WO2018008478A1 - Batterie assemblée et dispositif de source d'énergie - Google Patents

Batterie assemblée et dispositif de source d'énergie Download PDF

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Publication number
WO2018008478A1
WO2018008478A1 PCT/JP2017/023614 JP2017023614W WO2018008478A1 WO 2018008478 A1 WO2018008478 A1 WO 2018008478A1 JP 2017023614 W JP2017023614 W JP 2017023614W WO 2018008478 A1 WO2018008478 A1 WO 2018008478A1
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WO
WIPO (PCT)
Prior art keywords
cell
bus bar
inter
battery
terminal
Prior art date
Application number
PCT/JP2017/023614
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English (en)
Japanese (ja)
Inventor
季之 本橋
由和 高松
貴之 平瀬
Original Assignee
カルソニックカンセイ株式会社
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Filing date
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Publication of WO2018008478A1 publication Critical patent/WO2018008478A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6553—Terminals or leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch 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
    • H01M50/249—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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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 and a power supply device.
  • Patent Document 1 discloses an assembled battery in which a control circuit board is mounted above a battery module including a plurality of battery cells.
  • the bus bar between the electrodes connecting the electrodes of the battery cells is a mixture of those covered by the control circuit board and those not covered in the top view. Yes. Therefore, the location where the heat dissipation in the assembled battery at the time of charging / discharging becomes low may occur depending on the positional relationship between the bus bar and the control circuit board.
  • An object of the present invention made in view of such problems is to provide an assembled battery and a power supply device capable of improving heat dissipation.
  • an assembled battery includes: A plurality of battery cells; A cell holder for holding the plurality of battery cells in a lower case; An inter-cell bus bar that is welded to the electrode terminals of the plurality of battery cells on the upper surface of the cell holder and electrically connects the electrode terminals of different battery cells among the plurality of battery cells; A secondary battery controller board fixed to the cell holder by being fastened together with a fastening point of the inter-cell bus bar from the upper surface side, A welded portion of each inter-cell bus bar is exposed from the secondary battery controller board in a top view.
  • a power supply device includes the assembled battery.
  • the assembled battery of one embodiment of the present invention since at least a part of all the inter-cell bus bars is exposed from the secondary battery controller board in a top view, it is possible to ensure the heat dissipation of the inter-cell bus bars. It is possible to improve heat dissipation as a whole assembled battery. Since the weld portion of the inter-cell bus bar is exposed from the secondary battery controller board in a top view, the operator visually confirms whether the inter-cell bus bar is properly welded during the assembled battery manufacturing process. Can be easily confirmed.
  • the power supply device of one embodiment of the present invention since at least a part of all the inter-cell bus bars is exposed from the secondary battery controller board in a top view, it is possible to ensure the heat dissipation of the inter-cell bus bars. It is possible to improve heat dissipation as a whole assembled battery.
  • FIG. 7A to the lower case of FIG. It is an expansion appearance perspective view of a bus bar between cells attached to a cell holder. 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. It is a figure which shows typically the state before and behind the engagement nail
  • FIG. 2 is a side view of a state where each component such as a relay is placed on the auxiliary machine base in FIG. 1. It is an external appearance perspective view of the auxiliary machine base which shows the state which attached each component and the bus bar. 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. It is a figure which shows the mode of the assembly of the whole assembled battery. It is a figure for demonstrating the mode of an assembly
  • FIG. 1 is an external perspective view of an assembled battery 100 according to an embodiment.
  • FIG. 1 is an external perspective view showing a state where the upper case 300 of the assembled battery 100 is removed.
  • the assembled battery 100 includes a lower case 110 that houses the battery cell 150, a cell holder 120 that holds the battery cell 150 housed in the lower case 110 on the side to which the upper case 300 is attached (hereinafter also referred to as "upper surface side"). Is provided.
  • the assembled battery 100 includes an auxiliary machine base 200 attached to the upper surface side of the cell holder 120, various parts attached to the auxiliary machine base 200, and an upper case 300 not shown in FIG. 1 for protecting the various parts. With.
  • 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 of an SSG terminal 250, a LOAD terminal 260, and a GND terminal 270 that protrude to the outside of the upper case 300 with the upper case 300 attached.
  • 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 an 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 an electric motor.
  • the use of the assembled battery 100 is not limited to the vehicle.
  • FIG. 2 is a functional block diagram showing an outline of the power supply system 400 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 secondary 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 connected to the alternator 410.
  • the LOAD terminal 260 is connected to the load 440.
  • 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, for example, a lithium ion battery, but may be another secondary battery such as a nickel metal hydride battery.
  • the first secondary battery 130 is configured such that the positive electrode side is connected to the fusible link 240 and the negative electrode side is grounded via the 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 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 by adjusting the output voltage with a regulator. The alternator 410 can generate power by regeneration when the vehicle is decelerated or the like. 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 100 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. 7A is an external perspective view of the cell holder 120 from the upper surface side.
  • FIG. 7B is an external perspective view of the cell holder 120 from the side opposite to the upper surface side (hereinafter also referred to as “lower surface side”).
  • FIG. 8 is an external perspective view showing a state where the cell holder 120 is attached to the lower case 110.
  • FIG. 5 is an external perspective view of the lower case 110.
  • FIG. 6 is a top view of the lower case 110.
  • FIG. 7A is an external perspective view of the cell holder 120 from the upper surface side.
  • FIG. 7B is an external perspective view of the cell holder 120 from the side opposite to the upper surface side (hereinafter also referred to as “lower surface side”).
  • FIG. 8 is an external perspective view showing a state where the cell
  • 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 illustrating a state before and after the engagement claw 205 of the cell holder 120 and the engagement hole 115 of the lower case 110 are engaged.
  • FIG. 12 is a top view of the cell holder 120 showing a state in which the substrate of the LBC 140 is fixed to the cell holder 120 by fastening together.
  • FIG. 13 is an external perspective view of the auxiliary machine base 200.
  • FIG. 14A is a side view of only the auxiliary machine base 200.
  • FIG. 14B is a side view of a state in which components such as the relay 220 are mounted on the auxiliary machine base 200.
  • FIG. 15 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. 16 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. 17 is a diagram illustrating how the assembled battery 100 is assembled as a whole.
  • FIG. 18 is a diagram for explaining how the battery module group and the accessory module group are assembled.
  • the assembled battery 100 is assembled by assembling the battery module group and the auxiliary machine module group, then assembling the battery module group and the auxiliary machine module group, and fixing the upper case 300.
  • 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.
  • LBC 140 are assembled.
  • LBC 140 is a substrate.
  • the LBC 140 is also referred to as an LBC substrate 140.
  • the battery cell 150 included in the assembled battery 100 has a substantially rectangular parallelepiped shape.
  • the assembled battery 100 of one embodiment accommodates five battery cells 150.
  • the number of battery cells 150 that can be accommodated in 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 shape of the attachment mechanism 114 and the position on the side surfaces 112b and 112d are appropriately determined according to 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 near the center and both ends on the opening 113 side.
  • 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 one 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, as in the embodiment, by arranging the battery cells 150 to be stacked in the direction along the side surfaces 112a and 112c, the battery cells 150 accommodated in the lower case 110 are stacked in the lower case 110. It becomes difficult to slip.
  • the position and size of the guide 116 are appropriately determined according to the shape and quantity 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.
  • the positive terminal 152 and the negative terminal 153 are provided near both ends of the cap surface 151 in the long side direction.
  • At the center of the cap surface 151 there is a safety valve 154 that is opened to discharge gas to the outside when gas is generated inside the battery cell 150 due to aging or thermal runaway or the pressure inside the battery cell 150 exceeds a predetermined value. 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.
  • 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 top view.
  • the cell holder 120 includes an outer peripheral frame 121 having a predetermined height, and a holding lid 122 that holds the battery cell 150 from the upper surface side with the cell holder 120 engaged with the lower case 110 inside the outer peripheral frame 121.
  • 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.
  • 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 has screw holes for screwing bus bars (that is, a total plus copper bus bar 285 and a total minus copper bus bar 286, which will be described later) to the cell holder 120 on the upper surfaces of the side surfaces 121b and 121d. 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 adjacent terminals of the positive electrode terminal 152 and the negative electrode terminal 153 that are exposed from the opening 124a and are aligned in a line are the cells 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. It is electrically connected by the intermediate 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.
  • 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 the screw hole 126a formed in the screw hole forming part 126 in a state where the voltage sensor attachment terminal 163 is disposed on the screw hole forming part 126.
  • 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.
  • 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 portion 166 has a screw hole 166a at a position corresponding to the screw hole 123b when attached to the outer peripheral frame 121.
  • the terminal connecting 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.
  • a bead 125 is provided. The bead 125 also serves to position 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 substrate 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 one 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 substrate 140 is mounted on the upper surface side of the cell holder 120 and is fastened together with the intercell bus bar 160 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, on the outer surface of the outer peripheral frame 121, the engagement insertion portion 121 e is formed so as to be recessed from other portions of the outer peripheral frame 121. As shown in FIG. 11, the engagement 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 the quantities of the engagement holes 115 and the engagement claws 128 are not limited to the example shown in the 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 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 300 are assembled.
  • the engagement hole 129b is not necessarily provided near the center of each of the side surfaces 121a, 121b, 121c, and 121d.
  • the engagement hole 129b may be provided at an arbitrary position as long as it can engage an upper case 300 described later.
  • the adhesive is any adhesive that can bond the battery cell 150 to the lower case 110 and the cell holder 120.
  • the adhesive may be, for example, an epoxy adhesive.
  • the adhesive may be applied to a part of the battery cell 150. For example, in the battery cell 150, the adhesive contacts the bottom lid 111 when the battery cell 150 is inserted into the lower case 110, and contacts the holding lid 122 when the cell holder 120 holds the battery cell 150 from the top surface side.
  • the adhesive may be applied to the surface on the opposite side of the cap surface 151 and the cap surface 151 in the battery cell 150.
  • the cap surface 151 has a positive terminal 152, a negative terminal 153, and a safety valve 154. Therefore, for example, the adhesive may be applied only to the peripheral edge in the longitudinal direction of the cap surface 151 so that the adhesive is not applied to the positive terminal 152, the negative terminal 153, and the safety valve 154.
  • FIG. 10 shows that adhesive is applied to a surface 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 battery cell 150 is held from the upper surface side by the cell holder 120. It is a figure which shows typically the adhesion position in the case of apply
  • 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. In FIG. 10, the area where the adhesive is applied is indicated by shading. 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. The battery cell 150 is bonded to the lower case 110 at the bottom surface 111.
  • the adhesive that is applied between the battery cell 150 and the bottom surface 111 of the lower case 110.
  • 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 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.
  • the engagement claw 128 of the cell holder 120 and the engagement hole 115 of the lower case 110 are engaged.
  • 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.
  • the LBC substrate 140 is attached to the holding lid 122. Thereby, the assembly of the battery module group is completed. As described above, the LBC substrate 140 is attached to the holding lid 122 by, for example, fastening together with the inter-cell bus bar 160.
  • FIG. 12 is a top view of the cell holder 120 showing a state in which the LBC substrate 140 is fixed to the cell holder 120 by tightening.
  • the LBC substrate 140 is shown in a transparent state for explanation.
  • each inter-cell bus bar 160 includes two fastening points. By being fastened at the two fastening points, the inter-cell bus bar 160 is fixed to the cell holder 120 together with the LBC substrate 140.
  • the bolt that fastens the inter-cell bus bar 160 and the LBC substrate 140 together is preferably a loosening prevention bolt such as an SL bolt or a seal bolt.
  • all four inter-cell bus bars 160 have the same shape.
  • the two fastening points of the inter-cell bus bar 160 are arranged at positions symmetrical with respect to a bisector (indicated by a broken line in FIG. 12) of two electrode terminals that are electrically connected in a top view.
  • a bisector indicated by a broken line in FIG. 12
  • at least one of the plurality of fastening points is joined to the LBC substrate 140 as a voltage detection line.
  • the welded portion of the inter-cell bus bar 160 that is, the welding opening 162a is exposed from the LBC substrate 140 in a top view. Since the welded portion is exposed from the LBC substrate 140, in the manufacturing process of the assembled battery 100, an operator can easily visually confirm whether the inter-cell bus bar 160 is appropriately welded.
  • the heat dissipation of the inter-cell bus bar 160 is improved by setting the area of the portion exposed from the LBC substrate 140 in the inter-cell bus bar 160 to be half or more of the area in the top view.
  • the ratio of the area of the exposed part from the LBC substrate 140 to the area of the inter-cell bus bar 160 in the top view of the inter-cell bus bar 160 is the same.
  • the ratio of the area covered by the LBC substrate 140 is the same as the area of the inter-cell bus bar 160 in a top view.
  • the ratio of the area of the exposed portion from the LBC substrate 140 to the area of the inter-cell bus bar 160 in a top view may not necessarily be completely the same between the inter-cell bus bars 160.
  • the ratio of the area of the exposed portion from the LBC substrate 140 to the area of the inter-cell bus bar 160 in a top view may be substantially the same.
  • the ratio of the area of the exposed portion is substantially the same includes the range of the area ratio in which the heat dissipation between the inter-cell bus bars 160 is within a predetermined range.
  • the positional relationship between the total positive terminal bus bar 164 and the total negative terminal bus bar 165 and the LBC substrate 140 can be the same as the positional relationship between the inter-cell bus bar 160 and the LBC substrate 140.
  • 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 in the vicinity of the side surface 200a.
  • MOSFET 210 is placed in the vicinity of side surface 200b.
  • Relay 220 is placed in the vicinity of side surface 200c.
  • a fusible link 240 is placed in the vicinity of the side surface 200d.
  • the mounting surface 201 is formed with unevenness according to the position where the MOSFET 210, the relay 220, the current sensor 230 and the fusible link 240 are mounted.
  • the rigidity of the mounting surface 201 is higher than the rigidity when there is no unevenness due to the unevenness.
  • the unevenness of the mounting surface 201 includes an area 201c where the relay 220 is mounted, an area 201a where the current sensor 230 is mounted, and an area 201b where the MOSFET 210 is mounted. And it forms so that it may become a high position when the assembled battery 100 is assembled compared with the area
  • the unevenness of the placement surface 201 is formed such that the region 201d where the fusible link 240 is placed is at a higher position when the assembled battery 100 is assembled than the regions 201a and 201b.
  • 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 arranged at a position lower than the relay 220 in the auxiliary machine base 200. The current sensor 230 that is thicker than the fusible link 240 is also disposed at a lower position than the relay 220.
  • 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 a 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 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 also extend upward from the placement surface 201 and function as studs.
  • 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 to match the connection opening provided at each terminal of the current sensor 230, MOSFET 210, relay 220, and fusible link 240.
  • the current sensor 230, the MOSFET 210, the relay 220, and the fusible link 240 are attached to the auxiliary machine base 200 by passing the stud 203 from the upper surface side to the terminal connection opening.
  • the current sensor 230, the MOSFET 210, the relay 220, and the fusible link 240 are attached to the auxiliary machine base 200 by passing the stud 203 from the upper surface side to the terminal connection opening.
  • the GND terminal 270 is provided at a position lower than the SSG terminal 250 and the LOAD terminal 260.
  • the distinguishability of the GND terminal 270 increases. Therefore, it becomes easy to prevent erroneous wiring when the assembled battery 100 is mounted on a vehicle.
  • 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.
  • the other terminal 220 b of relay 220 is electrically connected to SSG terminal 250 via copper bus bars 282 and 283.
  • the 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.
  • a total minus copper bus bar 286 for electrical connection 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. The tips of the total plus copper bus bar 285 and the total minus copper bus bar 286 come into contact with the total plus terminal bus bar 164 and the total minus terminal bus bar 165, respectively, in a state where the auxiliary machine base 200 and the cell holder 120 are assembled.
  • 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 is also fixed 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.
  • 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 partitions 222 provided at the terminals 220a and 220b of the relay 220 also have a function of insulating the copper bus bars so that they do not come into contact with 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 engaging 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 in the lower surface direction from the outside of the side surfaces 200a and 200c.
  • the tip 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 to the outside 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.
  • the tip of the engaging claw 320 has a wedge shape when viewed from the side. 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.
  • 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 in which the auxiliary machine pedestal 200 is placed on the cell holder 120, the bolt 340 is connected to the screw hole 285a or the screw hole 286a and the screw hole 166a from the outside of the side surfaces 200b and 200d. And is assembled by being 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 pedestal 200 are formed by passing the bolt 350 through the screw hole 204 a from the upper surface side in the state where the cell holder 120 is placed on the auxiliary machine pedestal 200, and It is assembled by screwing.
  • the battery module group and the auxiliary machine module group 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 is 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 assembled battery 100 can ensure the heat dissipation of all the inter-cell bus bars 160, and can improve the heat dissipation of the assembled battery 100 as a whole. By improving the heat dissipation, the battery pack 100 can have a long life. Since the assembled battery 100 can reduce the possibility of contact between the LBC substrate 140 and the inter-cell bus bar 160 that is a metal part, the risk of a short circuit can be reduced, and insulation can be easily ensured.
  • the welded portion of the inter-cell bus bar 160 is exposed from the LBC substrate 140 in a top view. Therefore, in the manufacturing process of the assembled battery 100, the operator can easily visually confirm whether the inter-cell bus bar 160 is properly welded.
  • the assembled battery 100 since more than half of the area of the inter-cell bus bar 160 in the top view is exposed from the LBC substrate 140, compared to the case where a larger area is covered by the LBC substrate 140, The heat dissipation of the inter-cell bus bar 160 is improved.
  • the ratio of the area of the exposed portion from the LBC substrate 140 to the area of the inter-cell bus bar 160 in a top view is the same. Therefore, variation in heat dissipation between the inter-cell bus bars 160 can be suppressed, so that variation in temperature of each battery cell 150 can be suppressed, and as a result, variation in deterioration of the battery cell 150 can be easily suppressed.
  • each inter-cell bus bar 160 is fastened at two fastening points. Therefore, in the battery pack 100, each battery cell 150 is supported by bolts at all fastening points. Thereby, the support strength of the battery cell 150 improves. As a result, long-term reliability of the assembled battery 100 is easily ensured.
  • inter-cell bus bar 160 the parts (inter-cell bus bar 160) can be shared.
  • the two fastening points of the inter-cell bus bar 160 are arranged at positions symmetrical with respect to the bisector of the two electrode terminals that are electrically connected in a top view. At least one of the plurality of fastening points is joined to the LBC substrate 140 as a voltage detection line. Therefore, the assembled battery 100 can detect the cell voltage of the battery cell 150 at any of the fastening points in each inter-cell bus bar 160.
  • each means can be rearranged so as not to be logically contradictory, and a plurality of means can be combined into one or divided.
  • the assembled battery 100 has been described as including five battery cells 150.
  • the number of battery cells 150 is not limited to five.
  • the number of inter-cell bus bars 160 provided in the assembled battery 100 is appropriately determined according to the number of battery cells 150 included in the assembled battery 100.
  • the number of fastening points can be any number of two or more in each inter-cell bus bar 160.
  • the support strength of the battery cell 150 can be improved as the number of fastening points increases.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention concerne une batterie assemblée et un dispositif de source d'énergie dans lesquels la dissipation de chaleur peut être améliorée. Cette batterie assemblée (100) comprend : une pluralité de cellules de batterie (150) ; un support de cellule (120) permettant de maintenir la pluralité de cellules de batterie (150) dans un boîtier inférieur (110) ; des barres omnibus inter-cellules (160), chacune étant soudée, sur la surface supérieure du support de cellule (120), à des bornes d'électrode à partir de la pluralité de cellules de batterie (150), et connectant électriquement les unes aux autres les bornes d'électrode de différentes cellules de batterie (150) parmi la pluralité de cellules de batterie (150) ; et une plaque de base de contrôleur de batterie secondaire (140) fixée à partir du côté de sa surface supérieure à chaque point de fixation de chacune des barres omnibus inter-cellules (160) afin d'être fixée sur le support de cellules (120). Dans une vue de dessus, la partie soudée de chacune des barres omnibus inter-cellules (160) est exposée à partir de la plaque de base de contrôleur de batterie secondaire (140).
PCT/JP2017/023614 2016-07-07 2017-06-27 Batterie assemblée et dispositif de source d'énergie WO2018008478A1 (fr)

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JP2016135369A JP2018006276A (ja) 2016-07-07 2016-07-07 組電池及び電源装置

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JP7155528B2 (ja) * 2018-02-08 2022-10-19 株式会社デンソー 電池パック
JP2019192418A (ja) * 2018-04-20 2019-10-31 カルソニックカンセイ株式会社 組電池
JP2019192412A (ja) * 2018-04-20 2019-10-31 カルソニックカンセイ株式会社 組電池
JP7125855B2 (ja) * 2018-04-20 2022-08-25 マレリ株式会社 組電池
JP7229681B2 (ja) * 2018-07-02 2023-02-28 本田技研工業株式会社 バッテリモジュール
JP7133491B2 (ja) * 2019-01-31 2022-09-08 マレリ株式会社 組電池及び塗布方法

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Publication number Priority date Publication date Assignee Title
JP2009105010A (ja) * 2007-10-25 2009-05-14 Honda Motor Co Ltd 蓄電装置
WO2013031613A1 (fr) * 2011-08-26 2013-03-07 三洋電機株式会社 Dispositif d'alimentation électrique ainsi que véhicule équipé de celui-ci, et dispositif de stockage
JP2015115190A (ja) * 2013-12-11 2015-06-22 三菱自動車工業株式会社 組電池
JP2015187914A (ja) * 2012-08-09 2015-10-29 三洋電機株式会社 電源装置及びこれを備える電動車両並びに蓄電装置
JP2015210895A (ja) * 2014-04-24 2015-11-24 株式会社東芝 組電池モジュール

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009105010A (ja) * 2007-10-25 2009-05-14 Honda Motor Co Ltd 蓄電装置
WO2013031613A1 (fr) * 2011-08-26 2013-03-07 三洋電機株式会社 Dispositif d'alimentation électrique ainsi que véhicule équipé de celui-ci, et dispositif de stockage
JP2015187914A (ja) * 2012-08-09 2015-10-29 三洋電機株式会社 電源装置及びこれを備える電動車両並びに蓄電装置
JP2015115190A (ja) * 2013-12-11 2015-06-22 三菱自動車工業株式会社 組電池
JP2015210895A (ja) * 2014-04-24 2015-11-24 株式会社東芝 組電池モジュール

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