WO2017126272A1 - Assembled battery - Google Patents

Assembled battery Download PDF

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Publication number
WO2017126272A1
WO2017126272A1 PCT/JP2016/087673 JP2016087673W WO2017126272A1 WO 2017126272 A1 WO2017126272 A1 WO 2017126272A1 JP 2016087673 W JP2016087673 W JP 2016087673W WO 2017126272 A1 WO2017126272 A1 WO 2017126272A1
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WO
WIPO (PCT)
Prior art keywords
terminal
assembled battery
battery
bus bar
cell
Prior art date
Application number
PCT/JP2016/087673
Other languages
French (fr)
Japanese (ja)
Inventor
季之 本橋
小野　仁
由和 高松
貴之 平瀬
Original Assignee
カルソニックカンセイ株式会社
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
Application filed by カルソニックカンセイ株式会社 filed Critical カルソニックカンセイ株式会社
Publication of WO2017126272A1 publication Critical patent/WO2017126272A1/en

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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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/591—Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
    • 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.
  • Patent Document 1 discloses an assembled battery configured by arranging a plurality of lithium ion cells on a frame member.
  • a plurality of terminals 620 are provided at the same height (see FIG. 12). However, when a plurality of terminals are provided at the same height, they are not distinguished from each other, so that there is a possibility that wiring is performed erroneously.
  • An object of the present invention made in view of such a viewpoint is to provide an assembled battery capable of preventing erroneous wiring.
  • the assembled battery according to the first aspect is: A pedestal having a plurality of steps to which a plurality of components are attached, and one or more battery cells,
  • the pedestal has a first terminal between the one or more battery cells and an alternator, a second terminal between the one or more battery cells and a load, and a third terminal used for grounding.
  • the third terminal is provided in a different stage from the first terminal and the second terminal.
  • the assembled battery according to the second aspect is The assembled battery further includes a cell holder that holds the one or more battery cells, The pedestal is assembled with the cell holder via a total minus bus bar connected to the third terminal on the side opposite to the mounting surface on which the third terminal is provided, The third terminal is preferably provided at a lower level than the first terminal and the second terminal.
  • An assembled battery according to the third aspect is It is preferable that the third terminal, the first terminal, and the second terminal are provided at an edge portion in contact with the same side surface.
  • the assembled battery according to the fourth aspect is The third terminal, the first terminal, and the second terminal are preferably provided upward from the mounting surface of the pedestal.
  • An assembled battery according to the fifth aspect is It is preferable that the plurality of components are also provided upward from the placement surface.
  • the productivity of the auxiliary module and the assembled battery is improved.
  • FIG. 6 is a top view of the lower case of FIG. 5.
  • FIG. 5 is an external appearance perspective view of the cell holder of FIG.
  • FIG. 7 is an external appearance perspective view which shows the state which attached the cell holder of FIG. 7 to the lower case of FIG.
  • FIG. 1 is an external perspective view of an assembled battery according to an embodiment of the present invention, and is an external perspective view showing a state where an upper case of the assembled battery is removed. However, in FIG. 1, the depiction of each part is shown in a simplified manner. Refer to FIGS. 5 to 15 for details of each component.
  • the assembled battery 100 includes a lower case 110 that houses battery cells, a cell holder 120 that holds battery cells housed in the lower case 110 on a side to which the upper case is attached (hereinafter also referred to as “upper surface side”), and a cell holder 120. 1 is provided with an auxiliary machine base 200 attached to the upper surface side, various parts attached to the auxiliary machine base 200, and an upper case (not shown in FIG. 1) for protecting the various parts.
  • the auxiliary machine base 200 corresponds to the base of the present invention.
  • the assembled battery 100 includes a MOSFET (metal oxide semiconductor field effector transistor) 210, a relay 220, a current sensor 230, and a fusible link 240 as various components attached to the auxiliary machine base 200.
  • the assembled battery 100 includes three terminals, that is, an SSG (Side Start) Generator) terminal 250, a LOAD terminal 260, and a GND terminal 270 that protrude outside the upper case when the upper case is attached.
  • SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 correspond to the first terminal, the second terminal, and the third terminal of the present invention, respectively.
  • the assembled battery 100 will be described as being used by being mounted on a vehicle such as a vehicle equipped with an internal combustion engine or a hybrid vehicle capable of traveling with the power of both the internal combustion engine and the electric motor.
  • a vehicle such as a vehicle equipped with an internal combustion engine or a hybrid vehicle capable of traveling with the power of both the internal combustion engine and the electric motor.
  • the use of the battery 100 is not limited to the vehicle.
  • FIG. 2 is a functional block diagram showing an outline of a power supply system including the assembled battery 100 shown in FIG.
  • the power supply system 400 includes an assembled battery 100, an alternator 410, a starter 420, a second secondary battery 430, a load 440, a switch 450, and a control unit 460.
  • the assembled battery 100 includes a first secondary battery 130 housed in the lower case 110.
  • the first secondary battery 130, the alternator 410, the starter 420, the second secondary battery 430, and the load 440 are connected in parallel.
  • the assembled battery 100 includes a MOSFET 210, a relay 220, a current sensor 230, a fusible link 240, a first secondary battery 130, and a battery controller (LBC) 140.
  • Relay 220, current sensor 230, fusible link 240, and first secondary battery 130 are connected in series in this order.
  • MOSFET 210 is connected in series to second secondary battery 430 and load 440.
  • the SSG terminal 250 is between the battery cell 150 and the alternator 410 and is connected to the alternator 410.
  • the LOAD terminal 260 is between the battery cell 150 and the load 440 and is connected to the load 440.
  • the SSG terminal 250 may be separately connected to the starter 420 and the alternator 410 as in the present embodiment, or may be connected to an integrated motor of the starter 420 and the alternator 410 as an alternative example.
  • the GND terminal 270 is used for grounding.
  • the relay 220 functions as a switch that connects or disconnects the first secondary battery 130 in parallel with each component outside the assembled battery 100 in the power supply system 400.
  • the current sensor 230 has an appropriate structure and measures the current flowing through the circuit including the first secondary battery 130 by an appropriate method.
  • the fusible link 240 includes a fuse body, a housing made of an insulating resin that accommodates and holds the fuse body, and a cover made of an insulating resin that covers the housing, and is blown when an overcurrent occurs.
  • the first secondary battery 130 is constituted by an assembly of battery cells 150 accommodated in the lower case 110 as shown in FIG. 3 in which the lower case 110 and the cell holder 120 are transparent.
  • Each battery cell 150 constituting the first secondary battery 130 is a secondary battery such as a lithium ion battery or a nickel metal hydride battery.
  • the first secondary battery 130 has a positive electrode side connected to the fusible link 240 and a negative electrode side grounded via a GND terminal 270.
  • the MOSFET 210 functions as a switch that connects or disconnects the second secondary battery 430 and the load 440 in parallel with other components in the power supply system 400.
  • the LBC 140 is connected to the first secondary battery 130 and estimates the state of the first secondary battery 130. For example, the LBC 140 estimates a state of charge (SOC) of the first secondary battery 130 and the like.
  • SOC state of charge
  • the alternator 410 is a generator and is mechanically connected to the vehicle engine. Alternator 410 generates power by driving the engine. The electric power generated by the alternator 410 by driving the engine can be supplied to the first secondary battery 130, the second secondary battery 430, and the load 440 included in the assembled battery 100 with the output voltage adjusted by a regulator. The alternator 410 can generate power by regeneration when the vehicle is decelerated. The electric power regenerated by the alternator 410 is used to charge the first secondary battery 130 and the second secondary battery 430.
  • the starter 420 is configured to include a cell motor, for example, and receives power supply from at least one of the first secondary battery 130 and the second secondary battery 430 to start the engine of the vehicle.
  • the second secondary battery 430 is composed of, for example, a lead storage battery and supplies power to the load 440.
  • the load 440 includes, for example, an audio, an air conditioner, and a navigation system provided in the vehicle, and operates by consuming the supplied power.
  • the load 440 operates by receiving power supply from the first secondary battery 130 while the engine driving is stopped, and operates by receiving power supply from the alternator 410 and the second secondary battery 430 while driving the engine.
  • the switch 450 is connected in series with the starter 420.
  • the switch 450 connects or disconnects the starter 420 in parallel with other components.
  • the control unit 460 controls the overall operation of the power supply system 400.
  • the control unit 460 is configured by, for example, an ECU (Electric Control Unit or Engine Control Unit) of the vehicle.
  • the control unit 460 controls the operation of the switch 450, the MOSFET 210, and the relay 220, respectively, and supplies power by the alternator 410, the first secondary battery 130, and the second secondary battery 430, and the first secondary battery 130.
  • the second secondary battery 430 is charged.
  • FIG. 4 is an exploded perspective view of the battery pack of FIG.
  • FIG. 5 is an external perspective view of the lower case 110
  • FIG. 6 is a top view of the lower case 110
  • FIG. 7 is an external perspective view of the cell holder 120.
  • 7A is an external perspective view from the upper surface side of the cell holder 120
  • FIG. 7B is an external perspective view from the opposite side (hereinafter also referred to as “lower surface side”) of the cell holder 120.
  • FIG. 8 is an external perspective view showing a state where the cell holder 120 is attached to the lower case 110.
  • FIG. 8 is an external perspective view showing a state where the cell holder 120 is attached to the lower case 110.
  • FIG. 9 is an enlarged external perspective view of the inter-cell bus bar 160 attached to the cell holder 120.
  • FIG. 10 is a diagram schematically illustrating the bonding positions of the battery cell 150, the lower case 110, and the cell holder 120 in the assembled battery 100.
  • FIG. 11 is a diagram schematically showing a state before and after the engagement claw 128 of the cell holder 120 and the engagement hole 115 of the lower case 110 are engaged.
  • FIG. 12 is an external perspective view of the auxiliary machine pedestal 200
  • FIG. 13 is a side view of the auxiliary machine pedestal 200 viewed from one side.
  • FIG. 13A is a side view of the auxiliary machine base 200 only
  • FIG. 13B is a side view of the auxiliary machine base 200 with components such as the relay 220 mounted thereon.
  • FIG. 13 (c) is a side view when the auxiliary machine base 200 is viewed from another side surface.
  • FIG. 14 is an external perspective view of the auxiliary machine base 200 showing a state in which the components and the bus bar are attached.
  • FIG. 15 is a top view of the auxiliary machine base 200 showing a state in which the components and the bus bar are fixed by the nut 290.
  • FIG. 16 is a diagram illustrating a state of assembly of the entire assembled battery
  • FIG. 17 is a diagram for illustrating a state of assembly of the battery module group and the accessory module group.
  • the assembled battery 100 according to the present embodiment is assembled by assembling the battery module group and the accessory module group, then assembling the battery module group and the accessory module group, and fixing the upper case. That is, since the battery module group and the accessory module group can be assembled separately, assembly tact and assembly loss can be reduced.
  • the battery module group includes a battery cell 150, a lower case 110 that houses the battery cell 150, a cell holder 120 that holds the battery cell 150, an inter-cell bus bar 160, a total positive terminal bus bar 164, and a total negative terminal bus bar 165. , And LBC 140 are assembled.
  • the battery cell 150 included in the assembled battery 100 has a substantially rectangular parallelepiped shape.
  • the assembled battery 100 of this embodiment accommodates five battery cells 150
  • the number of battery cells 150 that can be accommodated by the assembled battery 100 is not limited to five.
  • the number of battery cells 150 that can be accommodated in the assembled battery 100 is appropriately determined according to the maximum output of the battery cells 150 and the power consumed by a driven device such as a vehicle.
  • the lower case 110 is a housing having a space 110a that can accommodate the battery cells 150 from the upper surface side. That is, the lower case 110 has a bottom surface 111 and four side surfaces 112a, 112b, 112c, and 112d, and an opening 113 on the opposite side (that is, the top surface side) of the bottom surface 111.
  • the side surfaces 112a and 112c face each other, and the side surfaces 112b and 112d face each other.
  • the side surface 112 when the four side surfaces 112a, 112b, 112c, and 112d are not distinguished, they are collectively referred to as the side surface 112.
  • the height of the side surface 112 is lower than the height of the battery cell 150 accommodated in the lower case 110.
  • the side surfaces 112b and 112d include an attachment mechanism 114 for attaching the assembled battery 100 to the vehicle on the outside of the lower case 110 (that is, on the opposite side of the space 110a).
  • the attachment mechanism 114 is appropriately determined in shape and position on the side surfaces 112b and 112d in accordance with the attachment method with the vehicle.
  • the side surface 112 has an engagement hole 115 for engagement with the cell holder 120 on the opening 113 side.
  • each side surface 112 has three engagement holes 115 in the center on the opening 113 side and in the vicinity of both ends.
  • the bottom surface 111 is provided with a guide 116 on the inner side of the lower case 110 (that is, on the space 110a side) for indicating the position of the battery cell 150 to be accommodated and preventing displacement of the battery cell 150 accommodated.
  • the guide 116 also has a function of maintaining the space between the battery cells 150. For example, an insulating sheet or the like may be inserted in the space between the battery cells 150 formed by the guide 116.
  • the height of the guide 116 is lower than the height of the side surface 112.
  • four guides 116 are provided at equal intervals in parallel to the side surfaces 112b and 112d. That is, in the present embodiment, the lower case 110 accommodates five battery cells 150 arranged so as to be stacked from the side surface 112b to the side surface 112d along each region of the bottom surface 111 divided into five by the guide 116. To do.
  • the side surfaces 112a and 112c that do not include the mounting mechanism 114 are less likely to cause dimensional errors than the side surfaces 112b and 112d that include the mounting mechanism 114. Therefore, the battery cells 150 accommodated in the lower case 110 are stacked in the lower case 110 by arranging the battery cells 150 so as to be stacked in the direction of the side surfaces 112a and 112c as in the present embodiment. It becomes difficult to slip.
  • the position, size, and the like of the guide 116 are appropriately determined according to the shape, quantity, and the like of the battery cell 150 accommodated in the lower case 110.
  • the battery cell 150 has a positive electrode terminal 152 and a negative electrode terminal 153 on one cap surface 151 having a substantially rectangular parallelepiped shape.
  • the cap surface 151 has a rectangular shape having a long side and a short side, and the positive electrode terminal 152 and the negative electrode terminal 153 are provided near both ends of the cap surface 151 in the long side direction.
  • a safety valve that is opened at the center of the cap surface 151 to discharge gas to the outside when gas is generated inside the battery cell 150 due to aging, thermal runaway, or the like and the pressure inside the battery cell 150 exceeds a predetermined value. 154 is provided.
  • the battery cell 150 is accommodated in the lower case 110 so that the cap surface 151 protrudes from the opening 113, that is, on the upper surface side. As shown in FIG. 4, in the lower case 110, the battery cell 150 is accommodated in the lower case 110 such that the arrangement of the positive electrode terminal 152 and the negative electrode terminal 153 of the battery cells 150 adjacent to each other is reversed.
  • the cell holder 120 is attached to the cap surface 151 side of the battery cell 150, that is, the opening 113 side of the lower case 110.
  • the cell holder 120 is substantially rectangular in a top view, and holds the battery cell 150 from the upper surface side in a state where the cell holder 120 is engaged with the lower case 110 inside the outer peripheral frame 121 having a predetermined height and inside the outer peripheral frame 121.
  • a holding lid 122 holds the cap surface 151 of the battery cell 150 accommodated in the lower case 110 from the upper surface side.
  • the outer peripheral frame 121 has four side surfaces 121a, 121b, 121c and 121d.
  • the four side surfaces 121a, 121b, 121c and 121d are arranged at positions corresponding to the four side surfaces 112a, 112b, 112c and 112d of the lower case 110, respectively, in a state where the outer peripheral frame 121 and the lower case 110 are engaged.
  • the outer peripheral frame 121 includes screw hole forming portions 123 having screw holes 123a for fixing the accessory base 200 to the cell holder 120 by screwing at the ends of the side surfaces 121b and 121d.
  • the outer peripheral frame 121 is formed so as to protrude outward from the side surfaces 121b and 121d.
  • the screw hole 123a is formed so that a screw can be inserted from the upper surface side.
  • the outer peripheral frame 121 is used for screwing bus bars (that is, total plus copper bus bars 285 and total minus copper bus bars 286 described later) to the cell holder 120 on the upper surfaces of the side surfaces 121b and 121d. It has a screw hole 123b.
  • the screw holes 123b are preferably provided in the vicinity of an opening 124a to which a total plus terminal bus bar 164 and a total minus terminal bus bar 165 described later are attached.
  • the holding lid 122 has an opening 124 a at a position corresponding to the positive electrode terminal 152 and the negative electrode terminal 153 of the battery cell 150 when the cell holder 120 and the lower case 110 are engaged. That is, as shown in FIG. 8, in the engaged state between the cell holder 120 and the lower case 110, the positive terminal 152 and the negative terminal 153 of the battery cell 150 are exposed from the opening 124 a to the upper surface side of the holding lid 122. .
  • the holding lid 122 has an opening 124b at a position corresponding to the safety valve 154 of the battery cell 150 when the cell holder 120 and the lower case 110 are engaged. That is, as shown in FIG. 8, in the engaged state between the cell holder 120 and the lower case 110, the gas discharged from the safety valve 154 is discharged from the opening 124a to the outside of the battery cell 150.
  • the positive electrode terminal 152 and the negative electrode terminal 153 that are exposed from the opening 124a and aligned in a row are adjacent to each other except for the positive electrode terminal 152 connected to the fusible link 240 and the negative electrode terminal 153 connected to the GND terminal 270.
  • the inter-cell bus bar 160 is made of a conductive metal such as aluminum.
  • the inter-cell bus bar 160 has a convex portion 161 for avoiding interference with the frame portion 122a of the holding lid 122 between the openings 124a in a state where the inter-cell bus bar 160 is connected to the positive electrode terminal 152 and the negative electrode terminal 153. Have.
  • the inter-cell bus bar 160 protrudes from the terminal connection part 162 connecting the two terminal connection parts 162 and the two terminal connection parts 162 connected to the positive electrode terminal 152 and the negative electrode terminal 153 to the upper surface side in a side view. And a convex portion 161.
  • the terminal connecting portion 162 has a welding opening 162a at the center, for example, as shown in FIG.
  • the inter-cell bus bar 160 and the later-described total plus terminal bus bar 164 and total minus terminal bus bar 165 are connected to each terminal of the battery cell 150 by bead welding at the periphery of the welding opening 162a.
  • each terminal connection portion 162 has a voltage sensor attachment terminal 163 that protrudes toward the opening 124b when attached to the cell holder 120.
  • Each voltage sensor attachment terminal 163 has a screw hole 163a.
  • each voltage sensor mounting terminal 163 is arranged on a screw hole forming portion 126 described later when the terminal connection portion 162 of the inter-cell bus bar 160 is connected to the positive terminal 152 or the negative terminal 153. Is formed.
  • the screw hole 163a overlaps with the screw hole 126a formed in the screw hole forming part 126 in a state where the voltage sensor mounting terminal 163 is disposed on the screw hole forming part 126, and the screw hole 126a and screw are screwed by the LBC 140.
  • the holes 163a are screwed together.
  • the voltage sensor attachment terminal 163 is connected to the voltage sensor and used to detect a voltage between the terminals.
  • the total positive terminal bus bar 164 is connected to the positive terminal 152 connected to the fusible link 240, and the total negative terminal bus bar 165 is connected to the negative terminal 153 connected to the GND terminal 270.
  • the total plus terminal bus bar 164 and the total minus terminal bus bar 165 are made of a conductive metal such as aluminum.
  • the total plus terminal bus bar 164 and the total minus terminal bus bar 165 include one terminal connection part 162 and an external connection part 166 for connecting to the total plus copper bus bar 285 and the total minus copper bus bar 286 provided in the auxiliary machine base 200, respectively. Have.
  • the external connection portion 166 has a convex shape that protrudes to the upper surface side of the terminal connection portion 162 so as to sandwich the inner surface and the outer surface of the outer peripheral frame 121.
  • the external connection portion 166 is attached along a bus bar support portion 123 c formed from the inner surface to the outer surface of the outer peripheral frame 121.
  • the external connection part 166 has the screw hole 166a in the position corresponding to the screw hole 123b in the state attached to the outer periphery frame 121.
  • the terminal connection portions 162 of the total plus terminal bus bar 164 and the total minus terminal bus bar 165 also have a voltage sensor mounting terminal 163 that protrudes toward the opening 124b when mounted on the cell holder 120.
  • the holding lid 122 prevents electrical connection between the bus bars between the inter-cell bus bars 160 attached to the cell holder 120 and between the inter-cell bus bar 160 and the total plus terminal bus bar 164 or the total minus terminal bus bar 165. And a bead 125 for positioning the bus bar. The bead 125 projects to the upper surface side of the holding lid 122.
  • the holding lid 122 includes a screw hole forming portion 126 for fixing the LBC 140 on the upper surface side.
  • the screw hole forming portion 126 is formed between the opening 124 a and the opening 124 b on the upper surface side of the holding lid 122. That is, in the present embodiment, the holding lid 122 includes ten screw hole forming portions 126.
  • the screw hole forming portion 126 has a substantially cylindrical shape, and a screw hole 126a is provided at the center.
  • the LBC 140 is placed on the upper surface side of the cell holder 120 and is screwed to the cell holder 120 from the upper surface side using the screw holes 126a formed in the screw hole forming portion 126.
  • the holding lid 122 includes a rib 127 for preventing the displacement of the battery cell 150 accommodated in the lower case 110 on the lower surface side.
  • Four ribs 127 are provided at equal intervals in parallel to the side surfaces 121b and 121d. That is, the rib 127 of the holding lid 122 is provided in a direction and position corresponding to the guide 116 of the lower case 110 in a state where the cell holder 120 and the lower case 110 are engaged.
  • the outer peripheral frame 121 has an engagement insertion portion 121e having a predetermined height over the entire circumference.
  • the engagement insertion portion 121e is thinner than other portions of the outer peripheral frame 121. Therefore, the outer surface of the outer peripheral frame 121 has an engagement insertion portion 121e that is thinner than other portions of the outer peripheral frame 121. It is depressed. As shown in FIG. 11B, the engaging insertion portion 121 e is inserted inside the lower case 110 on the opening 113 side of the lower case 110 when the cell holder 120 is engaged with the lower case 110.
  • the engagement insertion portion 121e includes three engagement claws 128 at the center and in the vicinity of both ends.
  • the engagement claw 128 is provided at a position corresponding to the engagement hole 115 of the lower case 110.
  • the engagement claw 128 of the cell holder 120 is fitted into the engagement hole 115 of the lower case 110 to be engaged, whereby the cell holder 120 and the lower case 110 are engaged.
  • the positions and quantities of the engagement holes 115 and the engagement claws 128 are not limited to the examples shown in the present embodiment, and can be determined as appropriate positions and quantities.
  • the outer peripheral frame 121 is provided with an engagement hole 129a on the upper surface side of the side surfaces 121a and 121c and in the vicinity of the screw hole 123b.
  • the engagement hole 129a is provided so as to protrude outward from the outer peripheral frame 121, and is a substantially rectangular hole when viewed from above.
  • the engagement hole 129a is used when the cell holder 120 and the auxiliary machine base 200 are assembled.
  • the outer peripheral frame 121 includes an engagement hole 129b on the upper surface side near the center of each of the side surfaces 121a, 121b, 121c and 121d.
  • the engagement hole 129b is provided so as to protrude outward from the outer peripheral frame 121, and is a substantially rectangular hole in a top view.
  • the engagement hole 129b is used when the cell holder 120 and the upper case are assembled. Note that the engagement hole 129b is not necessarily provided near the center of each of the side surfaces 121a, 121b, 121c, and 121d, and may be provided at any position as long as the upper case described later can be engaged. It may be.
  • the adhesive is an arbitrary adhesive capable of bonding the battery cell 150, the lower case 110, and the cell holder 120.
  • an epoxy-based adhesive can be used.
  • the adhesive is a battery cell that contacts the bottom surface 111 when the battery cell 150 is inserted into the lower case 110 (that is, the surface opposite to the cap surface 151) and the cell holder 120 from the top surface side.
  • the cap surface 151 includes the positive electrode terminal 152, the negative electrode terminal 153, and the safety valve 154, for example, the cap surface 151 of the cap surface 151 is prevented from being coated with the positive electrode terminal 152, the negative electrode terminal 153, and the safety valve 154.
  • the adhesive may be applied only to the peripheral edge in the longitudinal direction.
  • FIG. 10 shows a surface of the battery cell 150 that contacts the bottom surface 111 when the battery cell 150 is inserted into the lower case 110 and a surface that contacts the holding lid 122 when the cell holder 120 holds the battery cell 150 from the upper surface side. It is a figure which shows typically the adhesion position when an adhesive agent is applied to (that is, cap surface 151).
  • FIG. 10 is a cross-sectional view taken along the line AA in FIG. 8 and shows only the central battery cell 150 and its periphery among the five stacked battery cells 150. Moreover, in FIG. 10, the area
  • what is applied between the battery cell 150 and the bottom surface 111 of the lower case 110 is not limited to the adhesive.
  • Another filler may be applied between the battery cell 150 and the bottom surface 111.
  • the filler is particularly preferably elastic. By applying an elastic filler between the battery cell 150 and the bottom surface 111, the filler absorbs vibration generated when the vehicle including the assembled battery 100 travels, so that vibration is hardly transmitted to the battery cell 150.
  • the cap surface 151 of the battery cell 150 is turned downward, and the battery cell 150 is inserted into the lower surface side of the holding lid 122 of the cell holder 120 according to the rib 127.
  • the lower case 110 is engaged with the cell holder 120 so as to cover the cell holder 120 into which the battery cell 150 is inserted.
  • the engagement claw 128 of the cell holder 120 is engaged with the engagement hole 115 of the lower case 110.
  • FIG. 11A and 11B An example of a state in which the cell holder 120 and the lower case 110 are engaged is shown in FIG.
  • the adhesion procedure of the battery cell 150 is not limited to the above procedure.
  • the battery cell 150 may be inserted into the space 110a of the lower case 110 without causing the lower case 110 and the cell holder 120 to be turned upside down, and the cell holder 120 may be engaged with the lower case 110 from above.
  • the inter-cell bus bar 160, the total plus terminal bus bar 164, and the total minus terminal bus bar 165 are attached to each terminal of the battery cell 150 exposed from the opening 124a of the holding lid 122 by bead welding, and the LBC 140 is attached to the holding lid 122.
  • the LBC 140 is attached to the holding lid 122 by, for example, screwing.
  • the auxiliary equipment module group electrically connects the auxiliary equipment base 200, the MOSFET 210, the relay 220, the current sensor 230 and the fusible link 240 arranged on the auxiliary equipment base 200, and each component arranged on the auxiliary equipment base 200. It is configured by assembling a copper bus bar for connection to the cable.
  • the auxiliary machine base 200 has four side surfaces 200a, 200b, 200c and 200d, and a mounting surface 201.
  • the four side surfaces 200a, 200b, 200c, and 200d are the four side surfaces 112a, 112b, 112c, and 112d (and the four side surfaces of the cell holder 120) of the lower case 110, respectively, in a state where the auxiliary machine base 200 is assembled to the battery module group. 121a, 121b, 121c and 121d).
  • a current sensor 230 is mounted near the side surface 200a
  • a MOSFET 210 is mounted near the side surface 200b
  • a relay 220 is mounted near the side surface 200c
  • a fusible link 240 is mounted near the side surface 200d.
  • unevenness is formed on the mounting surface 201 according to the position where the MOSFET 210, the relay 220, the current sensor 230 and the fusible link 240 are mounted.
  • the mounting surface 201 has higher rigidity due to the unevenness than when there is no unevenness.
  • the unevenness of the mounting surface 201 includes an area 201c on the mounting surface 201 where the relay 220 is mounted, an area 201a where the current sensor 230 is mounted, and a MOSFET 210. It is formed so as to be at a higher position when the assembled battery 100 is assembled as compared to the area 201b to be placed and the area 201d to which the fusible link 240 is placed. Further, the unevenness of the mounting surface 201 is formed so that the region 201d where the fusible link 240 is mounted is at a higher position when the assembled battery 100 is assembled than the regions 201a and 201b. Yes.
  • the unevenness of the placement surface 201 is formed such that the region 201a where the current sensor 230 is placed is at a lower position than the region 201c and the region 201d. Since the mounting surface 201 has such irregularities, the fusible link 240 is disposed at a position lower than the relay 220 in the auxiliary machine base 200, and the current sensor 230 thicker than the fusible link 240 is also connected to the relay 220. Can be arranged at a lower position.
  • the current sensor 230, the MOSFET 210, the relay 220, and the fusible link 240 are respectively formed by standing walls formed by unevenness of the mounting surface 201 or ribs 202 formed on the mounting surface 201 in the regions 201a, 201b, 201c, and 201d. Is positioned.
  • the region 201 c is partially surrounded by the rib 202. That is, the relay 220 is positioned by the rib 202.
  • the rib 202 also has a function of preventing rotation when the relay 220 is fixed to the auxiliary machine base 200 with the nut 290.
  • the rib 202 also has an insulating function for preventing contact between copper bus bars, which will be described later.
  • the MOSFET 210, the relay 220, and the fusible link 240 are positioned by standing walls formed in parts around the areas 201a, 201b, and 201d, respectively.
  • the standing wall on the mounting surface 201 also has a function of preventing rotation when the MOSFET 210, the relay 220, and the fusible link 240 are fixed to the auxiliary machine base 200 with the nut 290.
  • the auxiliary machine base 200 includes a plurality of upward studs 203 on the mounting surface 201.
  • the stud 203 is used to electrically connect the battery cells 150 of the battery module group, the MOSFET 210, the relay 220, the current sensor 230, and the fusible link 240 to each other.
  • the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 are also provided so as to extend upward from the mounting surface 201 of the auxiliary machine base 200 (direction substantially orthogonal to the mounting surface 201) and function as studs. To do. That is, since the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 are provided in the same direction, wiring for harness fastening can be easily performed.
  • the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 are all provided at the edge that contacts the same side surface (the right side surface 200a as viewed in FIG. 12), work from the same direction is possible. Wiring is easy. For this reason, it is easy to automate wiring.
  • each stud 203, SSG terminal 250, LOAD terminal 260, and GND terminal 270 are provided at an appropriate height on the mounting surface 201 having irregularities.
  • each stud 203 has a height matching the terminals of the current sensor 230, the MOSFET 210, the relay 220, and the fusible link 240 placed on each of the regions 201 a, 201 b, 201 c, and 201 d on the placement surface 201.
  • the diameter of each stud 203 is sized according to the connection opening provided in each terminal of the current sensor 230, MOSFET 210, relay 220, and fusible link 240, and the current sensor 230, MOSFET 210, relay 220.
  • the fusible link 240 is attached to the accessory base 200 by passing the stud 203 from the upper surface side to the terminal connection opening. In this way, by making the direction of each stud 203 upward like the GND terminal 270, the SSG terminal 250, and the LOAD terminal 260, it is easy to attach each component to the auxiliary machine base 200 by automation or the like and can be temporarily fixed. Therefore, the productivity of the auxiliary machine module and the assembled battery 100 is improved.
  • the auxiliary machine base 200 has a plurality of stages.
  • the GND terminal 270 is in the stage 270a
  • the SSG terminal 250 is in the stage 250a
  • the LOAD terminal 260 is in the stage. 260a.
  • a step is an area delimited by standing walls or ribs 202.
  • the GND terminal 270 is provided at a level lower than the SSG terminal 250 and the LOAD terminal 260 (at a low height).
  • FIG. 13C which is a side view when the auxiliary machine base 200 of FIG. 12 is viewed from the back side of the drawing, the height h3 of the GND terminal 270 is equal to the height h1 of the SSG terminal 250.
  • the height h2 of the LOAD terminal 260 is lower.
  • the height h3 of the GND terminal 270 may be higher than the height h1 of the SSG terminal 250 and the height h2 of the LOAD terminal 260.
  • the height h1 of the SSG terminal 250 and the height h2 of the LOAD terminal 260 may be the same or different.
  • the auxiliary machine base 200 is assembled with the cell holder 120 via a total minus copper bus bar 286 connected to the GND terminal 270 on the side opposite to the mounting surface 201 on which the GND terminal 270 is provided. Therefore, when the GND terminal 270 is provided at a level lower than the SSG terminal 250 and the LOAD terminal 260, the total minus copper bus bar 286 is shortened as compared with the case where the GND terminal 270 is provided at a level higher than the SSG terminal 250 and the LOAD terminal 260. Can do. For this reason, it is possible to prevent excessive (more than a predetermined value) stress from being applied to the total minus copper bus bar 286.
  • the wiring of each part using the copper bus bar on the auxiliary machine base 200 will be described.
  • the copper bus bars 280 to 284 have various shapes according to the positions where they are arranged along the unevenness of the mounting surface 201 of the auxiliary machine base 200.
  • the terminal 240b of the fusible link 240 is electrically connected to the terminal 230a of the current sensor 230 via the copper bus bar 280.
  • the other terminal 230 b of the current sensor 230 is electrically connected to the terminal 220 a of the relay 220 via the copper bus bar 281.
  • the other terminal 220 b of the relay 220 is electrically connected to the terminal 210 a of the MOSFET 210 via the copper bus bar 282.
  • Terminal 220 b of relay 220 is further electrically connected to SSG terminal 250 via copper bus bars 282 and 283.
  • the other terminal 210 b of the MOSFET 210 is electrically connected to the LOAD terminal 260 via the copper bus bar 284.
  • the terminal 240a of the fusible link 240 is connected to a total plus copper bus bar 285 for electrical connection to the total plus terminal bus bar 164 of the battery module group.
  • the GND terminal 270 is connected to a total minus copper bus bar 286 for electrically connecting to the total minus terminal bus bar 165 of the battery module group.
  • the total plus copper bus bar 285 and the total minus copper bus bar 286 extend to the lower surface side along the side surfaces 200b and 200d, respectively, and the tips of the total plus copper bus bar 286 and the auxiliary base 200 and the cell holder 120 are assembled to the total plus terminal, respectively. Contact with the bus bar 164 and the total negative terminal bus bar 165 ensures electrical connection.
  • the total plus copper bus bar 285 and the total minus copper bus bar 286 are respectively screw holes at positions corresponding to the screw holes 123b provided in the cell holder 120 in a state where the auxiliary machine base 200 and the cell holder 120 are assembled at the tips. 285a and 286a.
  • the copper bus bars 280 to 284 and the total plus copper bus bar 285 are fixed to the auxiliary machine base 200 together with the MOSFET 210, the relay 220, the current sensor 230 and the fusible link 240 by a nut 290 screwed to the stud 203 from the upper surface side.
  • the relay 220 can also be attached to the auxiliary machine base 200 by passing an opening 221 provided at a position different from the terminals 220a and 220b through the stud 203 and screwing the nut 290 into the stud 203 from the upper surface side. Fixed.
  • the copper bus bars are arranged so as not to contact each other by the ribs 202 provided on the auxiliary machine base 200.
  • the partition 222 provided in the terminal 220a and the terminal 220b of the relay 220 also has a function of insulating the copper bus bars so that they do not contact each other.
  • the auxiliary machine pedestal 200 includes a screw hole forming part 204 having screw holes 204a for fixing the cell holder 120 and the auxiliary machine pedestal 200 by screwing at the ends of the side surfaces 200b and 200d.
  • the screw hole 204a is provided at a position corresponding to the screw hole 123a provided in the cell holder 120 in a state where the cell holder 120 and the auxiliary machine base 200 are assembled.
  • the auxiliary machine base 200 includes engagement claws 205 in the vicinity of the stud 203 to which the total plus copper bus bar 285 on the side surface 200a is attached and in the vicinity of the GND terminal 270 to which the total minus copper bus bar 286 on the side surface 200c is attached.
  • the engagement claw 205 is provided at a position corresponding to the engagement hole 129a in a state where the cell holder 120 and the auxiliary machine base 200 are assembled.
  • the engaging claw 205 extends from the outside of the side surfaces 200a and 200c toward the lower surface, and the front end of the engaging claw 205 has a wedge shape when viewed from the side. When the tip of the engagement claw 205 is fitted into the engagement hole 129a, the engagement claw 205 and the engagement hole 129a are engaged.
  • each component ie, MOSFET 210, relay 220, current sensor 230, fusible link 240
  • copper bus bar ie, copper bus bar 280 to 284, total plus copper bus bar 285, and total minus copper.
  • the bus bar 286) is disposed through the stud 203, the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 of the mounting surface 201 of the auxiliary machine base 200.
  • the auxiliary machine module group is assembled by screwing the nut 290 into the stud 203, the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 from the upper surface side.
  • the upper case 300 has three openings 310a and 310b for exposing the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 from the upper case 300 when the assembled battery 100 is assembled. And 310c.
  • the upper case 300 includes engagement claws 320 for engaging the cell holder 120 on the lower surfaces of the four side surfaces.
  • the engagement claw 320 is provided at a position corresponding to the engagement hole 129b in a state where the cell holder 120 and the upper case 300 are assembled.
  • the engaging claw 320 extends in the lower surface direction from the outer side of each side surface, and the front end portion of the engaging claw 320 has a wedge shape in a side view.
  • the upper case 300 includes a bus bar protection unit 330 for protecting the total plus copper bus bar 285 and the total minus copper bus bar 286 in a state where the cell holder 120 and the upper case 300 are assembled.
  • the assembly of the battery module group and the accessory module group is realized by the assembly of the cell holder 120 and the accessory base 200.
  • the cell holder 120 and the auxiliary machine base 200 are assembled by fitting the engaging claws 205 into the engaging holes 129a and engaging them.
  • the cell holder 120 and the auxiliary machine pedestal 200 are configured such that, in a state where the auxiliary machine pedestal 200 is placed on the cell holder 120, the bolt 340 is screwed into the screw hole 285a or the screw hole 286a from the outside of the side surfaces 200b and 200d. It is assembled by passing through the hole 166a and screwed into the screw hole 123b. That is, the cell holder 120 and the auxiliary machine base 200 are indirectly assembled by the bolt 340 via the total plus copper bus bar 285 and the total minus copper bus bar 286. At this time, the support portion 206 provided along the total plus copper bus bar 285 and the total minus copper bus bar 286 has a function of preventing rotation.
  • the cell holder 120 and the auxiliary machine base 200 are formed so that, in the state where the cell holder 120 is placed on the auxiliary machine base 200, the bolt 350 is inserted through the screw hole 204a from the upper surface side as shown in FIG. It is assembled by screwing to 123a.
  • the battery module group and the auxiliary machine module group of the present embodiment are assembled as described above, the battery module group and the auxiliary machine module group are fixed at the four corners of the substantially rectangular auxiliary machine base 200 in a top view. . Thereby, a robust assembly can be realized.
  • the upper case 300 is engaged with the cell holder 120 by engaging the engagement claw 320 with the engagement hole 129 b of the cell holder 120.
  • the assembly of the assembled battery 100 is completed by engaging the upper case 300 with the cell holder 120.
  • the GND terminal 270 is provided in a different stage from the SSG terminal 250 and the LOAD terminal 260. For this reason, the distinguishability of the GND terminal 270 increases, and it becomes easy to prevent erroneous wiring when the assembled battery 100 is mounted on a vehicle.
  • the GND terminal 270 is provided at a lower level than the SSG terminal 250 and the LOAD terminal 260. For this reason, the total minus copper bus bar 286 can be shortened as compared with the case where the GND terminal 270 is provided at a stage higher than the SSG terminal 250 and the LOAD terminal 260, and the total minus copper bus bar 286 is excessive (over a predetermined value or more). ) Stress can be prevented.
  • the GND terminal 270, the SSG terminal 250, and the LOAD terminal 260 are provided at the edge that contacts the same side surface. For this reason, work from the same direction is possible, and wiring is easy. Also, wiring is easy to automate.
  • the GND terminal 270, the SSG terminal 250, and the LOAD terminal 260 are provided upward from the mounting surface of the auxiliary machine base 200. For this reason, the wiring for harness fastening can be performed easily.
  • auxiliary machine base 200 according to the embodiment of the present invention, a plurality of components are also provided upward from the placement surface 201. For this reason, it is easy to attach each part to the auxiliary machine base 200 by automation or the like, and temporary fixing is also possible, so that the productivity of the auxiliary machine module and the assembled battery 100 is improved.

Abstract

The present invention prevents miswiring. An assembled battery (100) that has: a pedestal (200) that has a plurality of steps (250a, 260a, 270a) to which a plurality of components (210, 220, 230, 240) are attached; and at least one battery cell (150). The pedestal (200) has: a first terminal (250) that is between the at least one battery cell (150) and an alternator (410); a second terminal (260) that is between the at least one battery cell (150) and a load (440); and a third terminal (270) that is used for grounding. The third terminal is provided on a different step from the first terminal and the second terminal.

Description

組電池Assembled battery 関連出願へのクロスリファレンスCross-reference to related applications
　本出願は、日本国特許出願２０１６－００８１４６号（２０１６年１月１９日出願）の優先権を主張するものであり、当該出願の開示全体を、ここに参照のために取り込む。 This application claims the priority of Japanese Patent Application No. 2016-008146 (filed on Jan. 19, 2016), the entire disclosure of which is incorporated herein by reference.
　本発明は、組電池に関する。 The present invention relates to an assembled battery.
　従来、複数の電池を筐体等の部材に収容した組電池が知られている。例えば、特許文献１には、複数のリチウムイオンセルをフレーム部材に配置することにより構成した組電池が開示されている。 Conventionally, an assembled battery in which a plurality of batteries are housed in a member such as a casing is known. For example, Patent Document 1 discloses an assembled battery configured by arranging a plurality of lithium ion cells on a frame member.
特表２０１４－５０４４４０号公報Special table 2014-504440 gazette
　しかしながら、特許文献１に開示された組電池では、複数の端子６２０が同じ高さの位置に設けられる（図１２参照）。しかしながら、複数の端子が同じ高さの位置に設けられている場合、それらが区別されないために配線が誤って行われるおそれがある。 However, in the assembled battery disclosed in Patent Document 1, a plurality of terminals 620 are provided at the same height (see FIG. 12). However, when a plurality of terminals are provided at the same height, they are not distinguished from each other, so that there is a possibility that wiring is performed erroneously.
　かかる観点に鑑みてなされた本発明の目的は、誤配線を防止することができる組電池を提供することにある。 An object of the present invention made in view of such a viewpoint is to provide an assembled battery capable of preventing erroneous wiring.
　上記課題を解決するために、第１の観点に係る組電池は、
　複数の部品が取り付けられ複数の段を有する台座と、１以上の電池セルとを有し、
　前記台座は前記１以上の電池セルとオルタネータとの間の第１端子と、前記１以上の電池セルと負荷との間の第２端子と、接地のために使用される第３端子とを有し、
　前記第３端子は、前記第１端子及び前記第２端子と異なる段に設けられる。 In order to solve the above problem, the assembled battery according to the first aspect is:
A pedestal having a plurality of steps to which a plurality of components are attached, and one or more battery cells,
The pedestal has a first terminal between the one or more battery cells and an alternator, a second terminal between the one or more battery cells and a load, and a third terminal used for grounding. And
The third terminal is provided in a different stage from the first terminal and the second terminal.
　また、第２の観点に係る組電池は、
　前記組電池はさらに、前記１以上の電池セルを保持するセルホルダを有し、
　前記台座は、前記第３端子が設けられる載置面とは反対側で、前記第３端子に接続された総マイナスバスバを介してセルホルダと組み付けられ、
　前記第３端子は、前記第１端子及び前記第２端子よりも低い段に設けられることが好ましい。 The assembled battery according to the second aspect is
The assembled battery further includes a cell holder that holds the one or more battery cells,
The pedestal is assembled with the cell holder via a total minus bus bar connected to the third terminal on the side opposite to the mounting surface on which the third terminal is provided,
The third terminal is preferably provided at a lower level than the first terminal and the second terminal.
　また、第３の観点に係る組電池は、
　前記第３端子と前記第１端子と前記第２端子とは、同一側面に接する縁部に設けられることが好ましい。 An assembled battery according to the third aspect is
It is preferable that the third terminal, the first terminal, and the second terminal are provided at an edge portion in contact with the same side surface.
　また、第４の観点に係る組電池は、
　前記第３端子と前記第１端子と前記第２端子とは、前記台座の載置面から上向きに設けられることが好ましい。 The assembled battery according to the fourth aspect is
The third terminal, the first terminal, and the second terminal are preferably provided upward from the mounting surface of the pedestal.
　また、第５の観点に係る組電池は、
　前記複数の部品も前記載置面から上向きに設けられることが好ましい。 An assembled battery according to the fifth aspect is
It is preferable that the plurality of components are also provided upward from the placement surface.
　第１の観点に係る組電池によれば、誤配線を防止することができる。 According to the assembled battery according to the first aspect, erroneous wiring can be prevented.
　また、第２の観点に係る組電池によれば、総マイナスバスバに過剰な（所定値以上の）応力が掛かることを防ぐことができる。 Moreover, according to the assembled battery according to the second aspect, it is possible to prevent an excessive stress (above a predetermined value) from being applied to the total minus bus bar.
　また、第３の観点に係る組電池によれば、配線が容易である。 Moreover, according to the assembled battery according to the third aspect, wiring is easy.
　また、第４の観点に係る組電池によれば、ハーネス締結のための配線を容易に行うことができる。 Moreover, according to the assembled battery according to the fourth aspect, wiring for fastening the harness can be easily performed.
　また、第５の観点に係る組電池によれば、補機モジュール及び組電池の生産性が向上する。 Further, according to the assembled battery according to the fifth aspect, the productivity of the auxiliary module and the assembled battery is improved.
本発明の一実施形態に係る組電池の外観斜視図である。It is an external appearance perspective view of the assembled battery which concerns on one Embodiment of this invention. 図１に示す組電池を含む電源システムの概略を示す機能ブロック図である。It is a functional block diagram which shows the outline of the power supply system containing the assembled battery shown in FIG. 図１の組電池の下部ケース及びセルホルダを透明な状態で示す組電池の外観斜視図である。It is an external appearance perspective view of the assembled battery which shows the lower case and cell holder of the assembled battery of FIG. 1 in a transparent state. 図１の組電池の分解斜視図である。It is a disassembled perspective view of the assembled battery of FIG. 図１の下部ケースの外観斜視図である。It is an external appearance perspective view of the lower case of FIG. 図５の下部ケースの上面図である。FIG. 6 is a top view of the lower case of FIG. 5. 図１のセルホルダの外観斜視図である。It is an external appearance perspective view of the cell holder of FIG. 図５の下部ケースに図７のセルホルダを取り付けた状態を示す外観斜視図である。It is an external appearance perspective view which shows the state which attached the cell holder of FIG. 7 to the lower case of FIG. セルホルダに取り付けられたセル間バスバの拡大外観斜視図である。It is an expansion appearance perspective view of a bus bar between cells attached to a cell holder. 図１の組電池における電池セルと下部ケース及びセルホルダとの接着位置を模式的に示す図である。It is a figure which shows typically the adhesion position of the battery cell in the assembled battery of FIG. 1, a lower case, and a cell holder. セルホルダの係合爪と下部ケースの係合孔との係合前後の状態を模式的に示す図である。It is a figure which shows typically the state before and behind the engagement nail | claw of a cell holder and the engagement hole of a lower case. 図１の補機台座の外観斜視図である。It is an external appearance perspective view of the auxiliary machine base of FIG. 図１の補機台座を一側面から見た場合の側面図である。It is a side view at the time of seeing the auxiliary machine base of FIG. 1 from one side. 各部品及びバスバを取り付けた状態を示す補機台座の外観斜視図である。It is an external appearance perspective view of the auxiliary machine base which shows the state which attached each component and the bus bar. 各部品及びバスバをナットで固定した状態を示す補機台座の上面図である。It is a top view of the auxiliary machine base which shows the state which fixed each component and the bus bar with the nut. 組電池全体の組立の様子を示す図である。It is a figure which shows the mode of the assembly of the whole assembled battery. 電池モジュール群と補機モジュール群との組付けの様子を説明するための図である。It is a figure for demonstrating the mode of an assembly | attachment of a battery module group and an auxiliary machine module group.
　以下、本発明の実施形態について、図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図１は、本発明の一実施形態に係る組電池の外観斜視図であり、組電池の上部ケースを外した状態を示す外観斜視図である。ただし、図１では、各部品の描写について一部簡略化して示している。各部品の詳細については、図５乃至図１５を参照されたい。組電池１００は、電池セルを収容する下部ケース１１０と、下部ケース１１０に収容された電池セルを上部ケースが取り付けられる側（以下、「上面側」ともいう）において保持するセルホルダ１２０と、セルホルダ１２０の上面側に取り付けられた補機台座２００と、補機台座２００に取り付けられた各種部品と、各種部品を保護するための図１には図示していない上部ケースとを備える。なお、補機台座２００は本発明の台座に対応する。 FIG. 1 is an external perspective view of an assembled battery according to an embodiment of the present invention, and is an external perspective view showing a state where an upper case of the assembled battery is removed. However, in FIG. 1, the depiction of each part is shown in a simplified manner. Refer to FIGS. 5 to 15 for details of each component. The assembled battery 100 includes a lower case 110 that houses battery cells, a cell holder 120 that holds battery cells housed in the lower case 110 on a side to which the upper case is attached (hereinafter also referred to as “upper surface side”), and a cell holder 120. 1 is provided with an auxiliary machine base 200 attached to the upper surface side, various parts attached to the auxiliary machine base 200, and an upper case (not shown in FIG. 1) for protecting the various parts. The auxiliary machine base 200 corresponds to the base of the present invention.
　本実施形態において、組電池１００は、補機台座２００に取り付けられる各種部品として、ＭＯＳＦＥＴ（metal oxide semiconductor field effect transistor）２１０と、リレー２２０と、電流センサ２３０と、ヒュージブルリンク２４０とを備える。また、組電池１００は、上部ケースを取り付けた状態において上部ケースの外部に突出するＳＳＧ(Side Start Generator)端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０の３つの端子を備える。なお、ＳＳＧ端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０はそれぞれ本発明の第１端子、第２端子及び第３端子に対応する。 In the present embodiment, the assembled battery 100 includes a MOSFET (metal oxide semiconductor field effector transistor) 210, a relay 220, a current sensor 230, and a fusible link 240 as various components attached to the auxiliary machine base 200. In addition, the assembled battery 100 includes three terminals, that is, an SSG (Side Start) Generator) terminal 250, a LOAD terminal 260, and a GND terminal 270 that protrude outside the upper case when the upper case is attached. Note that the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 correspond to the first terminal, the second terminal, and the third terminal of the present invention, respectively.
　本実施形態において、組電池１００は、内燃機関を備えた車両、又は内燃機関と電動機との双方の動力で走行可能なハイブリッド車両等の車両に搭載されて使用されるものとして説明するが、組電池１００の用途は車両用に限られない。 In the present embodiment, the assembled battery 100 will be described as being used by being mounted on a vehicle such as a vehicle equipped with an internal combustion engine or a hybrid vehicle capable of traveling with the power of both the internal combustion engine and the electric motor. The use of the battery 100 is not limited to the vehicle.
　図２は、図１に示す組電池１００を含む電源システムの概略を示す機能ブロック図である。電源システム４００は、組電池１００と、オルタネータ４１０と、スタータ４２０と、第２の二次電池４３０と、負荷４４０と、スイッチ４５０と、制御部４６０とを備える。組電池１００は、下部ケース１１０に収容される第１の二次電池１３０を含む。第１の二次電池１３０、オルタネータ４１０、スタータ４２０、第２の二次電池４３０及び負荷４４０は、並列に接続される。 FIG. 2 is a functional block diagram showing an outline of a power supply system including the assembled battery 100 shown in FIG. The power supply system 400 includes an assembled battery 100, an alternator 410, a starter 420, a second secondary battery 430, a load 440, a switch 450, and a control unit 460. The assembled battery 100 includes a first secondary battery 130 housed in the lower case 110. The first secondary battery 130, the alternator 410, the starter 420, the second secondary battery 430, and the load 440 are connected in parallel.
　組電池１００は、ＭＯＳＦＥＴ２１０と、リレー２２０と、電流センサ２３０と、ヒュージブルリンク２４０と、第１の二次電池１３０と、バッテリコントローラ（ＬＢＣ）１４０とを備える。リレー２２０と、電流センサ２３０と、ヒュージブルリンク２４０と、第１の二次電池１３０とは、この順で直列に接続される。また、ＭＯＳＦＥＴ２１０は、第２の二次電池４３０及び負荷４４０に直列に接続される。 The assembled battery 100 includes a MOSFET 210, a relay 220, a current sensor 230, a fusible link 240, a first secondary battery 130, and a battery controller (LBC) 140. Relay 220, current sensor 230, fusible link 240, and first secondary battery 130 are connected in series in this order. MOSFET 210 is connected in series to second secondary battery 430 and load 440.
　組電池１００において、ＳＳＧ端子２５０は電池セル１５０とオルタネータ４１０との間にあり、オルタネータ４１０に接続される。ＬＯＡＤ端子２６０は電池セル１５０と負荷４４０との間にあり、負荷４４０に接続される。ＳＳＧ端子２５０は、本実施形態のようにスタータ４２０とオルタネータ４１０とに別々に接続されてもよいし、代替例としてスタータ４２０とオルタネータ４１０との統合型モータに接続されてもよい。また、ＧＮＤ端子２７０は、接地のために使用される。 In the assembled battery 100, the SSG terminal 250 is between the battery cell 150 and the alternator 410 and is connected to the alternator 410. The LOAD terminal 260 is between the battery cell 150 and the load 440 and is connected to the load 440. The SSG terminal 250 may be separately connected to the starter 420 and the alternator 410 as in the present embodiment, or may be connected to an integrated motor of the starter 420 and the alternator 410 as an alternative example. The GND terminal 270 is used for grounding.
　リレー２２０は、第１の二次電池１３０を、電源システム４００における組電池１００外の各構成要素と並列に接続し又は切り離すスイッチとして機能する。 The relay 220 functions as a switch that connects or disconnects the first secondary battery 130 in parallel with each component outside the assembled battery 100 in the power supply system 400.
　電流センサ２３０は、適宜な構造を有し、適宜な方式で第１の二次電池１３０を含む回路に流れる電流を測定する。 The current sensor 230 has an appropriate structure and measures the current flowing through the circuit including the first secondary battery 130 by an appropriate method.
　ヒュージブルリンク２４０は、ヒューズ本体と、ヒューズ本体を収容保持する絶縁樹脂製のハウジングと、ハウジングを覆う絶縁樹脂製のカバーとにより構成され、過電流が生じた場合に溶断する。 The fusible link 240 includes a fuse body, a housing made of an insulating resin that accommodates and holds the fuse body, and a cover made of an insulating resin that covers the housing, and is blown when an overcurrent occurs.
　第１の二次電池１３０は、図３に下部ケース１１０及びセルホルダ１２０を透明な状態で示すように、下部ケース１１０に収容される電池セル１５０のアセンブリにより構成される。第１の二次電池１３０を構成する各電池セル１５０は、例えばリチウムイオン電池又はニッケル水素電池等の二次電池である。第１の二次電池１３０は、正極側がヒュージブルリンク２４０に接続され、負極側がＧＮＤ端子２７０を介して接地される。 The first secondary battery 130 is constituted by an assembly of battery cells 150 accommodated in the lower case 110 as shown in FIG. 3 in which the lower case 110 and the cell holder 120 are transparent. Each battery cell 150 constituting the first secondary battery 130 is a secondary battery such as a lithium ion battery or a nickel metal hydride battery. The first secondary battery 130 has a positive electrode side connected to the fusible link 240 and a negative electrode side grounded via a GND terminal 270.
　ＭＯＳＦＥＴ２１０は、第２の二次電池４３０及び負荷４４０を、電源システム４００における他の構成要素と並列に接続し又は切り離すスイッチとして機能する。 The MOSFET 210 functions as a switch that connects or disconnects the second secondary battery 430 and the load 440 in parallel with other components in the power supply system 400.
　ＬＢＣ１４０は、第１の二次電池１３０に接続され、第１の二次電池１３０の状態を推定する。ＬＢＣ１４０は、例えば第１の二次電池１３０の充電状態（ＳＯＣ：state of charge）等を推定する。 The LBC 140 is connected to the first secondary battery 130 and estimates the state of the first secondary battery 130. For example, the LBC 140 estimates a state of charge (SOC) of the first secondary battery 130 and the like.
　オルタネータ４１０は、発電機であって、車両のエンジンに機械的に接続される。オルタネータ４１０は、エンジンの駆動によって発電を行う。オルタネータ４１０がエンジンの駆動によって発電した電力は、レギュレータで出力電圧を調整されて、組電池１００が備える第１の二次電池１３０、第２の二次電池４３０、及び負荷４４０に供給され得る。またオルタネータ４１０は、車両の減速時等に回生によって発電可能である。オルタネータ４１０が回生発電した電力は、第１の二次電池１３０及び第２の二次電池４３０の充電に使用される。 The alternator 410 is a generator and is mechanically connected to the vehicle engine. Alternator 410 generates power by driving the engine. The electric power generated by the alternator 410 by driving the engine can be supplied to the first secondary battery 130, the second secondary battery 430, and the load 440 included in the assembled battery 100 with the output voltage adjusted by a regulator. The alternator 410 can generate power by regeneration when the vehicle is decelerated. The electric power regenerated by the alternator 410 is used to charge the first secondary battery 130 and the second secondary battery 430.
　スタータ４２０は、例えばセルモータを含んで構成され、第１の二次電池１３０及び第２の二次電池４３０の少なくとも一方からの電力供給を受けて、車両のエンジンを始動させる。 The starter 420 is configured to include a cell motor, for example, and receives power supply from at least one of the first secondary battery 130 and the second secondary battery 430 to start the engine of the vehicle.
　第２の二次電池４３０は、例えば鉛蓄電池により構成され、負荷４４０に電力を供給する。 The second secondary battery 430 is composed of, for example, a lead storage battery and supplies power to the load 440.
　負荷４４０は、例えば車両に備えられたオーディオ、エアコンディショナ、及びナビゲーションシステム等を含み、供給された電力を消費して動作する。負荷４４０は、エンジン駆動の停止中に第１の二次電池１３０から電力供給を受けて動作し、エンジン駆動中にオルタネータ４１０及び第２の二次電池４３０から電力供給を受けて動作する。 The load 440 includes, for example, an audio, an air conditioner, and a navigation system provided in the vehicle, and operates by consuming the supplied power. The load 440 operates by receiving power supply from the first secondary battery 130 while the engine driving is stopped, and operates by receiving power supply from the alternator 410 and the second secondary battery 430 while driving the engine.
　スイッチ４５０は、スタータ４２０と直列に接続される。スイッチ４５０は、スタータ４２０を他の構成要素と並列に接続し又は切り離す。 The switch 450 is connected in series with the starter 420. The switch 450 connects or disconnects the starter 420 in parallel with other components.
　制御部４６０は、電源システム４００の全体の動作を制御する。制御部４６０は、例えば車両のＥＣＵ（Electric Control Unit又はEngine Control Unit）により構成される。制御部４６０は、スイッチ４５０、ＭＯＳＦＥＴ２１０及びリレー２２０の動作をそれぞれ制御して、オルタネータ４１０、第１の二次電池１３０及び第２の二次電池４３０による電力供給、並びに第１の二次電池１３０及び第２の二次電池４３０の充電を行なう。 The control unit 460 controls the overall operation of the power supply system 400. The control unit 460 is configured by, for example, an ECU (Electric Control Unit or Engine Control Unit) of the vehicle. The control unit 460 controls the operation of the switch 450, the MOSFET 210, and the relay 220, respectively, and supplies power by the alternator 410, the first secondary battery 130, and the second secondary battery 430, and the first secondary battery 130. The second secondary battery 430 is charged.
　次に、組電池１００の詳細な構成について、図４乃至図１７を参照して説明する。図４は、図１の組電池の分解斜視図である。ただし、図４では、図１と同様に、各部品の描写を一部簡略化している。図５は、下部ケース１１０の外観斜視図であり、図６は、下部ケース１１０の上面図である。また、図７は、セルホルダ１２０の外観斜視図である。図７（ａ）は、セルホルダ１２０の上面側からの外観斜視図であり、図７（ｂ）は、セルホルダ１２０の上面側と反対側（以下、「下面側」ともいう）からの外観斜視図である。図８は、下部ケース１１０にセルホルダ１２０を取り付けた状態を示す外観斜視図である。図９は、セルホルダ１２０に取り付けられたセル間バスバ１６０の拡大外観斜視図である。図１０は、組電池１００における電池セル１５０と下部ケース１１０及びセルホルダ１２０との接着位置を模式的に示す図である。図１１は、セルホルダ１２０の係合爪１２８と下部ケース１１０の係合孔１１５との係合前後の状態を模式的に示す図である。図１２は、補機台座２００の外観斜視図であり、図１３は、補機台座２００を一側面から見た場合の側面図である。図１３（ａ）は、補機台座２００のみの側面図であり、図１３（ｂ）は、補機台在２００に、リレー２２０等の各部品を載置した状態の側面図であり、図１３（ｃ）は補機台座２００を別の一側面から見た場合の側面図である。図１４は、各部品及びバスバを取り付けた状態を示す補機台座２００の外観斜視図である。図１５は、各部品及びバスバをナット２９０で固定した状態を示す補機台座２００の上面図である。図１６は、組電池全体の組立の様子を示す図であり、図１７は、電池モジュール群と補機モジュール群との組付けの様子を説明するための図である。 Next, a detailed configuration of the assembled battery 100 will be described with reference to FIGS. 4 is an exploded perspective view of the battery pack of FIG. However, in FIG. 4, as in FIG. 1, some parts are simplified. FIG. 5 is an external perspective view of the lower case 110, and FIG. 6 is a top view of the lower case 110. FIG. 7 is an external perspective view of the cell holder 120. 7A is an external perspective view from the upper surface side of the cell holder 120, and FIG. 7B is an external perspective view from the opposite side (hereinafter also referred to as “lower surface side”) of the cell holder 120. It is. FIG. 8 is an external perspective view showing a state where the cell holder 120 is attached to the lower case 110. FIG. 9 is an enlarged external perspective view of the inter-cell bus bar 160 attached to the cell holder 120. FIG. 10 is a diagram schematically illustrating the bonding positions of the battery cell 150, the lower case 110, and the cell holder 120 in the assembled battery 100. FIG. 11 is a diagram schematically showing a state before and after the engagement claw 128 of the cell holder 120 and the engagement hole 115 of the lower case 110 are engaged. FIG. 12 is an external perspective view of the auxiliary machine pedestal 200, and FIG. 13 is a side view of the auxiliary machine pedestal 200 viewed from one side. FIG. 13A is a side view of the auxiliary machine base 200 only, and FIG. 13B is a side view of the auxiliary machine base 200 with components such as the relay 220 mounted thereon. 13 (c) is a side view when the auxiliary machine base 200 is viewed from another side surface. FIG. 14 is an external perspective view of the auxiliary machine base 200 showing a state in which the components and the bus bar are attached. FIG. 15 is a top view of the auxiliary machine base 200 showing a state in which the components and the bus bar are fixed by the nut 290. FIG. 16 is a diagram illustrating a state of assembly of the entire assembled battery, and FIG. 17 is a diagram for illustrating a state of assembly of the battery module group and the accessory module group.
　本実施形態に係る組電池１００は、電池モジュール群と、補機モジュール群とを組み立てた後、電池モジュール群と補機モジュール群とを組付け、上部ケースを固定することにより組み立てられる。すなわち、電池モジュール群と補機モジュール群とを別々に組み立てることができるため、組付けタクト及び組付けロスを低減することができる。 The assembled battery 100 according to the present embodiment is assembled by assembling the battery module group and the accessory module group, then assembling the battery module group and the accessory module group, and fixing the upper case. That is, since the battery module group and the accessory module group can be assembled separately, assembly tact and assembly loss can be reduced.
　電池モジュール群は、電池セル１５０と、電池セル１５０を収容する下部ケース１１０と、電池セル１５０を保持するセルホルダ１２０と、セル間バスバ１６０と、総プラス端子バスバ１６４と、総マイナス端子バスバ１６５と、ＬＢＣ１４０とを組み付けることにより構成される。 The battery module group includes a battery cell 150, a lower case 110 that houses the battery cell 150, a cell holder 120 that holds the battery cell 150, an inter-cell bus bar 160, a total positive terminal bus bar 164, and a total negative terminal bus bar 165. , And LBC 140 are assembled.
　本実施形態において、組電池１００が備える電池セル１５０は、略直方体形状である。本実施形態の組電池１００は、電池セル１５０を５つ収容するが、組電池１００が収容可能な電池セル１５０の数量は５つに限られない。組電池１００が収容可能な電池セル１５０の数量は、電池セル１５０の最大出力及び車両等の被駆動機器が消費する電力等に応じて、適宜決定される。 In the present embodiment, the battery cell 150 included in the assembled battery 100 has a substantially rectangular parallelepiped shape. Although the assembled battery 100 of this embodiment accommodates five battery cells 150, the number of battery cells 150 that can be accommodated by the assembled battery 100 is not limited to five. The number of battery cells 150 that can be accommodated in the assembled battery 100 is appropriately determined according to the maximum output of the battery cells 150 and the power consumed by a driven device such as a vehicle.
　下部ケース１１０は、図５に示すように、上面側から電池セル１５０を収容可能な空間１１０ａを有する筐体である。つまり、下部ケース１１０は、底面１１１と、４つの側面１１２ａ、１１２ｂ、１１２ｃ及び１１２ｄとを有し、底面１１１の反対側（つまり上面側）に開口１１３を有する。下部ケース１１０において、側面１１２ａと１１２ｃとが対向し、側面１１２ｂと１１２ｄとが対向する。以下、４つの側面１１２ａ、１１２ｂ、１１２ｃ及び１１２ｄを区別しない場合には、まとめて側面１１２と記載する。側面１１２の高さは、下部ケース１１０に収容する電池セル１５０の高さよりも低くなっている。 As shown in FIG. 5, the lower case 110 is a housing having a space 110a that can accommodate the battery cells 150 from the upper surface side. That is, the lower case 110 has a bottom surface 111 and four side surfaces 112a, 112b, 112c, and 112d, and an opening 113 on the opposite side (that is, the top surface side) of the bottom surface 111. In the lower case 110, the side surfaces 112a and 112c face each other, and the side surfaces 112b and 112d face each other. Hereinafter, when the four side surfaces 112a, 112b, 112c, and 112d are not distinguished, they are collectively referred to as the side surface 112. The height of the side surface 112 is lower than the height of the battery cell 150 accommodated in the lower case 110.
　側面１１２ｂ及び１１２ｄは、下部ケース１１０の外側（つまり空間１１０ａの反対側）に、組電池１００を車両に取り付けるための取付機構１１４を備える。取付機構１１４は、車両との取付方法に応じて、適宜、形状と、側面１１２ｂ及び１１２ｄ上における位置とが決定される。 The side surfaces 112b and 112d include an attachment mechanism 114 for attaching the assembled battery 100 to the vehicle on the outside of the lower case 110 (that is, on the opposite side of the space 110a). The attachment mechanism 114 is appropriately determined in shape and position on the side surfaces 112b and 112d in accordance with the attachment method with the vehicle.
　また、側面１１２は、開口１１３側に、セルホルダ１２０との係合用の係合孔１１５を有する。本実施形態において、各側面１１２は、開口１１３側の中央及び両端近傍に、３つの係合孔１１５を有する。 The side surface 112 has an engagement hole 115 for engagement with the cell holder 120 on the opening 113 side. In the present embodiment, each side surface 112 has three engagement holes 115 in the center on the opening 113 side and in the vicinity of both ends.
　底面１１１は、下部ケース１１０の内側（つまり空間１１０ａ側）に、収容する電池セル１５０の位置を示すとともに収容した電池セル１５０の位置ずれを防止するためのガイド１１６を備える。ガイド１１６は、電池セル１５０同士の空間を維持する機能も有する。なお、ガイド１１６により形成される電池セル１５０間の空間には、例えば絶縁シート等が挿入されていてもよい。 The bottom surface 111 is provided with a guide 116 on the inner side of the lower case 110 (that is, on the space 110a side) for indicating the position of the battery cell 150 to be accommodated and preventing displacement of the battery cell 150 accommodated. The guide 116 also has a function of maintaining the space between the battery cells 150. For example, an insulating sheet or the like may be inserted in the space between the battery cells 150 formed by the guide 116.
　ガイド１１６の高さは、側面１１２の高さよりも低くなっている。本実施形態において、ガイド１１６は、側面１１２ｂ及び１１２ｄに平行に、等間隔に４つ設けられる。すなわち、本実施形態において、下部ケース１１０は、ガイド１１６により５つに区切られた底面１１１の各領域に沿って、側面１１２ｂから側面１１２ｄまで積層するように配置された５つの電池セル１５０を収容する。 The height of the guide 116 is lower than the height of the side surface 112. In the present embodiment, four guides 116 are provided at equal intervals in parallel to the side surfaces 112b and 112d. That is, in the present embodiment, the lower case 110 accommodates five battery cells 150 arranged so as to be stacked from the side surface 112b to the side surface 112d along each region of the bottom surface 111 divided into five by the guide 116. To do.
　一般に、下部ケース１１０の製造において、取付機構１１４を備える側面１１２ｂ及び１１２ｄよりも、取付機構１１４を備えない側面１１２ａ及び１１２ｃの方が、寸法誤差が生じにくい。そのため、本実施形態のように、電池セル１５０を側面１１２ａ及び１１２ｃの方向に沿って積層するように配置することにより、下部ケース１１０に収容された電池セル１５０は、下部ケース１１０内において積層方向にずれにくくなる。 In general, in manufacturing the lower case 110, the side surfaces 112a and 112c that do not include the mounting mechanism 114 are less likely to cause dimensional errors than the side surfaces 112b and 112d that include the mounting mechanism 114. Therefore, the battery cells 150 accommodated in the lower case 110 are stacked in the lower case 110 by arranging the battery cells 150 so as to be stacked in the direction of the side surfaces 112a and 112c as in the present embodiment. It becomes difficult to slip.
　なお、ガイド１１６の位置及び大きさ等は、下部ケース１１０が収容する電池セル１５０の形状及び数量等に応じて、適宜決定される。 Note that the position, size, and the like of the guide 116 are appropriately determined according to the shape, quantity, and the like of the battery cell 150 accommodated in the lower case 110.
　電池セル１５０は、略直方体形状の１つのキャップ面１５１上に、正極端子１５２と、負極端子１５３とを有する。キャップ面１５１は、長辺と短辺とを有する長方形状であり、正極端子１５２及び負極端子１５３は、キャップ面１５１の長辺方向の両端付近に設けられている。また、キャップ面１５１の中央には、経年劣化や熱暴走等によって電池セル１５０内部でガスが発生し電池セル１５０内部の圧力が所定以上になった場合にガスを外部に排出するために開く安全弁１５４が設けられている。電池セル１５０は、キャップ面１５１が開口１１３から突出するように、つまり上面側となるように、下部ケース１１０に収容される。図４に示すように、下部ケース１１０内において、電池セル１５０は、互いに隣接する電池セル１５０の正極端子１５２と負極端子１５３との配置が逆方向となるように、下部ケース１１０内に収容される。 The battery cell 150 has a positive electrode terminal 152 and a negative electrode terminal 153 on one cap surface 151 having a substantially rectangular parallelepiped shape. The cap surface 151 has a rectangular shape having a long side and a short side, and the positive electrode terminal 152 and the negative electrode terminal 153 are provided near both ends of the cap surface 151 in the long side direction. In addition, a safety valve that is opened at the center of the cap surface 151 to discharge gas to the outside when gas is generated inside the battery cell 150 due to aging, thermal runaway, or the like and the pressure inside the battery cell 150 exceeds a predetermined value. 154 is provided. The battery cell 150 is accommodated in the lower case 110 so that the cap surface 151 protrudes from the opening 113, that is, on the upper surface side. As shown in FIG. 4, in the lower case 110, the battery cell 150 is accommodated in the lower case 110 such that the arrangement of the positive electrode terminal 152 and the negative electrode terminal 153 of the battery cells 150 adjacent to each other is reversed. The
　電池セル１５０のキャップ面１５１側、つまり下部ケース１１０の開口１１３側には、セルホルダ１２０が取り付けられる。 The cell holder 120 is attached to the cap surface 151 side of the battery cell 150, that is, the opening 113 side of the lower case 110.
　セルホルダ１２０は、上面視において略長方形で、所定の高さを有する外周枠１２１と、外周枠１２１の内側において、セルホルダ１２０が下部ケース１１０に係合した状態で電池セル１５０を上面側から保持する保持蓋１２２とを備える。保持蓋１２２は、下部ケース１１０に収容された電池セル１５０のキャップ面１５１を上面側から保持する。 The cell holder 120 is substantially rectangular in a top view, and holds the battery cell 150 from the upper surface side in a state where the cell holder 120 is engaged with the lower case 110 inside the outer peripheral frame 121 having a predetermined height and inside the outer peripheral frame 121. And a holding lid 122. The holding lid 122 holds the cap surface 151 of the battery cell 150 accommodated in the lower case 110 from the upper surface side.
　外周枠１２１は、４つの側面１２１ａ、１２１ｂ、１２１ｃ及び１２１ｄを有する。４つの側面１２１ａ、１２１ｂ、１２１ｃ及び１２１ｄは、外周枠１２１と下部ケース１１０とが係合された状態において、それぞれ下部ケース１１０の４つの側面１１２ａ、１１２ｂ、１１２ｃ及び１１２ｄに対応する位置に配置される。 The outer peripheral frame 121 has four side surfaces 121a, 121b, 121c and 121d. The four side surfaces 121a, 121b, 121c and 121d are arranged at positions corresponding to the four side surfaces 112a, 112b, 112c and 112d of the lower case 110, respectively, in a state where the outer peripheral frame 121 and the lower case 110 are engaged. The
　外周枠１２１は、側面１２１ｂ及び１２１ｄの端部に、補機台座２００をねじ留めによりセルホルダ１２０に固定するためのねじ穴１２３ａを有するねじ穴形成部１２３を備える。外周枠１２１は、側面１２１ｂ及び１２１ｄから外側に突出するように形成されている。ねじ穴形成部１２３において、ねじ穴１２３ａは、上面側からねじを挿入できるように形成されている。 The outer peripheral frame 121 includes screw hole forming portions 123 having screw holes 123a for fixing the accessory base 200 to the cell holder 120 by screwing at the ends of the side surfaces 121b and 121d. The outer peripheral frame 121 is formed so as to protrude outward from the side surfaces 121b and 121d. In the screw hole forming portion 123, the screw hole 123a is formed so that a screw can be inserted from the upper surface side.
　また、外周枠１２１は、側面１２１ｂ及び１２１ｄの上面側に、補機台座２００に取り付けたバスバ（つまり、後述する総プラス銅バスバ２８５及び総マイナス銅バスバ２８６）をセルホルダ１２０にねじ留めするためのねじ穴１２３ｂを有する。ねじ穴１２３ｂは、後述する総プラス端子バスバ１６４及び総マイナス端子バスバ１６５が取り付けられる開口１２４ａの近傍に設けられることが好ましい。 In addition, the outer peripheral frame 121 is used for screwing bus bars (that is, total plus copper bus bars 285 and total minus copper bus bars 286 described later) to the cell holder 120 on the upper surfaces of the side surfaces 121b and 121d. It has a screw hole 123b. The screw holes 123b are preferably provided in the vicinity of an opening 124a to which a total plus terminal bus bar 164 and a total minus terminal bus bar 165 described later are attached.
　保持蓋１２２は、セルホルダ１２０と下部ケース１１０との係合状態における電池セル１５０の正極端子１５２及び負極端子１５３に対応する位置に、開口１２４ａを有する。つまり、図８に示すように、セルホルダ１２０と下部ケース１１０との係合状態において、電池セル１５０の正極端子１５２及び負極端子１５３は、開口１２４ａから保持蓋１２２の上面側に露出した状態となる。 The holding lid 122 has an opening 124 a at a position corresponding to the positive electrode terminal 152 and the negative electrode terminal 153 of the battery cell 150 when the cell holder 120 and the lower case 110 are engaged. That is, as shown in FIG. 8, in the engaged state between the cell holder 120 and the lower case 110, the positive terminal 152 and the negative terminal 153 of the battery cell 150 are exposed from the opening 124 a to the upper surface side of the holding lid 122. .
　また、保持蓋１２２は、セルホルダ１２０と下部ケース１１０との係合状態における電池セル１５０の安全弁１５４に対応する位置に、開口１２４ｂを有する。つまり、図８に示すように、セルホルダ１２０と下部ケース１１０との係合状態において、安全弁１５４から排出されたガスは、開口１２４ａから電池セル１５０の外部に排出される。 Further, the holding lid 122 has an opening 124b at a position corresponding to the safety valve 154 of the battery cell 150 when the cell holder 120 and the lower case 110 are engaged. That is, as shown in FIG. 8, in the engaged state between the cell holder 120 and the lower case 110, the gas discharged from the safety valve 154 is discharged from the opening 124a to the outside of the battery cell 150.
　開口１２４ａから露出して一列に整列した正極端子１５２及び負極端子１５３は、ヒュージブルリンク２４０に接続される正極端子１５２とＧＮＤ端子２７０に接続される負極端子１５３とを除いて、隣り合う端子同士がセル間バスバ１６０により電気的に接続される。セル間バスバ１６０は、例えばアルミニウム等の導電性の金属で構成される。セル間バスバ１６０は、セルホルダ１２０に取り付けられて正極端子１５２と負極端子１５３とに接続した状態における、開口１２４ａ間での保持蓋１２２のフレーム部分１２２ａとの干渉を回避するための凸部１６１を有する。つまり、セル間バスバ１６０は、側面視において、正極端子１５２及び負極端子１５３に接続する２つの端子接続部１６２と、２つの端子接続部１６２を接続する、端子接続部１６２から上面側に突出した凸部１６１とを有する。 The positive electrode terminal 152 and the negative electrode terminal 153 that are exposed from the opening 124a and aligned in a row are adjacent to each other except for the positive electrode terminal 152 connected to the fusible link 240 and the negative electrode terminal 153 connected to the GND terminal 270. Are electrically connected by the inter-cell bus bar 160. The inter-cell bus bar 160 is made of a conductive metal such as aluminum. The inter-cell bus bar 160 has a convex portion 161 for avoiding interference with the frame portion 122a of the holding lid 122 between the openings 124a in a state where the inter-cell bus bar 160 is connected to the positive electrode terminal 152 and the negative electrode terminal 153. Have. That is, the inter-cell bus bar 160 protrudes from the terminal connection part 162 connecting the two terminal connection parts 162 and the two terminal connection parts 162 connected to the positive electrode terminal 152 and the negative electrode terminal 153 to the upper surface side in a side view. And a convex portion 161.
　端子接続部１６２は、例えば図９に示すように、中央に溶接用開口１６２ａを有する。セル間バスバ１６０並びに後述する総プラス端子バスバ１６４及び総マイナス端子バスバ１６５は、溶接用開口１６２ａの周縁部においてビード溶接により、電池セル１５０の各端子に接続される。 The terminal connecting portion 162 has a welding opening 162a at the center, for example, as shown in FIG. The inter-cell bus bar 160 and the later-described total plus terminal bus bar 164 and total minus terminal bus bar 165 are connected to each terminal of the battery cell 150 by bead welding at the periphery of the welding opening 162a.
　また、各端子接続部１６２は、セルホルダ１２０に取り付けた状態において、開口１２４ｂ側に突出する電圧センサ取付端子１６３を有する。各電圧センサ取付端子１６３は、ねじ穴１６３ａを有する。セル間バスバ１６０において、各電圧センサ取付端子１６３は、セル間バスバ１６０の端子接続部１６２を正極端子１５２又は負極端子１５３に接続した場合に、後述するねじ穴形成部１２６上に配置されるように形成されている。ねじ穴１６３ａは、電圧センサ取付端子１６３がねじ穴形成部１２６上に配置された状態において、ねじ穴形成部１２６に形成されたねじ穴１２６ａと重なり、ＬＢＣ１４０のねじ留めにより、ねじ穴１２６ａとねじ穴１６３ａとが合わせてねじ留めされる。電圧センサ取付端子１６３は、電圧センサに接続され、端子間の電圧を検出するために用いられる。 In addition, each terminal connection portion 162 has a voltage sensor attachment terminal 163 that protrudes toward the opening 124b when attached to the cell holder 120. Each voltage sensor attachment terminal 163 has a screw hole 163a. In the inter-cell bus bar 160, each voltage sensor mounting terminal 163 is arranged on a screw hole forming portion 126 described later when the terminal connection portion 162 of the inter-cell bus bar 160 is connected to the positive terminal 152 or the negative terminal 153. Is formed. The screw hole 163a overlaps with the screw hole 126a formed in the screw hole forming part 126 in a state where the voltage sensor mounting terminal 163 is disposed on the screw hole forming part 126, and the screw hole 126a and screw are screwed by the LBC 140. The holes 163a are screwed together. The voltage sensor attachment terminal 163 is connected to the voltage sensor and used to detect a voltage between the terminals.
　また、ヒュージブルリンク２４０に接続される正極端子１５２には、総プラス端子バスバ１６４が接続され、ＧＮＤ端子２７０に接続される負極端子１５３には、総マイナス端子バスバ１６５が接続される。総プラス端子バスバ１６４及び総マイナス端子バスバ１６５は、例えばアルミニウム等の導電性の金属で構成される。総プラス端子バスバ１６４及び総マイナス端子バスバ１６５は、１つの端子接続部１６２と、それぞれ補機台座２００が備える総プラス銅バスバ２８５及び総マイナス銅バスバ２８６に接続するための外部接続部１６６とを有する。外部接続部１６６は、外周枠１２１の内側の面及び外側の面を挟持するような、端子接続部１６２よりも上面側に突出した凸形状になっている。特に、外部接続部１６６は、図１６に示すように、外周枠１２１の内側の面から外側の面に跨って形成されるバスバ支持部１２３ｃに沿って取り付けられる。また、外部接続部１６６は、外周枠１２１に取り付けられた状態において、ねじ穴１２３ｂに対応する位置にねじ穴１６６ａを有する。なお、総プラス端子バスバ１６４及び総マイナス端子バスバ１６５の端子接続部１６２も、セルホルダ１２０に取り付けた状態において、開口１２４ｂ側に突出する電圧センサ取付端子１６３を有する。 Also, the total positive terminal bus bar 164 is connected to the positive terminal 152 connected to the fusible link 240, and the total negative terminal bus bar 165 is connected to the negative terminal 153 connected to the GND terminal 270. The total plus terminal bus bar 164 and the total minus terminal bus bar 165 are made of a conductive metal such as aluminum. The total plus terminal bus bar 164 and the total minus terminal bus bar 165 include one terminal connection part 162 and an external connection part 166 for connecting to the total plus copper bus bar 285 and the total minus copper bus bar 286 provided in the auxiliary machine base 200, respectively. Have. The external connection portion 166 has a convex shape that protrudes to the upper surface side of the terminal connection portion 162 so as to sandwich the inner surface and the outer surface of the outer peripheral frame 121. In particular, as shown in FIG. 16, the external connection portion 166 is attached along a bus bar support portion 123 c formed from the inner surface to the outer surface of the outer peripheral frame 121. Moreover, the external connection part 166 has the screw hole 166a in the position corresponding to the screw hole 123b in the state attached to the outer periphery frame 121. As shown in FIG. Note that the terminal connection portions 162 of the total plus terminal bus bar 164 and the total minus terminal bus bar 165 also have a voltage sensor mounting terminal 163 that protrudes toward the opening 124b when mounted on the cell holder 120.
　保持蓋１２２は、セルホルダ１２０に取り付けられるセル間バスバ１６０同士の間、及び、セル間バスバ１６０と総プラス端子バスバ１６４又は総マイナス端子バスバ１６５との間に、バスバ同士の電気的な接続を防止するとともにバスバの位置決めを行うためのビード１２５を備える。ビード１２５は、保持蓋１２２の上面側に突出する。 The holding lid 122 prevents electrical connection between the bus bars between the inter-cell bus bars 160 attached to the cell holder 120 and between the inter-cell bus bar 160 and the total plus terminal bus bar 164 or the total minus terminal bus bar 165. And a bead 125 for positioning the bus bar. The bead 125 projects to the upper surface side of the holding lid 122.
　また、保持蓋１２２は、上面側にＬＢＣ１４０を固定するためのねじ穴形成部１２６を備える。ねじ穴形成部１２６は、保持蓋１２２の上面側において、開口１２４ａと開口１２４ｂとの間に形成される。すなわち、本実施形態においては、保持蓋１２２は、１０個のねじ穴形成部１２６を備える。ねじ穴形成部１２６は、略円柱形状であり、中央にねじ穴１２６ａが設けられている。ＬＢＣ１４０は、セルホルダ１２０の上面側に載置され、ねじ穴形成部１２６に形成されたねじ穴１２６ａを使用して、上面側からセルホルダ１２０にねじ留めされる。 Further, the holding lid 122 includes a screw hole forming portion 126 for fixing the LBC 140 on the upper surface side. The screw hole forming portion 126 is formed between the opening 124 a and the opening 124 b on the upper surface side of the holding lid 122. That is, in the present embodiment, the holding lid 122 includes ten screw hole forming portions 126. The screw hole forming portion 126 has a substantially cylindrical shape, and a screw hole 126a is provided at the center. The LBC 140 is placed on the upper surface side of the cell holder 120 and is screwed to the cell holder 120 from the upper surface side using the screw holes 126a formed in the screw hole forming portion 126.
　また、保持蓋１２２は、下面側において、下部ケース１１０に収容する電池セル１５０の位置ずれを防止するためのリブ１２７を備える。リブ１２７は、側面１２１ｂ及び１２１ｄに平行に、等間隔に４つ設けられる。つまり、保持蓋１２２のリブ１２７は、セルホルダ１２０と下部ケース１１０とが係合した状態において、下部ケース１１０のガイド１１６に対応する方向及び位置に設けられる。 Moreover, the holding lid 122 includes a rib 127 for preventing the displacement of the battery cell 150 accommodated in the lower case 110 on the lower surface side. Four ribs 127 are provided at equal intervals in parallel to the side surfaces 121b and 121d. That is, the rib 127 of the holding lid 122 is provided in a direction and position corresponding to the guide 116 of the lower case 110 in a state where the cell holder 120 and the lower case 110 are engaged.
　外周枠１２１は、全周に亘って、所定の高さの係合挿入部１２１ｅを有する。係合挿入部１２１ｅは、外周枠１２１の他の箇所よりも厚みが薄くなっており、そのため、外周枠１２１の外側の面は、係合挿入部１２１ｅが、外周枠１２１の他の箇所よりも窪んでいる。係合挿入部１２１ｅは、図１１（ｂ）に示すように、セルホルダ１２０を下部ケース１１０に係合させる際に、下部ケース１１０の開口１１３側において、下部ケース１１０の内側に挿入される。 The outer peripheral frame 121 has an engagement insertion portion 121e having a predetermined height over the entire circumference. The engagement insertion portion 121e is thinner than other portions of the outer peripheral frame 121. Therefore, the outer surface of the outer peripheral frame 121 has an engagement insertion portion 121e that is thinner than other portions of the outer peripheral frame 121. It is depressed. As shown in FIG. 11B, the engaging insertion portion 121 e is inserted inside the lower case 110 on the opening 113 side of the lower case 110 when the cell holder 120 is engaged with the lower case 110.
　各側面１２１ａ、１２１ｂ、１２１ｃ及び１２１ｄにおいて、係合挿入部１２１ｅは、中央及び両端近傍に、３つの係合爪１２８を備える。係合爪１２８は、下部ケース１１０の係合孔１１５に対応する位置に設けられる。セルホルダ１２０と下部ケース１１０とを係合させる際、セルホルダ１２０の係合爪１２８が、下部ケース１１０の係合孔１１５に嵌め込まれて係合されることにより、セルホルダ１２０と下部ケース１１０とが係合される。なお、係合孔１１５及び係合爪１２８の位置及び数量は、本実施形態において示した例に限られず、適宜の位置及び数量に決定することができる。 In each of the side surfaces 121a, 121b, 121c, and 121d, the engagement insertion portion 121e includes three engagement claws 128 at the center and in the vicinity of both ends. The engagement claw 128 is provided at a position corresponding to the engagement hole 115 of the lower case 110. When the cell holder 120 and the lower case 110 are engaged, the engagement claw 128 of the cell holder 120 is fitted into the engagement hole 115 of the lower case 110 to be engaged, whereby the cell holder 120 and the lower case 110 are engaged. Combined. The positions and quantities of the engagement holes 115 and the engagement claws 128 are not limited to the examples shown in the present embodiment, and can be determined as appropriate positions and quantities.
　また、外周枠１２１は、側面１２１ａ及び１２１ｃの上面側であって、ねじ穴１２３ｂの近傍に係合孔１２９ａを備える。係合孔１２９ａは、外周枠１２１から外部側に突出するように設けられており、上面視において、略長方形状の孔になっている。係合孔１２９ａは、セルホルダ１２０と補機台座２００とを組み付ける際に使用される。 The outer peripheral frame 121 is provided with an engagement hole 129a on the upper surface side of the side surfaces 121a and 121c and in the vicinity of the screw hole 123b. The engagement hole 129a is provided so as to protrude outward from the outer peripheral frame 121, and is a substantially rectangular hole when viewed from above. The engagement hole 129a is used when the cell holder 120 and the auxiliary machine base 200 are assembled.
　また、外周枠１２１は、各側面１２１ａ、１２１ｂ、１２１ｃ及び１２１ｄの中央付近の上面側に、係合孔１２９ｂを備える。係合孔１２９ｂは、外周枠１２１から外部側に突出するように設けられており、上面視において、略長方形状の孔になっている。係合孔１２９ｂは、セルホルダ１２０と上部ケースとを組み付ける際に使用される。なお、係合孔１２９ｂは、必ずしも各側面１２１ａ、１２１ｂ、１２１ｃ及び１２１ｄの中央付近に設けられていなくてもよく、後述する上部ケースを係合可能な位置であれば、任意の位置に設けられていてもよい。 Further, the outer peripheral frame 121 includes an engagement hole 129b on the upper surface side near the center of each of the side surfaces 121a, 121b, 121c and 121d. The engagement hole 129b is provided so as to protrude outward from the outer peripheral frame 121, and is a substantially rectangular hole in a top view. The engagement hole 129b is used when the cell holder 120 and the upper case are assembled. Note that the engagement hole 129b is not necessarily provided near the center of each of the side surfaces 121a, 121b, 121c, and 121d, and may be provided at any position as long as the upper case described later can be engaged. It may be.
　ここで、電池モジュール群の組立について説明する。まず、電池セル１５０に接着剤を塗布する。接着剤は、電池セル１５０と、下部ケース１１０及びセルホルダ１２０とを接着可能な任意の接着剤であり、例えばエポキシ系接着剤を使用することができる。セルホルダ１２０と下部ケース１１０とを係合した際に、下部ケース１１０内で電池セル１５０の位置が固定されていればよいため、接着剤は、必ずしも電池セル１５０の全体に塗布されていなくてもよく、電池セル１５０の一部分に塗布されてもよい。例えば、接着剤は、電池セル１５０において、下部ケース１１０に電池セル１５０を挿入した際に底面１１１に接触する面（つまりキャップ面１５１の反対側の面）と、セルホルダ１２０で上面側から電池セル１５０を保持する際に保持蓋１２２に接触する面（つまりキャップ面１５１）とに、塗布されてもよい。特に、キャップ面１５１は、正極端子１５２と、負極端子１５３と、安全弁１５４とを有するため、これらの正極端子１５２、負極端子１５３及び安全弁１５４に接着剤が塗布されないよう、例えば、キャップ面１５１の長手方向の周縁にのみ接着剤が塗布されてもよい。 Here, the assembly of the battery module group will be described. First, an adhesive is applied to the battery cell 150. The adhesive is an arbitrary adhesive capable of bonding the battery cell 150, the lower case 110, and the cell holder 120. For example, an epoxy-based adhesive can be used. When the cell holder 120 and the lower case 110 are engaged with each other, it is only necessary that the position of the battery cell 150 is fixed in the lower case 110, so that the adhesive is not necessarily applied to the entire battery cell 150. It may be applied to a part of the battery cell 150. For example, in the battery cell 150, the adhesive is a battery cell that contacts the bottom surface 111 when the battery cell 150 is inserted into the lower case 110 (that is, the surface opposite to the cap surface 151) and the cell holder 120 from the top surface side. It may be applied to the surface (that is, the cap surface 151) that contacts the holding lid 122 when holding 150. In particular, since the cap surface 151 includes the positive electrode terminal 152, the negative electrode terminal 153, and the safety valve 154, for example, the cap surface 151 of the cap surface 151 is prevented from being coated with the positive electrode terminal 152, the negative electrode terminal 153, and the safety valve 154. The adhesive may be applied only to the peripheral edge in the longitudinal direction.
　図１０は、電池セル１５０において、下部ケース１１０に電池セル１５０を挿入した際に底面１１１に接触する面と、セルホルダ１２０で上面側から電池セル１５０を保持する際に保持蓋１２２に接触する面（つまりキャップ面１５１）とに接着剤を塗布した場合における、接着位置を模式的に示す図である。図１０は、図８のＡ－Ａ線における断面図であり、積層された５つの電池セル１５０のうち、特に中央の電池セル１５０及びその周辺のみを示している。また、図１０では、接着剤が塗布される領域を、網掛けにより示している。この場合、図１０に示されるように、電池セル１５０は、保持蓋１２２とリブ１２７との交差部分の周辺においてセルホルダ１２０に接着され、底面１１１において下部ケース１１０に接着される。 10 shows a surface of the battery cell 150 that contacts the bottom surface 111 when the battery cell 150 is inserted into the lower case 110 and a surface that contacts the holding lid 122 when the cell holder 120 holds the battery cell 150 from the upper surface side. It is a figure which shows typically the adhesion position when an adhesive agent is applied to (that is, cap surface 151). FIG. 10 is a cross-sectional view taken along the line AA in FIG. 8 and shows only the central battery cell 150 and its periphery among the five stacked battery cells 150. Moreover, in FIG. 10, the area | region where an adhesive agent is apply | coated is shown with the hatching. In this case, as shown in FIG. 10, the battery cell 150 is bonded to the cell holder 120 around the intersection of the holding lid 122 and the rib 127, and is bonded to the lower case 110 on the bottom surface 111.
　なお、電池セル１５０と下部ケース１１０の底面１１１との間に塗布されるのは、接着剤に限られない。電池セル１５０と底面１１１との間には、他の充填剤が塗布されてもよい。充填剤は、特に弾性を有するものが好ましい。弾性を有する充填剤を電池セル１５０と底面１１１との間に塗布することにより、組電池１００を備える車両の走行時に生じる振動を充填剤が吸収するため、電池セル１５０に振動が伝達されにくい。 In addition, what is applied between the battery cell 150 and the bottom surface 111 of the lower case 110 is not limited to the adhesive. Another filler may be applied between the battery cell 150 and the bottom surface 111. The filler is particularly preferably elastic. By applying an elastic filler between the battery cell 150 and the bottom surface 111, the filler absorbs vibration generated when the vehicle including the assembled battery 100 travels, so that vibration is hardly transmitted to the battery cell 150.
　次に、セルホルダ１２０を上下反転させた状態で、電池セル１５０のキャップ面１５１を下向きにして、セルホルダ１２０の保持蓋１２２の下面側に、リブ１２７に従って電池セル１５０を挿入する。そして、下部ケース１１０を上下反転させた状態で、電池セル１５０が挿入されたセルホルダ１２０に覆い被せるようにして、下部ケース１１０をセルホルダ１２０に係合させる。このとき、図１１（ａ）及び（ｂ）に示すように、セルホルダ１２０の係合爪１２８を下部ケース１１０の係合孔１１５に係合させる。セルホルダ１２０と下部ケース１１０とが係合した状態の様子の一例が、図８に示されている。 Next, in a state where the cell holder 120 is turned upside down, the cap surface 151 of the battery cell 150 is turned downward, and the battery cell 150 is inserted into the lower surface side of the holding lid 122 of the cell holder 120 according to the rib 127. Then, with the lower case 110 turned upside down, the lower case 110 is engaged with the cell holder 120 so as to cover the cell holder 120 into which the battery cell 150 is inserted. At this time, as shown in FIGS. 11A and 11B, the engagement claw 128 of the cell holder 120 is engaged with the engagement hole 115 of the lower case 110. An example of a state in which the cell holder 120 and the lower case 110 are engaged is shown in FIG.
　なお、電池セル１５０の接着手順は、上記手順に限られない。例えば、下部ケース１１０及びセルホルダ１２０を上下反転させることなく、電池セル１５０を下部ケース１１０の空間１１０ａに挿入し、その上からセルホルダ１２０を下部ケース１１０に係合させてもよい。 In addition, the adhesion procedure of the battery cell 150 is not limited to the above procedure. For example, the battery cell 150 may be inserted into the space 110a of the lower case 110 without causing the lower case 110 and the cell holder 120 to be turned upside down, and the cell holder 120 may be engaged with the lower case 110 from above.
　そして、保持蓋１２２の開口１２４ａから露出した電池セル１５０の各端子に、セル間バスバ１６０、総プラス端子バスバ１６４及び総マイナス端子バスバ１６５を、ビード溶接により取り付け、保持蓋１２２にＬＢＣ１４０を取り付けることにより、電池モジュール群の組立が完了する。ＬＢＣ１４０は、上述したように、例えばねじ留めにより保持蓋１２２に取り付けられる。 Then, the inter-cell bus bar 160, the total plus terminal bus bar 164, and the total minus terminal bus bar 165 are attached to each terminal of the battery cell 150 exposed from the opening 124a of the holding lid 122 by bead welding, and the LBC 140 is attached to the holding lid 122. Thus, the assembly of the battery module group is completed. As described above, the LBC 140 is attached to the holding lid 122 by, for example, screwing.
　次に、本実施形態に係る組電池１００の補機モジュール群について説明する。補機モジュール群は、補機台座２００と、補機台座２００上に配置されるＭＯＳＦＥＴ２１０、リレー２２０、電流センサ２３０及びヒュージブルリンク２４０と、補機台座２００上に配置される各部品を電気的に接続するための銅バスバとを組み付けることにより構成される。 Next, the auxiliary machine module group of the assembled battery 100 according to the present embodiment will be described. The auxiliary equipment module group electrically connects the auxiliary equipment base 200, the MOSFET 210, the relay 220, the current sensor 230 and the fusible link 240 arranged on the auxiliary equipment base 200, and each component arranged on the auxiliary equipment base 200. It is configured by assembling a copper bus bar for connection to the cable.
　補機台座２００は、４つの側面２００ａ、２００ｂ、２００ｃ及び２００ｄと、載置面２０１とを有する。４つの側面２００ａ、２００ｂ、２００ｃ及び２００ｄは、補機台座２００が電池モジュール群に組み付けられた状態において、それぞれ下部ケース１１０の４つの側面１１２ａ、１１２ｂ、１１２ｃ及び１１２ｄ（及びセルホルダ１２０の４つの側面１２１ａ、１２１ｂ、１２１ｃ及び１２１ｄ）に対応する位置に配置される。 The auxiliary machine base 200 has four side surfaces 200a, 200b, 200c and 200d, and a mounting surface 201. The four side surfaces 200a, 200b, 200c, and 200d are the four side surfaces 112a, 112b, 112c, and 112d (and the four side surfaces of the cell holder 120) of the lower case 110, respectively, in a state where the auxiliary machine base 200 is assembled to the battery module group. 121a, 121b, 121c and 121d).
　載置面２０１には、側面２００ａの近傍に電流センサ２３０が、側面２００ｂの近傍にＭＯＳＦＥＴ２１０が、側面２００ｃの近傍にリレー２２０が、側面２００ｄの近傍にヒュージブルリンク２４０が、それぞれ載置される。載置面２０１には、図１２に示すように、ＭＯＳＦＥＴ２１０、リレー２２０、電流センサ２３０及びヒュージブルリンク２４０を載置する位置に応じて、凹凸が形成されている。載置面２０１は、凹凸により、凹凸がない場合と比較して剛性が高くなっている。 On the mounting surface 201, a current sensor 230 is mounted near the side surface 200a, a MOSFET 210 is mounted near the side surface 200b, a relay 220 is mounted near the side surface 200c, and a fusible link 240 is mounted near the side surface 200d. . As shown in FIG. 12, unevenness is formed on the mounting surface 201 according to the position where the MOSFET 210, the relay 220, the current sensor 230 and the fusible link 240 are mounted. The mounting surface 201 has higher rigidity due to the unevenness than when there is no unevenness.
　本実施形態において、載置面２０１の凹凸は、図１２に示すように、載置面２０１においてリレー２２０が載置される領域２０１ｃが、電流センサ２３０が載置される領域２０１ａ、ＭＯＳＦＥＴ２１０が載置される領域２０１ｂ及びヒュージブルリンク２４０が載置される領域２０１ｄと比較して、組電池１００を組み立てた際に高い位置になるように形成されている。また、載置面２０１の凹凸は、ヒュージブルリンク２４０が載置される領域２０１ｄが、領域２０１ａ及び領域２０１ｂと比較して、組電池１００を組み立てた際に高い位置になるように形成されている。つまり、載置面２０１の凹凸は、電流センサ２３０が載置される領域２０１ａが、領域２０１ｃ及び領域２０１ｄよりも低い位置になるように形成されている。載置面２０１がこのような凹凸を有することにより、ヒュージブルリンク２４０を、補機台座２００においてリレー２２０よりも低い位置に配置するとともに、ヒュージブルリンク２４０よりも厚い電流センサ２３０も、リレー２２０よりも低い位置に配置することができる。 In the present embodiment, as shown in FIG. 12, the unevenness of the mounting surface 201 includes an area 201c on the mounting surface 201 where the relay 220 is mounted, an area 201a where the current sensor 230 is mounted, and a MOSFET 210. It is formed so as to be at a higher position when the assembled battery 100 is assembled as compared to the area 201b to be placed and the area 201d to which the fusible link 240 is placed. Further, the unevenness of the mounting surface 201 is formed so that the region 201d where the fusible link 240 is mounted is at a higher position when the assembled battery 100 is assembled than the regions 201a and 201b. Yes. That is, the unevenness of the placement surface 201 is formed such that the region 201a where the current sensor 230 is placed is at a lower position than the region 201c and the region 201d. Since the mounting surface 201 has such irregularities, the fusible link 240 is disposed at a position lower than the relay 220 in the auxiliary machine base 200, and the current sensor 230 thicker than the fusible link 240 is also connected to the relay 220. Can be arranged at a lower position.
　電流センサ２３０、ＭＯＳＦＥＴ２１０、リレー２２０及びヒュージブルリンク２４０は、それぞれ領域２０１ａ、２０１ｂ、２０１ｃ及び２０１ｄにおいて、載置面２０１の凹凸により形成される立ち壁又は載置面２０１に形成されたリブ２０２により、位置決めされる。 The current sensor 230, the MOSFET 210, the relay 220, and the fusible link 240 are respectively formed by standing walls formed by unevenness of the mounting surface 201 or ribs 202 formed on the mounting surface 201 in the regions 201a, 201b, 201c, and 201d. Is positioned.
　本実施形態では、例えば図１２及び図１４に示すように、領域２０１ｃは、その周囲の一部がリブ２０２により囲われている。つまり、リレー２２０は、リブ２０２により位置決めされる。リブ２０２は、ナット２９０でリレー２２０を補機台座２００に固定する際の廻り止めの機能も有する。また、リブ２０２は、後述する銅バスバ同士の接触を防止する絶縁の機能も有する。 In this embodiment, for example, as shown in FIGS. 12 and 14, the region 201 c is partially surrounded by the rib 202. That is, the relay 220 is positioned by the rib 202. The rib 202 also has a function of preventing rotation when the relay 220 is fixed to the auxiliary machine base 200 with the nut 290. The rib 202 also has an insulating function for preventing contact between copper bus bars, which will be described later.
　また、ＭＯＳＦＥＴ２１０、リレー２２０及びヒュージブルリンク２４０は、それぞれ領域２０１ａ、２０１ｂ及び２０１ｄの周囲の一部に形成された立ち壁により位置決めされる。載置面２０１における立ち壁は、ナット２９０でＭＯＳＦＥＴ２１０、リレー２２０及びヒュージブルリンク２４０を補機台座２００に固定する際の廻り止めの機能も有する。 Further, the MOSFET 210, the relay 220, and the fusible link 240 are positioned by standing walls formed in parts around the areas 201a, 201b, and 201d, respectively. The standing wall on the mounting surface 201 also has a function of preventing rotation when the MOSFET 210, the relay 220, and the fusible link 240 are fixed to the auxiliary machine base 200 with the nut 290.
　また、補機台座２００は、載置面２０１に複数の上向きのスタッド２０３を備える。スタッド２０３は、電池モジュール群の電池セル１５０と、ＭＯＳＦＥＴ２１０と、リレー２２０と、電流センサ２３０と、ヒュージブルリンク２４０とを互いに電気的に接続するために使用される。また、ＳＳＧ端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０も、補機台座２００の載置面２０１から上向き（載置面２０１に略直交する向き）に延在して設けられており、スタッドとして機能する。すなわち、ＳＳＧ端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０が同じ向きに設けられているため、ハーネス締結のための配線を容易に行うことができる。またＳＳＧ端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０はいずれも、同一側面（図１２に向かって右側の側面２００ａ）に接する縁部に設けられているため、同一方向からの作業が可能であり、配線が容易である。このため、配線を自動化しやすい。 The auxiliary machine base 200 includes a plurality of upward studs 203 on the mounting surface 201. The stud 203 is used to electrically connect the battery cells 150 of the battery module group, the MOSFET 210, the relay 220, the current sensor 230, and the fusible link 240 to each other. Further, the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 are also provided so as to extend upward from the mounting surface 201 of the auxiliary machine base 200 (direction substantially orthogonal to the mounting surface 201) and function as studs. To do. That is, since the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 are provided in the same direction, wiring for harness fastening can be easily performed. In addition, since the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 are all provided at the edge that contacts the same side surface (the right side surface 200a as viewed in FIG. 12), work from the same direction is possible. Wiring is easy. For this reason, it is easy to automate wiring.
　各スタッド２０３と、ＳＳＧ端子２５０と、ＬＯＡＤ端子２６０と、ＧＮＤ端子２７０とは、凹凸を有する載置面２０１において、適宜な高さに設けられる。例えば、各スタッド２０３は、載置面２０１において、各領域２０１ａ、２０１ｂ、２０１ｃ及び２０１ｄにそれぞれ載置される電流センサ２３０、ＭＯＳＦＥＴ２１０、リレー２２０及びヒュージブルリンク２４０の各端子に合わせた高さに設けられる。つまり、各スタッド２０３の直径は、電流センサ２３０、ＭＯＳＦＥＴ２１０、リレー２２０及びヒュージブルリンク２４０の各端子に設けられた接続用開口に合わせた大きさになっており、電流センサ２３０、ＭＯＳＦＥＴ２１０、リレー２２０及びヒュージブルリンク２４０は、それぞれ上面側から端子の接続用開口にスタッド２０３を通すことにより、補機台座２００に取り付けられる。このように各スタッド２０３の向きを、ＧＮＤ端子２７０、ＳＳＧ端子２５０及びＬＯＡＤ端子２６０と同様に上向きにすることにより、自動化等により補機台座２００への各部品の取り付けがしやすく仮固定も可能となるため、補機モジュール及び組電池１００の生産性が向上する。 Each stud 203, SSG terminal 250, LOAD terminal 260, and GND terminal 270 are provided at an appropriate height on the mounting surface 201 having irregularities. For example, each stud 203 has a height matching the terminals of the current sensor 230, the MOSFET 210, the relay 220, and the fusible link 240 placed on each of the regions 201 a, 201 b, 201 c, and 201 d on the placement surface 201. Provided. That is, the diameter of each stud 203 is sized according to the connection opening provided in each terminal of the current sensor 230, MOSFET 210, relay 220, and fusible link 240, and the current sensor 230, MOSFET 210, relay 220. The fusible link 240 is attached to the accessory base 200 by passing the stud 203 from the upper surface side to the terminal connection opening. In this way, by making the direction of each stud 203 upward like the GND terminal 270, the SSG terminal 250, and the LOAD terminal 260, it is easy to attach each component to the auxiliary machine base 200 by automation or the like and can be temporarily fixed. Therefore, the productivity of the auxiliary machine module and the assembled battery 100 is improved.
　また、本実施形態において例えば図１２に示すように、補機台座２００は複数の段を有しており、例えばＧＮＤ端子２７０は段２７０ａに、ＳＳＧ端子２５０は段２５０ａに、ＬＯＡＤ端子２６０は段２６０ａに設けられる。段とは、立ち壁又はリブ２０２等によって区切られた領域である。ＧＮＤ端子２７０は、ＳＳＧ端子２５０及びＬＯＡＤ端子２６０よりも低い段に（低い高さの位置に）段違いに設けられる。具体的には、図１２の補機台座２００を図面奥側から見た場合の側面図である図１３（ｃ）に示す通り、ＧＮＤ端子２７０の高さｈ３が、ＳＳＧ端子２５０の高さｈ１及びＬＯＡＤ端子２６０の高さｈ２よりも低い。しかしながら、代替例として、ＧＮＤ端子２７０の高さｈ３は、ＳＳＧ端子２５０の高さｈ１及びＬＯＡＤ端子２６０の高さｈ２よりも高くてもよい。ＳＳＧ端子２５０の高さｈ１とＬＯＡＤ端子２６０の高さｈ２は同じであってもよいし、異なってもよい。このように、ＧＮＤ端子２７０と、ＳＳＧ端子２５０及びＬＯＡＤ端子２６０との高さを変えることにより、ＧＮＤ端子２７０の識別性が高まるため、組電池１００を車両に搭載する際等における誤配線を防止しやすくなる。また、補機台座２００は、ＧＮＤ端子２７０が設けられる載置面２０１とは反対側で、ＧＮＤ端子２７０に接続された総マイナス銅バスバ２８６を介してセルホルダ１２０と組み付けられる。したがって、ＧＮＤ端子２７０が、ＳＳＧ端子２５０及びＬＯＡＤ端子２６０よりも低い段に設けられる場合、ＳＳＧ端子２５０及びＬＯＡＤ端子２６０よりも高い段に設けられる場合に比べて総マイナス銅バスバ２８６を短くすることができる。このため、総マイナス銅バスバ２８６に過剰な（所定値以上の）応力が掛かることを防ぐことができる。 In this embodiment, for example, as shown in FIG. 12, the auxiliary machine base 200 has a plurality of stages. For example, the GND terminal 270 is in the stage 270a, the SSG terminal 250 is in the stage 250a, and the LOAD terminal 260 is in the stage. 260a. A step is an area delimited by standing walls or ribs 202. The GND terminal 270 is provided at a level lower than the SSG terminal 250 and the LOAD terminal 260 (at a low height). Specifically, as shown in FIG. 13C, which is a side view when the auxiliary machine base 200 of FIG. 12 is viewed from the back side of the drawing, the height h3 of the GND terminal 270 is equal to the height h1 of the SSG terminal 250. And the height h2 of the LOAD terminal 260 is lower. However, as an alternative, the height h3 of the GND terminal 270 may be higher than the height h1 of the SSG terminal 250 and the height h2 of the LOAD terminal 260. The height h1 of the SSG terminal 250 and the height h2 of the LOAD terminal 260 may be the same or different. Thus, by changing the heights of the GND terminal 270, the SSG terminal 250, and the LOAD terminal 260, the GND terminal 270 can be identified more easily, so that incorrect wiring when the assembled battery 100 is mounted on a vehicle can be prevented. It becomes easy to do. The auxiliary machine base 200 is assembled with the cell holder 120 via a total minus copper bus bar 286 connected to the GND terminal 270 on the side opposite to the mounting surface 201 on which the GND terminal 270 is provided. Therefore, when the GND terminal 270 is provided at a level lower than the SSG terminal 250 and the LOAD terminal 260, the total minus copper bus bar 286 is shortened as compared with the case where the GND terminal 270 is provided at a level higher than the SSG terminal 250 and the LOAD terminal 260. Can do. For this reason, it is possible to prevent excessive (more than a predetermined value) stress from being applied to the total minus copper bus bar 286.
　ここで、補機台座２００上における、銅バスバを使用した各部品の配線について説明する。図１４及び図１５に示すように、銅バスバ２８０乃至２８４は、補機台座２００の載置面２０１の凹凸に沿うように、配置される位置に応じて多様な形状を有する。 Here, the wiring of each part using the copper bus bar on the auxiliary machine base 200 will be described. As shown in FIGS. 14 and 15, the copper bus bars 280 to 284 have various shapes according to the positions where they are arranged along the unevenness of the mounting surface 201 of the auxiliary machine base 200.
　ヒュージブルリンク２４０の端子２４０ｂは、銅バスバ２８０を介して、電流センサ２３０の端子２３０ａに電気的に接続される。電流センサ２３０の他方の端子２３０ｂは、銅バスバ２８１を介して、リレー２２０の端子２２０ａに電気的に接続される。リレー２２０の他方の端子２２０ｂは、銅バスバ２８２を介して、ＭＯＳＦＥＴ２１０の端子２１０ａに電気的に接続される。リレー２２０の端子２２０ｂは、さらに、銅バスバ２８２及び２８３を介して、ＳＳＧ端子２５０に電気的に接続される。ＭＯＳＦＥＴ２１０の他方の端子２１０ｂは、銅バスバ２８４を介して、ＬＯＡＤ端子２６０に電気的に接続される。 The terminal 240b of the fusible link 240 is electrically connected to the terminal 230a of the current sensor 230 via the copper bus bar 280. The other terminal 230 b of the current sensor 230 is electrically connected to the terminal 220 a of the relay 220 via the copper bus bar 281. The other terminal 220 b of the relay 220 is electrically connected to the terminal 210 a of the MOSFET 210 via the copper bus bar 282. Terminal 220 b of relay 220 is further electrically connected to SSG terminal 250 via copper bus bars 282 and 283. The other terminal 210 b of the MOSFET 210 is electrically connected to the LOAD terminal 260 via the copper bus bar 284.
　ヒュージブルリンク２４０の端子２４０ａには、電池モジュール群の総プラス端子バスバ１６４に電気的に接続するための総プラス銅バスバ２８５が接続される。また、ＧＮＤ端子２７０には、電池モジュール群の総マイナス端子バスバ１６５に電気的に接続するための総マイナス銅バスバ２８６が接続される。総プラス銅バスバ２８５及び総マイナス銅バスバ２８６は、それぞれ側面２００ｂ及び２００ｄに沿って下面側に延びており、その先端が、補機台座２００とセルホルダ１２０とが組み付けられた状態においてそれぞれ総プラス端子バスバ１６４及び総マイナス端子バスバ１６５とに接触することにより、電気的な接続が担保される。総プラス銅バスバ２８５及び総マイナス銅バスバ２８６は、その先端に、補機台座２００とセルホルダ１２０とが組み付けられた状態において、セルホルダ１２０に設けられたねじ穴１２３ｂに対応する位置に、それぞれねじ穴２８５ａ及び２８６ａを有する。 The terminal 240a of the fusible link 240 is connected to a total plus copper bus bar 285 for electrical connection to the total plus terminal bus bar 164 of the battery module group. The GND terminal 270 is connected to a total minus copper bus bar 286 for electrically connecting to the total minus terminal bus bar 165 of the battery module group. The total plus copper bus bar 285 and the total minus copper bus bar 286 extend to the lower surface side along the side surfaces 200b and 200d, respectively, and the tips of the total plus copper bus bar 286 and the auxiliary base 200 and the cell holder 120 are assembled to the total plus terminal, respectively. Contact with the bus bar 164 and the total negative terminal bus bar 165 ensures electrical connection. The total plus copper bus bar 285 and the total minus copper bus bar 286 are respectively screw holes at positions corresponding to the screw holes 123b provided in the cell holder 120 in a state where the auxiliary machine base 200 and the cell holder 120 are assembled at the tips. 285a and 286a.
　銅バスバ２８０乃至２８４及び総プラス銅バスバ２８５は、上面側からスタッド２０３にねじ嵌合されるナット２９０により、ＭＯＳＦＥＴ２１０、リレー２２０、電流センサ２３０及びヒュージブルリンク２４０とともに補機台座２００に固定される。また、リレー２２０は、端子２２０ａ及び端子２２０ｂとは異なる位置に設けられた開口２２１をスタッド２０３に通して、上面側からナット２９０をスタッド２０３にねじ嵌合することによっても、補機台座２００に固定される。 The copper bus bars 280 to 284 and the total plus copper bus bar 285 are fixed to the auxiliary machine base 200 together with the MOSFET 210, the relay 220, the current sensor 230 and the fusible link 240 by a nut 290 screwed to the stud 203 from the upper surface side. . The relay 220 can also be attached to the auxiliary machine base 200 by passing an opening 221 provided at a position different from the terminals 220a and 220b through the stud 203 and screwing the nut 290 into the stud 203 from the upper surface side. Fixed.
　なお、各銅バスバは、上述したように、補機台座２００に設けられたリブ２０２により、互いに接触しないように配置されている。また、リレー２２０の端子２２０ａ及び端子２２０ｂに設けられた隔壁２２２も、各銅バスバが接触しないように絶縁する機能を有する。 Note that, as described above, the copper bus bars are arranged so as not to contact each other by the ribs 202 provided on the auxiliary machine base 200. Moreover, the partition 222 provided in the terminal 220a and the terminal 220b of the relay 220 also has a function of insulating the copper bus bars so that they do not contact each other.
　補機台座２００は、側面２００ｂ及び２００ｄの端部に、セルホルダ１２０と補機台座２００とをねじ留めにより固定するためのねじ穴２０４ａを有するねじ穴形成部２０４を備える。ねじ穴２０４ａは、セルホルダ１２０と補機台座２００とが組み付けられた状態においてセルホルダ１２０に設けられたねじ穴１２３ａに対応する位置に設けられる。 The auxiliary machine pedestal 200 includes a screw hole forming part 204 having screw holes 204a for fixing the cell holder 120 and the auxiliary machine pedestal 200 by screwing at the ends of the side surfaces 200b and 200d. The screw hole 204a is provided at a position corresponding to the screw hole 123a provided in the cell holder 120 in a state where the cell holder 120 and the auxiliary machine base 200 are assembled.
　また、補機台座２００は、側面２００ａの総プラス銅バスバ２８５を取り付けるスタッド２０３の近傍と、側面２００ｃの総マイナス銅バスバ２８６を取り付けるＧＮＤ端子２７０の近傍とに、係合爪２０５を備える。係合爪２０５は、セルホルダ１２０と補機台座２００とが組み付けられた状態において、係合孔１２９ａに対応する位置に設けられる。係合爪２０５は、側面２００ａ及び２００ｃの外部側から下面方向に延びており、係合爪２０５の先端部は、側面視において楔形状になっている。係合爪２０５の先端部が係合孔１２９ａに嵌め込まれることにより、係合爪２０５と係合孔１２９ａとが係合する。 Further, the auxiliary machine base 200 includes engagement claws 205 in the vicinity of the stud 203 to which the total plus copper bus bar 285 on the side surface 200a is attached and in the vicinity of the GND terminal 270 to which the total minus copper bus bar 286 on the side surface 200c is attached. The engagement claw 205 is provided at a position corresponding to the engagement hole 129a in a state where the cell holder 120 and the auxiliary machine base 200 are assembled. The engaging claw 205 extends from the outside of the side surfaces 200a and 200c toward the lower surface, and the front end of the engaging claw 205 has a wedge shape when viewed from the side. When the tip of the engagement claw 205 is fitted into the engagement hole 129a, the engagement claw 205 and the engagement hole 129a are engaged.
　ここで、補機モジュール群の組立について説明する。補機モジュール群の組立では、まず、各部品（つまり、ＭＯＳＦＥＴ２１０、リレー２２０、電流センサ２３０、ヒュージブルリンク２４０）及び銅バスバ（つまり、銅バスバ２８０乃至２８４、総プラス銅バスバ２８５及び総マイナス銅バスバ２８６）が、補機台座２００の載置面２０１のスタッド２０３、ＳＳＧ端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０に、通して配置される。そして、スタッド２０３、ＳＳＧ端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０を上面側からナット２９０をねじ嵌合することにより、補機モジュール群の組立が行われる。 Here, the assembly of the accessory module group will be described. In the assembly of the accessory module group, first, each component (ie, MOSFET 210, relay 220, current sensor 230, fusible link 240) and copper bus bar (ie, copper bus bar 280 to 284, total plus copper bus bar 285, and total minus copper). The bus bar 286) is disposed through the stud 203, the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 of the mounting surface 201 of the auxiliary machine base 200. Then, the auxiliary machine module group is assembled by screwing the nut 290 into the stud 203, the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 from the upper surface side.
　次に、上部ケースについて説明する。上部ケース３００は、図１６に示すように、組電池１００を組み立てた際に、それぞれＳＳＧ端子２５０、ＬＯＡＤ端子２６０及びＧＮＤ端子２７０を上部ケース３００から外部に露出させるための３つの開口３１０ａ、３１０ｂ及び３１０ｃを有する。 Next, the upper case will be described. As shown in FIG. 16, the upper case 300 has three openings 310a and 310b for exposing the SSG terminal 250, the LOAD terminal 260, and the GND terminal 270 from the upper case 300 when the assembled battery 100 is assembled. And 310c.
　また、上部ケース３００は、４つの側面の下面側にセルホルダ１２０に係合するための係合爪３２０を備える。係合爪３２０は、セルホルダ１２０と上部ケース３００とが組み付けられた状態において、係合孔１２９ｂに対応する位置に設けられる。係合爪３２０は、各側面の外部側から下面方向に延びており、係合爪３２０の先端部は、側面視において楔形状になっている。係合爪３２０の先端部が係合孔１２９ｂに嵌め込まれることにより、係合爪３２０と係合孔１２９ｂとが係合する。 Further, the upper case 300 includes engagement claws 320 for engaging the cell holder 120 on the lower surfaces of the four side surfaces. The engagement claw 320 is provided at a position corresponding to the engagement hole 129b in a state where the cell holder 120 and the upper case 300 are assembled. The engaging claw 320 extends in the lower surface direction from the outer side of each side surface, and the front end portion of the engaging claw 320 has a wedge shape in a side view. When the tip of the engagement claw 320 is fitted into the engagement hole 129b, the engagement claw 320 and the engagement hole 129b are engaged.
　また、上部ケース３００は、セルホルダ１２０と上部ケース３００とが組み付けられた状態において、総プラス銅バスバ２８５及び総マイナス銅バスバ２８６を保護するためのバスバ保護部３３０を備える。 The upper case 300 includes a bus bar protection unit 330 for protecting the total plus copper bus bar 285 and the total minus copper bus bar 286 in a state where the cell holder 120 and the upper case 300 are assembled.
　次に、組電池１００全体の組立について説明する。まず、電池モジュール群と補機モジュール群との組付けについて説明する。電池モジュール群と補機モジュール群との組付けは、セルホルダ１２０と補機台座２００との組付けにより実現される。 Next, the assembly of the assembled battery 100 will be described. First, assembly of the battery module group and the accessory module group will be described. The assembly of the battery module group and the accessory module group is realized by the assembly of the cell holder 120 and the accessory base 200.
　セルホルダ１２０と補機台座２００とは、係合爪２０５を係合孔１２９ａに嵌め込んで係合させることにより、組み付けられる。また、セルホルダ１２０と補機台座２００とは、補機台座２００がセルホルダ１２０に載置された状態において、ボルト３４０を、側面２００ｂ及び２００ｄの外部側から、ねじ穴２８５ａ又はねじ穴２８６ａと、ねじ穴１６６ａとを貫通させて、ねじ穴１２３ｂにねじ留めされることにより組み付けられる。つまり、ボルト３４０により、総プラス銅バスバ２８５及び総マイナス銅バスバ２８６を介して、間接的にセルホルダ１２０と補機台座２００とが組み付けられる。このとき、総プラス銅バスバ２８５及び総マイナス銅バスバ２８６に沿って設けられた支持部２０６は、廻り止めの機能を有する。 The cell holder 120 and the auxiliary machine base 200 are assembled by fitting the engaging claws 205 into the engaging holes 129a and engaging them. In addition, the cell holder 120 and the auxiliary machine pedestal 200 are configured such that, in a state where the auxiliary machine pedestal 200 is placed on the cell holder 120, the bolt 340 is screwed into the screw hole 285a or the screw hole 286a from the outside of the side surfaces 200b and 200d. It is assembled by passing through the hole 166a and screwed into the screw hole 123b. That is, the cell holder 120 and the auxiliary machine base 200 are indirectly assembled by the bolt 340 via the total plus copper bus bar 285 and the total minus copper bus bar 286. At this time, the support portion 206 provided along the total plus copper bus bar 285 and the total minus copper bus bar 286 has a function of preventing rotation.
　このように、係合による組付けと、ボルト３４０による組付けとの双方の手段で組付けを行うことにより、一方で組付けを行う場合と比較して、より堅牢な組付けを実現できる。 Thus, by performing assembly by both means of engagement and assembly by the bolt 340, a more robust assembly can be realized as compared with the case of assembly on the other hand.
　また、セルホルダ１２０と補機台座２００とは、補機台座２００にセルホルダ１２０を載置した状態において、図１７に示すように、ボルト３５０を、上面側からねじ穴２０４ａを貫通させて、ねじ穴１２３ａにねじ留めすることにより、組み付けられる。 In addition, the cell holder 120 and the auxiliary machine base 200 are formed so that, in the state where the cell holder 120 is placed on the auxiliary machine base 200, the bolt 350 is inserted through the screw hole 204a from the upper surface side as shown in FIG. It is assembled by screwing to 123a.
　本実施形態の電池モジュール群と補機モジュール群とは、上記のように組み付けられるため、上面視において略矩形の補機台座２００の四隅において、電池モジュール群と補機モジュール群とが固定される。これにより、堅牢な組付けを実現できる。 Since the battery module group and the auxiliary machine module group of the present embodiment are assembled as described above, the battery module group and the auxiliary machine module group are fixed at the four corners of the substantially rectangular auxiliary machine base 200 in a top view. . Thereby, a robust assembly can be realized.
　次に、上部ケース３００の組付けについて説明する。上部ケース３００は、係合爪３２０をセルホルダ１２０の係合孔１２９ｂに嵌め込んで係合させることにより、セルホルダ１２０と係合される。このようにして、セルホルダ１２０に上部ケース３００が係合されることにより、組電池１００全体の組立が完了する。 Next, the assembly of the upper case 300 will be described. The upper case 300 is engaged with the cell holder 120 by engaging the engagement claw 320 with the engagement hole 129 b of the cell holder 120. Thus, the assembly of the assembled battery 100 is completed by engaging the upper case 300 with the cell holder 120.
　このように、本発明の一実施形態による補機台座２００によれば、ＧＮＤ端子２７０は、ＳＳＧ端子２５０及びＬＯＡＤ端子２６０と異なる段に設けられる。このため、ＧＮＤ端子２７０の識別性が高まり、組電池１００を車両に搭載する際等における誤配線を防止しやすくなる。 As described above, according to the auxiliary machine base 200 according to the embodiment of the present invention, the GND terminal 270 is provided in a different stage from the SSG terminal 250 and the LOAD terminal 260. For this reason, the distinguishability of the GND terminal 270 increases, and it becomes easy to prevent erroneous wiring when the assembled battery 100 is mounted on a vehicle.
　また本発明の一実施形態による補機台座２００によれば、ＧＮＤ端子２７０は、ＳＳＧ端子２５０及びＬＯＡＤ端子２６０よりも低い段に設けられる。このため、ＧＮＤ端子２７０がＳＳＧ端子２５０及びＬＯＡＤ端子２６０よりも高い段に設けられる場合に比べて総マイナス銅バスバ２８６を短くすることができ、総マイナス銅バスバ２８６に過剰な（所定値以上の）応力が掛かることを防ぐことができる。 Further, according to the auxiliary machine base 200 according to the embodiment of the present invention, the GND terminal 270 is provided at a lower level than the SSG terminal 250 and the LOAD terminal 260. For this reason, the total minus copper bus bar 286 can be shortened as compared with the case where the GND terminal 270 is provided at a stage higher than the SSG terminal 250 and the LOAD terminal 260, and the total minus copper bus bar 286 is excessive (over a predetermined value or more). ) Stress can be prevented.
　また本発明の一実施形態による補機台座２００によれば、ＧＮＤ端子２７０とＳＳＧ端子２５０とＬＯＡＤ端子２６０とは、同一側面に接する縁部に設けられる。このため、同一方向からの作業が可能であり、配線が容易である。また、配線を自動化しやすい。 In addition, according to the auxiliary machine base 200 according to the embodiment of the present invention, the GND terminal 270, the SSG terminal 250, and the LOAD terminal 260 are provided at the edge that contacts the same side surface. For this reason, work from the same direction is possible, and wiring is easy. Also, wiring is easy to automate.
　また本発明の一実施形態による補機台座２００によれば、ＧＮＤ端子２７０とＳＳＧ端子２５０とＬＯＡＤ端子２６０とは、補機台座２００の載置面から上向きに設けられる。このため、ハーネス締結のための配線を容易に行うことができる。 Further, according to the auxiliary machine base 200 according to the embodiment of the present invention, the GND terminal 270, the SSG terminal 250, and the LOAD terminal 260 are provided upward from the mounting surface of the auxiliary machine base 200. For this reason, the wiring for harness fastening can be performed easily.
　また本発明の一実施形態による補機台座２００によれば、複数の部品も載置面２０１から上向きに設けられる。このため、自動化等により補機台座２００への各部品の取り付けがしやすく仮固定も可能となるため、補機モジュール及び組電池１００の生産性が向上する。 Further, according to the auxiliary machine base 200 according to the embodiment of the present invention, a plurality of components are also provided upward from the placement surface 201. For this reason, it is easy to attach each part to the auxiliary machine base 200 by automation or the like, and temporary fixing is also possible, so that the productivity of the auxiliary machine module and the assembled battery 100 is improved.
　１００　組電池
　１１０　下部ケース
　１１０ａ　空間
　１１１　底面
　１１２、１１２ａ、１１２ｂ、１１２ｃ、１１２ｄ、１２１ａ、１２１ｂ、１２１ｃ、１２１ｄ、２００ａ、２００ｂ、２００ｃ、２００ｄ　側面
　１１３、１２４ａ、１２４ｂ、２２１、３１０ａ、３１０ｂ、３１０ｃ　開口
　１１４　取付機構
　１１５、１２９ａ、１２９ｂ　係合孔
　１１６　ガイド
　１２０　セルホルダ
　１２１　外周枠
　１２１ｅ　係合挿入部
　１２２　保持蓋
　１２２ａ　フレーム部分
　１２３、１２６、２０４　ねじ穴形成部
　１２３ａ、１２３ｂ、１２６ａ、１６３ａ、１６６ａ、２０４ａ、２８５ａ、２８６ａ　ねじ穴
　１２３ｃ　バスバ支持部
　１２５　ビード
　１２７、２０２　リブ
　１２８、２０５、３２０　係合爪
　１３０　第１の二次電池
　１４０　ＬＢＣ（バッテリコントローラ）
　１５０　電池セル
　１５１　キャップ面
　１５２、２１０ａ、２２０ａ、２３０ａ、２４０ａ　端子
　１５３、２１０ｂ、２２０ｂ、２３０ｂ、２４０ｂ　端子
　１５４　安全弁
　１６０　セル間バスバ
　１６１　凸部
　１６２　端子接続部
　１６２ａ　溶接用開口
　１６３　電圧センサ取付端子
　１６４　総プラス端子バスバ
　１６５　総マイナス端子バスバ
　１６６　外部接続部
　２００　補機台座
　２０１　載置面
　２０１ａ、２０１ｂ、２０１ｃ、２０１ｄ　領域
　２０３　スタッド
　２０６　支持部
　２１０　ＭＯＳＦＥＴ
　２２０　リレー
　２２２　隔壁
　２３０　電流センサ
　２４０　ヒュージブルリンク
　２５０　ＳＳＧ端子
　２６０　ＬＯＡＤ端子
　２７０　ＧＮＤ端子
　２５０ａ、２６０ａ、２７０ａ　段
　２８０、２８１、２８２、２８３、２８４　銅バスバ
　２８５　総プラス銅バスバ
　２８６　総マイナス銅バスバ
　２９０　ナット
　３００　上部ケース
　３３０　バスバ保護部
　３４０、３５０　ボルト
　４００　電源システム
　４１０　オルタネータ
　４２０　スタータ
　４３０　第２の二次電池
　４４０　負荷
　４５０　スイッチ
　４６０　制御部 100 assembled battery 110 lower case 110a space 111 bottom surface 112, 112a, 112b, 112c, 112d, 121a, 121b, 121c, 121d, 200a, 200b, 200c, 200d side surface 113, 124a, 124b, 221, 310a, 310b, 310c opening 114 Mounting mechanism 115, 129a, 129b Engagement hole 116 Guide 120 Cell holder 121 Outer peripheral frame 121e Engagement insertion part 122 Holding lid 122a Frame part 123, 126, 204 Screw hole formation part 123a, 123b, 126a, 163a, 166a, 204a, 285a, 286a Screw hole 123c Bus bar support part 125 Bead 127, 202 Rib 128, 205, 320 Engagement claw 130 First secondary battery 140 LBC (battery controller)
150 battery cell 151 cap surface 152, 210a, 220a, 230a, 240a terminal 153, 210b, 220b, 230b, 240b terminal 154 safety valve 160 inter-cell bus bar 161 convex part 162 terminal connection part 162a welding opening 163 voltage sensor attachment terminal 164 total Positive terminal bus bar 165 Total negative terminal bus bar 166 External connection part 200 Auxiliary machine base 201 Placement surface 201a, 201b, 201c, 201d Area 203 Stud 206 Support part 210 MOSFET
220 Relay 222 Bulkhead 230 Current sensor 240 Fusible link 250 SSG terminal 260 LOAD terminal 270 GND terminal 250a, 260a, 270a Stage 280, 281, 282, 283, 284 Copper bus bar 285 Total plus copper bus bar 286 Total minus copper bus bar 290 Nut 300 Upper case 330 Bus bar protection unit 340, 350 volts 400 Power supply system 410 Alternator 420 Starter 430 Second secondary battery 440 Load 450 Switch 460 Control unit

Claims (12)

  1. 　複数の部品が取り付けられ複数の段を有する台座と、１以上の電池セルとを有し、
    　前記台座は前記１以上の電池セルとオルタネータとの間の第１端子と、前記１以上の電池セルと負荷との間の第２端子と、接地のために使用される第３端子とを有し、
    　前記第３端子は、前記第１端子及び前記第２端子と異なる段に設けられる、組電池。     A pedestal having a plurality of steps to which a plurality of parts are attached and one or more battery cells
    The pedestal has a first terminal between the one or more battery cells and an alternator, a second terminal between the one or more battery cells and a load, and a third terminal used for grounding. And
    The assembled battery, wherein the third terminal is provided in a different stage from the first terminal and the second terminal.
  2. 　請求項１に記載の組電池において、
    　前記組電池はさらに、前記１以上の電池セルを保持するセルホルダを有し、
    　前記台座は、前記第３端子が設けられる載置面とは反対側で、前記第３端子に接続された総マイナスバスバを介してセルホルダと組み付けられ、
    　前記第３端子は、前記第１端子及び前記第２端子よりも低い段に設けられる、組電池。     The assembled battery according to claim 1,
    The assembled battery further includes a cell holder that holds the one or more battery cells,
    The pedestal is assembled with the cell holder via a total minus bus bar connected to the third terminal on the side opposite to the mounting surface on which the third terminal is provided,
    The assembled battery, wherein the third terminal is provided at a lower level than the first terminal and the second terminal.
  3. 　請求項１に記載の組電池において、
    　前記第３端子と前記第１端子と前記第２端子とは、同一側面に接する縁部に設けられる、組電池。     The assembled battery according to claim 1,
    The assembled battery, wherein the third terminal, the first terminal, and the second terminal are provided at an edge contacting the same side surface.
  4. 　請求項２に記載の組電池において、
    　前記第３端子と前記第１端子と前記第２端子とは、同一側面に接する縁部に設けられる、組電池。     The assembled battery according to claim 2,
    The assembled battery, wherein the third terminal, the first terminal, and the second terminal are provided at an edge contacting the same side surface.
  5. 　請求項１に記載の組電池において、
    　前記第３端子と前記第１端子と前記第２端子とは、前記台座の載置面から上向きに設けられる、組電池。     The assembled battery according to claim 1,
    The assembled battery, wherein the third terminal, the first terminal, and the second terminal are provided upward from a mounting surface of the pedestal.
  6. 　請求項２に記載の組電池において、
    　前記第３端子と前記第１端子と前記第２端子とは、前記台座の載置面から上向きに設けられる、組電池。     The assembled battery according to claim 2,
    The assembled battery, wherein the third terminal, the first terminal, and the second terminal are provided upward from a mounting surface of the pedestal.
  7. 　請求項３に記載の組電池において、
    　前記第３端子と前記第１端子と前記第２端子とは、前記台座の載置面から上向きに設けられる、組電池。     The assembled battery according to claim 3,
    The assembled battery, wherein the third terminal, the first terminal, and the second terminal are provided upward from a mounting surface of the pedestal.
  8. 　請求項４に記載の組電池において、
    　前記第３端子と前記第１端子と前記第２端子とは、前記台座の載置面から上向きに設けられる、組電池。     The assembled battery according to claim 4,
    The assembled battery, wherein the third terminal, the first terminal, and the second terminal are provided upward from a mounting surface of the pedestal.
  9. 　請求項５に記載の組電池において、
    　前記複数の部品も前記載置面から上向きに設けられる、組電池。     The assembled battery according to claim 5,
    The assembled battery, wherein the plurality of components are also provided upward from the mounting surface.
  10. 　請求項６に記載の組電池において、
    　前記複数の部品も前記載置面から上向きに設けられる、組電池。     The assembled battery according to claim 6,
    The assembled battery, wherein the plurality of components are also provided upward from the mounting surface.
  11. 　請求項７に記載の組電池において、
    　前記複数の部品も前記載置面から上向きに設けられる、組電池。     The assembled battery according to claim 7,
    The assembled battery, wherein the plurality of components are also provided upward from the mounting surface.
  12. 　請求項８に記載の組電池において、
    　前記複数の部品も前記載置面から上向きに設けられる、組電池。     The assembled battery according to claim 8,
    The assembled battery, wherein the plurality of components are also provided upward from the mounting surface.
PCT/JP2016/087673 2016-01-19 2016-12-16 Assembled battery WO2017126272A1 (en)

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