401B is displaced from the reference position in the Y direction with respect to the first unit cell 401A.
- the bus bar 410 can be connected to the negative terminal 105 and the positive terminal 404. Since the manufacturability is improved, the cost can be reduced.
- a bus bar 410 is formed by screws.
- the negative electrode connecting portion 111 and the negative electrode terminal 105 may be fastened.
- FIG. 21 is a perspective view showing an electrode connection apparatus for an assembled battery according to the fifth embodiment.
- 22 is a schematic side view seen from the direction E of FIG.
- the protrusion 142 (terminal side fitting portion) of the positive terminal 104 is fitted inside the opening 117 (bus bar side fitting portion) of the bus bar 110A.
- a pair of protrusions 542A and 542B provided on the positive terminal 504 constitute a terminal-side fitting portion, and the pair of protrusions 542A and 542B.
- a positive electrode connecting portion 516 that is a fitting portion on the bus bar 510 side is disposed therebetween.
- the shapes of the positive electrode connecting portion 516 and the positive electrode terminal 504 are different from those of the first embodiment, and other configurations are the same as those of the first embodiment.
- the positive electrode terminal 504 includes a substantially rectangular parallelepiped positive electrode base portion 541 and a pair of protrusion portions 542A and 542B protruding upward from the upper surface of the positive electrode base portion 541.
- the upper surface of the positive electrode base portion 541 is a flat surface with which the bus bar 510 is in contact.
- the pair of protrusions 542A and 542B are provided parallel to the X direction along the sides of the positive electrode terminal 504 at both ends in the Y direction.
- the thickness tp of the positive electrode connection portion 516 is approximately the same as the height hp of the protrusions 542A and 542B of the positive electrode terminal 504 (tp ⁇ hp).
- the lower end of the positive electrode connecting portion 516 is chamfered to form a tapered portion 516t.
- the inside of the upper end of the pair of protrusions 542A and 542B of the positive electrode terminal 504 is chamfered to form a tapered portion 542t. For this reason, the insertion property of the positive electrode connection portion 516 between the pair of protrusions 542A and 542B of the positive electrode terminal 504 is improved. Note that R chamfering may be performed instead of C chamfering.
- FIG. 23 is a schematic plan view showing an electrode connection apparatus for an assembled battery according to the fifth embodiment.
- FIG. 23 is a view similar to FIG. 7, and in FIG. 23, one unit cell (first unit cell 501A) constituting the assembled battery and another unit cell (second unit cell) adjacent to the first unit cell 501A.
- the battery 501 ⁇ / b> B) is shown in the reference position. Note that the curvatures of a first outer peripheral curved surface 516a and a second outer peripheral curved surface 516b of a positive electrode connecting portion 516 described later are exaggerated and greatly illustrated for convenience.
- one protrusion 542A is provided with a first inner plane 543a
- the other protrusion 542B is provided with a second inner plane 543b.
- the first inner plane 543a and the second inner plane 543b are provided so as to be parallel to the X direction, respectively.
- a concave fitting space is formed by the first inner plane 543a, the second inner plane 543b, and the upper surface of the positive electrode base portion 541.
- the fitting space is open at both ends in the X direction, and the positive electrode connecting portion 516 is disposed in the fitting space.
- the positive electrode connection portion 516 is provided with a first outer peripheral curved surface 516a facing the first inner flat surface 543a and a second outer peripheral curved surface 516b facing the second inner flat surface 543b.
- first outer peripheral curved surface 516a the center side of the first outer peripheral curved surface 516a swells toward the first inner flat surface 543a as compared with both ends of the first outer peripheral curved surface 516a.
- second outer peripheral curved surface 516b the center side of the second outer peripheral curved surface 516b swells toward the second inner flat surface 543b as compared with both ends of the second outer peripheral curved surface 516b.
- the maximum value in the Y direction between the first outer peripheral curved surface 516a and the second outer peripheral curved surface 516b of the positive electrode connecting portion 516 is slightly smaller than the distance between the first inner flat surface 543a and the second inner flat surface 543b.
- the fitting hole 112 of the negative electrode connection portion 111 of the bus bar 510 and the shaft portion 152 of the negative electrode terminal 105 are fitted, and the positive electrode connection portion 516 of the bus bar 510 is fitted inside the pair of protrusions 542A and 542B. As a result, the bus bar 510 is positioned.
- the positive electrode connecting portion 516 is fitted inside the pair of protrusions 542A and 542B, the first outer peripheral curved surface 516a and the first inner flat surface 543a, and the second outer peripheral curved surface 516b and the second inner curved surface A space S5 is formed between the flat surface 543b.
- the gap S5 absorbs the relative displacement between the positive electrode connecting portion 516 and the positive electrode terminal 510 due to the displacement of the second single cell 501B with respect to the first single cell 501A when the bus bar 510 is positioned.
- the first outer peripheral curved surface 516a of the positive electrode connecting portion 516 and the first inner flat surface 543a of the protrusion 542A, and the second outer peripheral curved surface 516b and the protrusion 542B of the positive electrode connecting portion 516 are provided.
- the second inner flat surfaces 543b are each butt welded.
- the dimension G1 of the gap between the first outer peripheral curved surface 516a and the first inner plane 543a and the dimension G2 of the gap between the second outer peripheral curved surface 516b and the second inner plane 543b are weldable dimensions Gw, respectively.
- the following areas are set.
- FIG. 24 is a schematic plan view showing a state in which the second unit cell 501B is shifted from the first unit cell 501A in the stacking direction (X direction). As described above, the fitting space formed between the pair of protrusions 542A and 542B is released at both ends in the X direction, and the inner flat surfaces 543a and 543b of the pair of protrusions 542A and 542B and the positive electrode connection portion 516 A space S5 is provided between the outer peripheral curved surfaces 516a and 516b (see FIG. 23).
- the positive electrode connection portion 516 and the positive electrode terminal The relative displacement with respect to 504 is absorbed, and the butt welding region Ap52 in which the gap dimension G1 and the gap dimension G2 are equal to or smaller than the weldable dimension Gw can be secured. Therefore, butt welding can be performed while suppressing the occurrence of welding defects in the butt welding region Ap52.
- the gap S5 Even if the second unit cell 501B is arranged to be shifted from the reference position to the other side (the left side in the drawing) of the stacking direction (X direction) with respect to the first unit cell 501A, the gap S5 Thus, the relative displacement between the positive electrode connecting portion 516 and the positive electrode terminal 504 is absorbed, and the bus bar 510 can be disposed at a position where it can be butt welded to the positive electrode terminal 504.
- FIG. 25 is a schematic plan view showing a state in which the second unit cell 501B is displaced in the width direction (Y direction) with respect to the first unit cell 501A.
- the bus bar 510 has the negative electrode terminal 105 with respect to the reference position. It is mounted in a state where it is rotated by a predetermined angle with the shaft portion 152 as the rotation center.
- the fitting space formed between the pair of protrusions 542A and 542B is released at both ends in the X direction, and the inner flat surfaces 543a and 543b of the pair of protrusions 542A and 542B and the positive electrode connection portion 516 A space S5 is provided between the outer peripheral curved surfaces 516a and 516b (see FIG. 23).
- the second unit cell 501B is shifted from the reference position to one side (the upper side in the drawing) of the first unit cell 501A with respect to the first unit cell 501A, the positive electrode connection portion 516 and the positive terminal
- the relative displacement with respect to 504 is absorbed, and the butt welding region Ap53 in which the gap dimension G1 and the gap dimension G2 are equal to or smaller than the weldable dimension Gw can be secured. Therefore, butt welding can be performed in the butt welding region Ap53 while suppressing generation of welding defects.
- the gap The relative displacement between the positive electrode connecting portion 516 and the positive electrode terminal 504 is absorbed by S5, and the bus bar 510 can be disposed at a position where it can be butt welded to the positive electrode terminal 504.
- the second unit cell 501B is displaced from the reference position by a predetermined distance in the X direction with respect to the first unit cell 501A and by a predetermined distance in the Y direction.
- Positioning is performed so that butt welding is possible.
- the bus bar 510 can be easily positioned even if the unit cell 501 is misaligned. Can be connected to the negative electrode terminal 105 and the positive electrode terminal 504. Since the manufacturability is improved, the cost can be reduced.
- a bus bar 510 is used by screws.
- the negative electrode connecting portion 111 and the negative electrode terminal 105 may be fastened.
- FIG. 26 is a perspective view showing an electrode connection device for an assembled battery according to the sixth embodiment
- FIG. 27 is a schematic plan view of the electrode connection device.
- FIG. 27 is a view similar to FIG. 23.
- one unit cell (first unit cell 601A) constituting the assembled battery and another unit cell (second unit cell) adjacent to the first unit cell 601A. 601B) shows a state of being arranged at the reference position.
- the pair of protrusions 542A and 542B form a pair of flat surfaces 543a and 543b parallel to the X direction, and the pair of curved surfaces 516a and 516b facing the pair of flat surfaces 543a and 543b, respectively. It was provided in the positive electrode connection part 516.
- a pair of flat surfaces 616a and 616b parallel to the X direction are provided on the positive electrode connecting portion 616 that is a fitting portion on the bus bar 610 side
- Curved surfaces 643a and 643b facing the pair of flat surfaces 616a and 616b are provided on the pair of protrusions 642A and 642B constituting the terminal-side fitting portion of the positive electrode terminal 604, respectively.
- the positive electrode connection portion 616 has a substantially rectangular flat plate shape.
- the positive electrode connection portion 616 includes a first outer peripheral plane 616a and a second outer peripheral plane 616b that are parallel to the X direction at the reference position. It has been.
- one protrusion 642A is provided with a first inner curved surface 643a facing the first outer peripheral plane 616a, and the other protrusion 642B is opposed to the second outer peripheral plane 616b.
- a second inner curved surface 643b is provided.
- the center side of the first inner curved surface 643a swells toward the first outer peripheral plane 616a as compared to both ends of the first inner curved surface 643a.
- the center side of the second inner curved surface 643b swells toward the second outer peripheral plane 616b as compared with both ends of the second inner curved surface 643b.
- the minimum distance in the Y direction between the first inner curved surface 643a of the protrusion 642A and the second inner curved surface 643b of the protrusion 642B is slightly longer than the dimension in the Y direction of the positive electrode connection portion 616.
- a recessed fitting space is formed by the first inner curved surface 643a, the second inner curved surface 643b, and the upper surface of the positive electrode base portion 641.
- the fitting space is open at both ends in the X direction, and the positive electrode connection portion 616 is disposed in this fitting space.
- the fitting hole 112 of the negative electrode connection portion 111 of the bus bar 610 and the shaft portion 152 of the negative electrode terminal 105 are fitted, and the positive electrode connection portion 616 of the bus bar 610 is fitted inside the pair of protrusions 642A and 642B. As a result, the bus bar 610 is positioned.
- the positive electrode connecting portion 616 is fitted inside the pair of projecting portions 642A and 642B, as shown in FIG. 27, between the first inner curved surface 643a and the first outer peripheral plane 616a and the second inner side.
- a gap S6 is formed between the curved surface 643b and the second outer peripheral plane 616b.
- the gap S6 absorbs the relative displacement between the positive electrode connecting portion 616 and the positive electrode terminal 610 caused by the displacement of the second single cell 601B with respect to the first single cell 601A when the bus bar 610 is positioned.
- the second inner curved surface 643b is butt welded.
- the dimension G1 of the gap between the first outer peripheral plane 616a and the first inner curved surface 643a and the dimension G2 of the gap between the second outer peripheral plane 616b and the second inner curved surface 643b are weldable dimensions Gw, respectively.
- the following areas are set.
- FIG. 28 is a schematic plan view showing a state in which the second unit cell 601B is shifted in the stacking direction (X direction) with respect to the first unit cell 601A.
- the fitting space formed between the pair of protrusions 642A and 642B is released at both ends in the X direction, the inner curved surfaces 643a and 643b of the pair of protrusions 642A and 642B, and the positive electrode connection portion 616.
- a gap S6 is provided between the outer peripheral planes 616a and 616b (see FIG. 27).
- the positive electrode connection portion 616 and the positive electrode terminal The relative displacement with respect to 604 is absorbed, and the butt welding region Ap62 in which the gap dimension G1 and the gap dimension G2 are equal to or smaller than the weldable dimension Gw can be secured. Therefore, butt welding can be performed in the butt welding region Ap62 while suppressing generation of welding defects.
- the gap S6 Even if the second unit cell 601B is arranged to be shifted from the reference position to the other side (the left side in the drawing) of the stacking direction (X direction) with respect to the first unit cell 601A, the gap S6 Thus, the relative displacement between the positive electrode connecting portion 616 and the positive electrode terminal 604 is absorbed, and the bus bar 610 can be disposed at a position where it can be butt welded to the positive electrode terminal 604.
- FIG. 29 is a schematic plan view showing a state in which the second unit cell 601B is displaced in the width direction (Y direction) with respect to the first unit cell 601A.
- the bus bar 610 is positioned at the negative electrode terminal 105 with respect to the reference position. It is mounted in a state where it is rotated by a predetermined angle with the shaft portion 152 as the rotation center.
- the fitting space formed between the pair of protrusions 642A and 642B is released at both ends in the X direction, the inner curved surfaces 643a and 643b of the pair of protrusions 642A and 642B, and the positive electrode connection portion 616.
- a gap S6 is provided between the outer peripheral planes 616a and 616b (see FIG. 27).
- the gap The relative displacement between the positive electrode connecting portion 616 and the positive electrode terminal 604 is absorbed by S6, and the bus bar 610 can be disposed at a position where it can be butt welded to the positive electrode terminal 604.
- the second unit cell 601B is displaced from the reference position by a predetermined distance in the X direction with respect to the first unit cell 601A and is displaced by a predetermined distance in the Y direction. Also, by fitting the fitting hole 112 of the bus bar 610 to the shaft portion 152 of the negative electrode terminal 105 and fitting the positive electrode connection portion 616 of the bus bar 610 between the pair of protrusions 642A and 642B of the positive electrode terminal 604, Positioning is performed so that butt welding is possible.
- the bus bar 610 can be easily positioned and the bus bar 610 can be easily positioned even when the cell 601 is misaligned. Can be connected to the negative electrode terminal 105 and the positive electrode terminal 604. Since the manufacturability is improved, the cost can be reduced.
- a bus bar 610 is used by screws.
- the negative electrode connecting portion 111 and the negative electrode terminal 105 may be fastened.
- the negative electrode terminal 105 is provided with the shaft portion 152, the bus bar is configured to be rotatable around the shaft portion 152, and the gap for allowing the displacement is provided on the positive electrode side.
- the present invention is not limited to this.
- the configurations of the positive electrode side and the negative electrode side may be reversed, that is, the bus bar may be configured to be rotatable on the positive electrode side, and a gap for allowing positional deviation may be provided on the negative electrode side.
- the bus bar 410 is rotatable around the shaft portion 152 of the negative electrode terminal 105 and is positioned after the position is shifted in accordance with the positional deviation. Is not limited to this.
- the bus bar 410 may not be rotatable about the shaft portion 152 of the negative electrode terminal 105 as the rotation center. In this case, it is possible to easily position the bus bar 410 when the unit cells 401 are displaced in the Y direction.
- the lithium ion secondary battery has been described as an example of the rectangular battery constituting the assembled battery, the present invention is not limited to this.
- the present invention can be applied to various prismatic secondary batteries in which charging / discharging elements such as nickel metal hydride batteries are accommodated in a container.
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Abstract
Description
図1は第1の実施の形態に係る組電池100の外観を示す斜視図であり、図2は組電池100の構成を示す斜視図である。なお、本実施の形態では、正極端子104および負極端子105が設けられる電池蓋側を組電池100の上側、電池底面側を組電池100の下側として説明する。図1に示すように、組電池100の上下方向をZ方向とし、組電池100を構成する複数の単電池101の積層方向、すなわち組電池100の長手方向をX方向とし、X方向およびZ方向のそれぞれに直交する方向、すなわち組電池100の幅方向をY方向として説明する。
(1)バスバー110Aと第1単電池101Aの負極端子105と第2単電池101Bの正極端子104とから構成される電極接続装置は、端子側嵌合部である突起部142とバスバー側嵌合部である開口部117とからなる空隙形成部を備えている。空隙形成部により、第1単電池101Aに対して第2単電池101Bが基準位置からX方向および/またはY方向にずれて配置されたときに、正極接続用部116と正極端子104との相対変位を吸収する空隙S1が形成されている。このため、第1単電池101Aに対して第2単電池101Bが基準位置からずれて配置されている場合であっても、バスバー110Aの嵌合孔112を負極端子105の軸部152に嵌合させ、バスバー110Aの開口部117を正極端子104の突起部142に嵌合させるだけで、突合せ溶接が可能な位置にバスバー110Aを位置決めすることができる。その結果、単電池101の位置ずれが生じている場合であっても、溶接欠陥の発生を抑えつつ、バスバー110Aの開口部117の内周湾曲面117a,117bと正極端子104の突起部142の外周平面142a,142bとを突合せ溶接することができる。
図10を参照して第1の実施の形態の変形例に係る組電池の電極接続装置について説明する。なお、図中、第1の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。第1の実施の形態では、負極端子105の軸部152の外周面と、バスバー110Aの負極接続用部111の嵌合孔112の内周面とを突合せ溶接した例について説明した。これに対して、第1の実施の形態の変形例では、突合せ溶接に代えて、ねじ190により、バスバー110Aの負極接続用部111と負極端子105とが締結されている。
図11~図13を参照して第2の実施の形態に係る組電池を説明する。なお、図中、第1の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。図11は第2の実施の形態に係る組電池の電極接続装置を示す平面模式図である。図11は図7と同様の図であり、図11では、組電池を構成する一の単電池(第1単電池201A)および第1単電池201Aに隣接する他の単電池(第2単電池201B)が基準位置に配置された状態を示している。なお、後述する突起部242の第1外周湾曲面242aおよび第2外周湾曲面242bのそれぞれの曲率は、便宜上、誇張して大きく図示されている。
図14を参照して第2の実施の形態の変形例に係る組電池の電極接続装置について説明する。なお、図中、第2の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。第2の実施の形態では、負極端子105の軸部152の外周面と、バスバー210の負極接続用部111の嵌合孔112の内周面とを突合せ溶接した例について説明した。これに対して、第2の実施の形態の変形例では、突合せ溶接に代えて、ねじ190により、バスバー210の負極接続用部111と負極端子105とが締結されている。
図15~図17を参照して第3の実施の形態に係る組電池を説明する。なお、図中、第2の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。図15は第3の実施の形態に係る組電池の電極接続装置を示す平面模式図である。図15は図11と同様の図であり、図15では、組電池を構成する一の単電池(第1単電池301A)および第1単電池301Aに隣接する他の単電池(第2単電池301B)が基準位置に配置された状態を示している。
図18を参照して第3の実施の形態の変形例に係る組電池の電極接続装置について説明する。なお、図中、第3の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。第3の実施の形態では、負極端子105の軸部152の外周面と、バスバー310の負極接続用部111の嵌合孔112の内周面とを突合せ溶接した例について説明した。これに対して、第3の実施の形態の変形例では、突合せ溶接に代えて、ねじ190により、バスバー310の負極接続用部111と負極端子105とが締結されている。
図19および図20を参照して第4の実施の形態に係る組電池を説明する。なお、図中、第3の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。図19は第4の実施の形態に係る組電池の電極接続装置を示す平面模式図である。図19は図15と同様の図であり、図19では、組電池を構成する一の単電池(第1単電池401A)および第1単電池401Aに隣接する他の単電池(第2単電池401B)が基準位置に配置された状態を示している。
図21~図25を参照して第5の実施の形態に係る組電池を説明する。なお、図中、第1の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。図21は第5の実施の形態に係る組電池の電極接続装置を示す斜視図である。図22は、図21のE方向から見た側面模式図である。
図26~図29を参照して第6の実施の形態に係る組電池を説明する。なお、図中、第5の実施の形態と同一もしくは相当部分には同一の参照番号を付し、相違点を主に説明する。図26は第6の実施の形態に係る組電池の電極接続装置を示す斜視図であり、図27は電極接続装置の平面模式図である。図27は図23と同様の図であり、図27では、組電池を構成する一の単電池(第1単電池601A)および第1単電池601Aに隣接する他の単電池(第2単電池601B)が基準位置に配置された状態を示している。なお、後述する突起部642Aの第1内側湾曲面643aおよび突起部642Bの第2内側湾曲面643bのそれぞれの曲率は、便宜上、誇張して大きく図示されている。
(1)第5の実施の形態および第6の実施の形態では、バスバー510,610と正極端子504,604とを突合せ溶接した例について説明したが、本発明はこれに限定されない。図30および図31において斜線でしめす重ね合せ溶接領域Awで、バスバー510,610と正極端子504,604とを重ね合せ溶接してもよい。
Claims (11)
- 積層配置された複数の単電池をバスバーで接続してなる組電池であって、
前記単電池は、第1電極端子と第2電極端子とを有し、
前記バスバーは、一の単電池の第1電極端子に接続される第1電極接続用部と、前記一の単電池に隣接する他の単電池の第2電極端子に接続される第2電極接続用部とを有し、
前記バスバーと前記一の単電池の第1電極端子と前記他の単電池の第2電極端子とにより構成される接続装置は、前記一の単電池に対して前記他の単電池が基準位置から前記複数の単電池の積層方向および/または前記積層方向と直交する方向にずれて配置されたときに、前記第2電極接続用部と前記第2電極端子との相対変位を吸収する空隙を形成する空隙形成部を備え、
前記第2電極端子と、前記第2電極接続用部とが突合せ溶接または重ね合せ溶接されている組電池。 - 請求項1に記載の組電池において、
前記第1電極端子は、前記第1電極接続用部が当接される第1ベース部と、前記第1ベース部に突設される軸部とを有し、
前記第1電極接続用部には、前記第1電極端子の前記軸部に嵌合される嵌合孔が設けられ、
前記第2電極端子は、前記第2電極接続用部が当接される第2ベース部と、前記第2ベース部に設けられる端子側嵌合部とを有し、
前記第2電極接続用部は、前記端子側嵌合部に嵌合されるバスバー側嵌合部を有し、
前記空隙形成部は、前記端子側嵌合部と、前記バスバー側嵌合部とからなる組電池。 - 請求項2に記載の組電池において、
前記第1電極接続用部と前記第1電極端子とは、前記第1電極接続用部の嵌合孔と前記第1電極端子の前記軸部とが回動自在に嵌合された後、溶接され、または、締結部材により締結されている組電池。 - 請求項3に記載の組電池において、
前記端子側嵌合部は、前記積層方向と平行になるように設けられた一対の平面を有し、
前記バスバー側嵌合部は、前記一対の平面のそれぞれに対向する一対の湾曲面を有し、
前記湾曲面は、前記湾曲面の両端に比べて前記湾曲面の中央側が前記湾曲面に対向する前記平面側に膨らんでいる組電池。 - 請求項4に記載の組電池において、
前記バスバー側嵌合部は、前記一対の湾曲面を有する開口部であり、
前記端子側嵌合部は、前記一対の平面を有する突起部である組電池。 - 請求項4に記載の組電池において、
前記端子側嵌合部は、一対の突起部により構成され、
前記一対の突起部は、それぞれ前記平面を有し、
前記バスバー側嵌合部は、前記一対の突起部間に配置されている組電池。 - 請求項3に記載の組電池において、
前記バスバー側嵌合部には、互いに平行な一対の平面が設けられ、
前記端子側嵌合部には、前記一対の平面のそれぞれに対向する一対の湾曲面が設けられ、
前記湾曲面は、前記湾曲面の両端に比べて前記湾曲面の中央側が前記湾曲面に対向する前記平面側に膨らんでいる組電池。 - 請求項7に記載の組電池において、
前記バスバー側嵌合部は、前記一対の平面が前記積層方向と平行になるように設けられた開口部であり、
前記端子側嵌合部は、前記一対の湾曲面を有する突起部である組電池。 - 請求項7に記載の組電池において、
前記端子側嵌合部は、一対の突起部により構成され、
前記一対の突起部は、それぞれ前記湾曲面を有し、
前記バスバー側嵌合部は、前記一対の平面が前記積層方向と平行になるように、前記一対の突起部間に配置されている組電池。 - 請求項2に記載の組電池において、
前記軸部の先端部および前記嵌合孔の前記第1ベース部側の端部、ならびに、前記端子側嵌合部の先端部および前記バスバー側嵌合部の前記第2ベース部側の端部のそれぞれには面取りが施されている組電池。 - 請求項2に記載の組電池において、
前記軸部は、円柱形状であり、
前記第1電極接続用部に設けられる前記嵌合孔は、円形状であり、
前記第1電極接続用部には、単電池の電圧を検出するための電圧検出線が接続される接続端子が設けられ、
前記軸部の外周面と前記嵌合孔の内周面とは、前記軸部の全周に亘って突合せ溶接されている組電池。
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CN108604659B (zh) * | 2016-01-29 | 2021-04-02 | 三洋电机株式会社 | 电源装置、使用该电源装置的车辆以及汇流条 |
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JP6635196B2 (ja) * | 2016-05-31 | 2020-01-22 | 株式会社村田製作所 | 電池およびその製造方法 |
JP6434468B2 (ja) * | 2016-09-30 | 2018-12-05 | 株式会社オートネットワーク技術研究所 | 接続モジュール |
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US10734629B2 (en) * | 2018-02-23 | 2020-08-04 | Ford Global Technologies, Llc | Busbar interconnect assembly for vehicle traction battery |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012243689A (ja) * | 2011-05-23 | 2012-12-10 | Sanyo Electric Co Ltd | 電源装置、電源装置を備える車両並びにバスバー |
JP2012252811A (ja) * | 2011-05-31 | 2012-12-20 | Sanyo Electric Co Ltd | 電源装置、電源装置を備える車両、バスバー |
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JP2011233491A (ja) * | 2010-04-08 | 2011-11-17 | Denso Corp | 電池パック及び電極端子間の接続方法 |
JP2011253779A (ja) * | 2010-06-04 | 2011-12-15 | Nissan Motor Co Ltd | 組電池 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012243689A (ja) * | 2011-05-23 | 2012-12-10 | Sanyo Electric Co Ltd | 電源装置、電源装置を備える車両並びにバスバー |
JP2012252811A (ja) * | 2011-05-31 | 2012-12-20 | Sanyo Electric Co Ltd | 電源装置、電源装置を備える車両、バスバー |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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