WO2024029472A1 - Dispositif de stockage d'énergie - Google Patents

Dispositif de stockage d'énergie Download PDF

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Publication number
WO2024029472A1
WO2024029472A1 PCT/JP2023/027844 JP2023027844W WO2024029472A1 WO 2024029472 A1 WO2024029472 A1 WO 2024029472A1 JP 2023027844 W JP2023027844 W JP 2023027844W WO 2024029472 A1 WO2024029472 A1 WO 2024029472A1
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WO
WIPO (PCT)
Prior art keywords
power storage
detection
detection terminal
axis direction
terminal
Prior art date
Application number
PCT/JP2023/027844
Other languages
English (en)
Japanese (ja)
Inventor
智弘 川内
宏樹 東
卓 森口
強志 飛鷹
翔 米澤
喜弘 増田
恵太 浜川
Original Assignee
株式会社Ｇｓユアサ
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 株式会社Ｇｓユアサ filed Critical 株式会社Ｇｓユアサ
Publication of WO2024029472A1 publication Critical patent/WO2024029472A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals

Definitions

  • the present invention relates to a power storage device including a power storage element.
  • a power storage device in which a plurality of detection members (voltage detection wires) that detect the state (voltage, temperature, etc.) of the power storage elements (cells) are electrically connected to a plurality of power storage elements (single cells). (See Patent Document 1).
  • an object of the present invention is to provide a power storage device that can improve the workability of installing a detection member.
  • a power storage device includes a detection member having a detection terminal that detects a state of a power storage element and an electric wire led out from the detection terminal, and a holder that is disposed on the power storage element and holds the detection member.
  • the detection terminal has a detection part, a base part from which the electric wire is led out, an end part, an intermediate part located between the base part and the end part, and a protrusion part,
  • the base portion, the intermediate portion, and the end portion are arranged side by side, and the protruding portion protrudes from the side of the intermediate portion in a second direction intersecting the first direction
  • the holding member includes a claw portion arranged at a position overlapping the protruding portion when viewed in a third direction intersecting the first direction and the second direction, and a claw portion provided at a position adjacent to the end portion. It has a facing part.
  • FIG. 1 is a perspective view showing the appearance of a power storage device according to an embodiment.
  • FIG. 2 is an exploded perspective view showing each component when the power storage device according to the embodiment is disassembled.
  • FIG. 3 is a perspective view showing the configuration of the power storage element according to the embodiment.
  • FIG. 4 is an exploded perspective view showing a holding member, a plurality of bus bars, and a plurality of detection members according to the embodiment.
  • FIG. 5 is a perspective view showing a schematic configuration of the second mounting part and various members around it according to the embodiment.
  • FIG. 6 is a perspective view showing a schematic configuration of the voltage detection member according to the embodiment.
  • FIG. 7 is a perspective view showing a schematic configuration of the second attachment part according to the embodiment.
  • FIG. 8 is a sectional view of the second attachment part according to the embodiment.
  • FIG. 9 is a sectional view showing a state in the middle of attaching the detection terminal according to the embodiment to the second attachment part.
  • a power storage device includes a detection member having a detection terminal that detects a state of a power storage element and an electric wire led out from the detection terminal; a holding member for holding, and the detection terminal includes a detection portion, a base portion from which the electric wire is led out, an end portion, an intermediate portion located between the base portion and the other end portion, and a protrusion portion.
  • the base portion, the intermediate portion, and the end portion are arranged side by side in a first direction, and the protruding portion is arranged from a side of the intermediate portion in a second direction intersecting the first direction.
  • the holding member protrudes, and the holding member includes a claw portion arranged at a position overlapping the protrusion portion when viewed in a third direction intersecting the first direction and the second direction, and a position adjacent to the end portion. and a facing portion provided at the opposite side.
  • the holding member is provided with a facing portion at a position facing the end of the detection terminal.
  • the holding member has a pair of second walls, the protrusion is disposed between the pair of second walls, and the holding member has a pair of second walls.
  • the claw portion may be provided only on the second wall portion of one of the sections.
  • the claw portion is provided only on one of the pair of second wall portions, there is less interference with the claw portion when arranging the detection terminal, and work efficiency is improved. It is possible to increase
  • the holding member has a detection terminal installation part in which a part of the detection terminal is installed, and the detection terminal installation part It may be provided in a shape that stands up from the floor surface of the member.
  • the detection terminal installation part is provided in a shape that stands up from the floor surface, the vicinity of the base of the detection terminal is separated from the floor surface. This portion spaced apart from the floor surface is easy for the operator to hold, making it easier to perform the work of arranging the detection member. Since the detection terminal installation part is provided in a shape that simply stands up from the floor surface, the structure is simple, and it is also possible to suppress the complexity of the mold for molding the holding member.
  • the holding member may have a support base that supports the base or the electric wire.
  • the detection terminal when a part of the detection terminal is placed on the detection terminal installation part, the detection terminal may tilt, but by supporting the base or the electric wire extending from the base with a support, the detection terminal can be prevented from tilting. can be suppressed.
  • the opposing portion may be a first wall portion having a flat surface.
  • the first wall portion which is the opposing portion, has a flat surface, when positioning the end portion of the detection terminal on the first wall portion, the posture of the detection terminal is stabilized and positioning is easy.
  • the detection terminal includes a temperature detection element
  • the detection section is connected to an electrode terminal of the power storage element
  • the electric wire has a voltage detection wire and a temperature detection wire
  • one side of the base has a wire arrangement part where the voltage detection wire is arranged
  • the other side of the base has a wire arrangement part where the temperature detection element is arranged.
  • the temperature detection wire may be led out.
  • the wire arrangement section in which the voltage detection wire is arranged is provided on one side of the base, and the temperature detection element and the temperature detection wire are provided on the other side of the base, so that the wire arrangement section and the temperature detection wire are arranged on the other side of the base. and temperature detection wires, and they can be arranged compactly.
  • the claw portion is provided only on the second wall portion farthest from the opposing portion of the pair of second wall portions.
  • a section may be provided.
  • the second wall part close to the facing part and the second wall part far from the facing part only the second wall part farthest from the facing part is provided with the claw part. Since the claw portion is not provided on the second wall portion close to the opposing portion, it is easy to abut the end portion of the detection terminal against the opposing portion when placing it on the holding member. Therefore, the workability of arranging the detection terminal on the holding member is further improved.
  • the direction in which a pair of electrode terminals (positive and negative electrodes) in one power storage element are arranged, the opposing direction of the short sides of the container of the power storage element, or the short direction of the exterior body is the X-axis direction. It is defined as The direction in which the plurality of power storage elements are lined up, the direction in which the long sides of the container of the power storage elements face each other, the direction in which the power storage elements and spacers are lined up, or the longitudinal direction of the exterior body is defined as the Y-axis direction.
  • the direction in which the power storage elements and the bus bar are lined up, the direction in which the body and lid of the container of the power storage element are lined up, or the vertical direction is defined as the Z-axis direction.
  • X-axis direction, Y-axis direction, and Z-axis direction are directions that intersect with each other (orthogonal in this embodiment).
  • the Z-axis direction may not be the vertical direction, but for convenience of explanation, the Z-axis direction will be described as the vertical direction below.
  • the X-axis plus direction indicates the arrow direction of the X-axis
  • the X-axis minus direction indicates the opposite direction to the X-axis plus direction.
  • the X-axis direction it refers to both or one of the X-axis plus direction and the X-axis minus direction.
  • the Y-axis direction and the Z-axis direction may also be referred to as the first direction
  • the X-axis direction may also be referred to as the second direction
  • the Z-axis direction may also be referred to as the third direction.
  • FIG. 1 is a perspective view showing the appearance of a power storage device 1 according to an embodiment.
  • FIG. 2 is an exploded perspective view showing each component when power storage device 1 according to the embodiment is disassembled.
  • the power storage device 1 is a device that can charge electricity from the outside and discharge electricity to the outside, and has a substantially rectangular parallelepiped shape in this embodiment.
  • the power storage device 1 is a battery module (battery assembly) used for power storage, power supply, or the like.
  • the power storage device 1 is used for driving or starting an engine of a moving object such as an automobile, a motorcycle, a watercraft, a ship, a snowmobile, an agricultural machine, a construction machine, or a railway vehicle for an electric railway. Used as batteries, etc.
  • Examples of the above-mentioned vehicles include electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and fossil fuel (gasoline, diesel oil, liquefied natural gas, etc.) vehicles.
  • Examples of the above-mentioned railway vehicles for electric railways include electric trains, monorails, linear motor cars, and hybrid electric trains equipped with both a diesel engine and an electric motor.
  • the power storage device 1 can also be used as a stationary battery or the like used for home or business purposes.
  • the power storage device 1 includes a power storage unit 10 and a board unit 20 attached to the power storage unit 10.
  • the power storage unit 10 has a substantially rectangular parallelepiped shape that is elongated in the Y-axis direction.
  • the board unit 20 is a device that can monitor the state of the power storage element 100 included in the power storage unit 10 and control the power storage element 100, and has a circuit board and the like inside.
  • the substrate unit 20 is a flat rectangular member that is attached to the end of the power storage unit 10 in the longitudinal direction, that is, to the side surface of the power storage unit 10 in the negative direction of the Y-axis.
  • the power storage unit 10 includes a plurality of power storage elements 100, a plurality of spacers 200, an exterior body 300, a plurality of bus bars 400, a plurality of detection members 450, and an exterior body support 500. , an exhaust member 600, a cable 410, and a cable 420.
  • the power storage element 100 is a secondary battery (single battery) that can charge and discharge electricity, and more specifically, is a non-aqueous electrolyte secondary battery such as a lithium ion secondary battery.
  • the power storage element 100 has a flat rectangular parallelepiped shape (prismatic shape), and in this embodiment, 14 power storage elements 100 are arranged in a line in the Y-axis direction.
  • the size and shape of power storage element 100, the number of power storage elements 100 arranged, etc. are not limited, and only one power storage element 100 may be arranged.
  • the power storage element 100 is not limited to a non-aqueous electrolyte secondary battery, and may be a secondary battery other than a non-aqueous electrolyte secondary battery, or a capacitor.
  • the power storage element 100 may be not a secondary battery but a primary battery that allows the user to use the stored electricity without charging it.
  • Power storage element 100 may be a battery using a solid electrolyte.
  • the power storage element 100 may
  • FIG. 3 is a perspective view showing the configuration of the power storage element according to the embodiment.
  • the power storage element 100 includes a container 110 and a pair of electrode terminals 140 (a positive electrode and a negative electrode). Inside the container 110, an electrode body, a pair of current collectors (a positive electrode and a negative electrode), an electrolytic solution (non-aqueous electrolyte), and the like are accommodated, but illustration and detailed description thereof will be omitted.
  • the container 110 has a rectangular parallelepiped shape that is elongated in the X-axis direction.
  • the container 110 includes a container body 120 with an opening formed therein, and a lid portion 130 that closes the opening of the container body.
  • the lid 130 has a gas exhaust valve 131 that releases the pressure when the pressure inside the container 110 increases excessively.
  • the electrode terminal 140 is arranged so as to protrude from the lid 130 in the positive Z-axis direction.
  • the electrode terminal 140 is electrically connected to the positive electrode plate and the negative electrode plate of the electrode body via a conductive current collector.
  • the electrode body is a power storage element (power generation element) formed by laminating a positive electrode plate, a negative electrode plate, and a separator.
  • the container 110 may be covered with an insulating exterior sheet 199 (see FIG. 5).
  • the spacer 200 (210, 220) is a flat rectangular member that is arranged in line with the power storage element 100 in the Y-axis direction (first direction) and heats and/or insulates the power storage element 100 and other members.
  • the spacer 200 is a heat insulating plate or an insulating plate that is arranged in the positive Y-axis direction or the negative Y-axis direction of the power storage element 100 and heats and/or insulates the power storage elements 100 from each other or the power storage element 100 and the exterior body support 500.
  • the spacer 200 is formed of a member having heat insulating properties such as mica, or a member having insulating properties such as any resin material that can be used for the exterior body 300 described below. Spacer 210 and spacer 220 of spacer 200 may be made of the same material, or may be made of different materials.
  • the spacer 210 of the spacers 200 is a flat rectangular spacer parallel to the XZ plane that is arranged between two adjacent power storage elements 100 and insulates and/or insulates between the two power storage elements 100. (intermediate spacer). Specifically, the spacer 210 is located between the long sides of the container 110 of the two power storage elements 100 and faces the long sides thereof. In this embodiment, 13 spacers 210 and 14 power storage elements 100 are arranged alternately in the Y-axis direction, but when the number of power storage elements 100 is other than 14, the spacers 210 The number is also changed as appropriate depending on the number of power storage elements 100.
  • the spacer 210 is not limited to being arranged between all of the power storage elements 100, and a configuration may be adopted in which the spacer 210 is not arranged between any of the power storage elements 100. All the spacers 210 may be made of the same material, or any of the spacers 210 may be made of different materials.
  • the spacer 220 of the spacers 200 is disposed between the power storage element 100 at the end and the side wall of the exterior body support 500, and provides insulation between the power storage element 100 at the end and the side wall of the exterior body support 500. and/or an insulating flat rectangular spacer (end spacer) parallel to the XZ plane.
  • Two spacers 220 are arranged between the power storage elements 100 located at both ends in the Y-axis direction and the side walls of the exterior body support 500 at both ends in the Y-axis direction.
  • the spacer 220 is arranged between the long side of the container 110 of the power storage element 100 at the end in the Y-axis direction and the side wall of the exterior support 500 facing in the Y-axis direction. It faces the side wall of the body 500.
  • the two spacers 220 may be made of the same material, or may be made of different materials.
  • the exterior body 300 is a member that is arranged outside of the plurality of power storage elements 100 and the plurality of spacers 200 and forms a casing (outer shell of the power storage unit 10) that covers the plurality of power storage elements 100 and the like. Specifically, the exterior body 300 is arranged on both sides of the plurality of power storage elements 100 in the Z-axis direction so as to sandwich the plurality of power storage elements 100 and the plurality of spacers 200 in the Z-axis direction. Covers both ends in the Z-axis direction. Thereby, the exterior body 300 holds the plurality of power storage elements 100 and the plurality of spacers 200 together and fixes them at a predetermined position.
  • the exterior body 300 is made of polycarbonate (PC), polypropylene (PP), polyethylene (PE), polystyrene (PS), polyphenylene sulfide resin (PPS), polyphenylene ether (PPE (including modified PPE)), polyethylene terephthalate (PET). , polybutylene terephthalate (PBT), polyether ether ketone (PEEK), tetrafluoroethylene perfluoroalkyl vinyl ether (PFA), polytetrafluoroethylene (PTFE), polyether sulfone (PES), polyamide (PA), ABS It is formed of an insulating member such as resin or a composite material thereof, or metal coated with an insulating coating. Exterior body 300 thereby prevents power storage element 100 and the like from coming into contact with external metal members and the like. Exterior body 300 may be formed of a conductive member such as metal, as long as the insulation of power storage element 100 and the like is maintained.
  • the exterior body 300 has a first exterior body that is a lower member of the exterior body 300 and a second exterior body that is an upper member.
  • the first exterior body is the resin tray 301 that constitutes the main body of the exterior body 300
  • the second exterior body is the holding member 302 that constitutes the lid of the exterior body 300.
  • the resin tray 301 and the holding member 302 may be made of the same material, or may be made of different materials.
  • the resin tray 301 is a rectangular tray whose entire surface in the positive direction of the Z-axis is open and the surface in the negative direction of the Z-axis is closed. Specifically, the resin tray 301 is arranged in the negative Z-axis direction of the plurality of power storage elements 100 and the plurality of spacers 200, and is long and deep in the Y-axis direction on which the plurality of power storage elements 100 and the like are placed. is a shallow box-shaped (flat, approximately rectangular parallelepiped) tray.
  • the holding member 302 is a member that is arranged in the Z-axis plus direction of the plurality of power storage elements 100 and the plurality of spacers 200 and is elongated in the Y-axis direction and placed on the plurality of power storage elements 100.
  • the holding member 302 can be said to be the inner lid of the power storage unit 10 because it is arranged between the second support 520 of the exterior body support 500 and the power storage element 100, which will be described later.
  • the holding member 302 is a busbar frame (also referred to as a busbar holder or a wiring plate), and performs insulation between the busbar 400 and other members, regulation of the position of the busbar 400, and the like.
  • the holding member 302 is placed on the plurality of power storage elements 100 and positioned with respect to the plurality of power storage elements 100, and the plurality of bus bars 400 are positioned with respect to the holding member 302. Thereby, each bus bar 400 is positioned with respect to the plurality of power storage elements 100 and joined to the electrode terminal 140 that the plurality of power storage elements 100 have.
  • the holding member 302 also holds and positions a plurality of detection members 450. A detailed explanation of the configuration of the holding member 302 will be described later.
  • the bus bar 400 is a rectangular plate-like member that is arranged on the plurality of power storage elements 100 and electrically connects the electrode terminals 140 of the plurality of power storage elements 100.
  • bus bar 400 and electrode terminal 140 are connected (joined) by bolting, but may be connected (joined) by welding or the like.
  • the bus bar 400 is formed of a metal conductive member such as aluminum, aluminum alloy, copper, copper alloy, nickel, or a combination thereof, or a conductive member other than metal.
  • bus bar 400 connects 14 power storage elements 100 in series by connecting electrode terminals 140 of adjacent power storage elements 100, but the connection mode of power storage elements 100 is limited to the above. However, any combination of series and parallel connections may be used.
  • the power storage device 1 By connecting the electrode terminals 140 of the power storage elements 100 located at both ends in the Y-axis direction of the plurality of power storage elements 100 to the cables 410 and 420, the power storage device 1 charges with electricity from the outside, It can also discharge electricity to the outside.
  • Cables 410 and 420 are positive and negative electric wires (power cables) through which current flows for charging and discharging power storage device 1 (power storage element 100). Cables 410 and 420 are held by holding member 302.
  • the detection member 450 is a member that detects the state of the power storage element 100.
  • detection member 450 is voltage detection member 460 or temperature detection member 470.
  • the voltage detection member 460 has a detection terminal 480 and an electric wire 461 led out from the detection terminal 480.
  • the temperature detection member 470 has a detection terminal 480 and an electric wire 472 led out from the detection terminal 480.
  • Detection member 450 is held and arranged by holding member 302 along the Y-axis direction, which is the direction in which the plurality of power storage elements are arranged.
  • detection member 450 is connected to bus bar 400. Detection member 450 detects the state of power storage element 100 via bus bar 400.
  • Detection member 450 is a member for detecting voltage of power storage element 100, temperature detection, or voltage balance between power storage elements 100.
  • a connector 450a is connected to the end of the detection member 450 in the negative Y-axis direction.
  • Connector 450a is connected to the board of board unit 20. That is, detection member 450 transmits information such as the voltage and temperature of power storage element 100 to the board of board unit 20 via connector 450a.
  • Detection member 450 may be an electric wire for voltage balance between a plurality of power storage elements 100. In this case, the detection member 450 has a function of discharging the power storage elements 100 having a high voltage and balancing the voltages between the power storage elements 100 under control of the board. Detection member 450 may be directly connected to electrode terminal 140 of power storage element 100 without intervening bus bar 400 .
  • the exterior body support 500 is a member that supports and protects (reinforces) the exterior body 300.
  • the exterior support 500 is made of a metal member such as stainless steel, aluminum, aluminum alloy, iron, or plated steel plate.
  • the exterior body support 500 has a first support body 510 that constitutes the main body of the exterior body support body 500 and a second support body 520 that constitutes the lid body of the exterior body support body 500.
  • the first support body 510 and the second support body 520 may be made of the same material, or may be made of different materials.
  • the first support body 510 is a metal plate on which the resin tray 301 is placed and supports the resin tray 301 from below (Z-axis negative direction), and includes a bottom plate 511 and connection parts 512 and 513. .
  • the bottom plate 511 is a flat rectangular portion that constitutes the bottom of the power storage unit 10 and extends in the Y-axis direction and parallel to the XY plane, and is arranged in the negative Z-axis direction of the resin tray 301.
  • a plurality of locking pieces 511a that are locked to the resin tray 301 are formed on each edge of the bottom plate 511 in the X-axis direction.
  • the plurality of locking pieces 511a extend from the end in the Y-axis positive direction, the center in the Y-axis direction, and the end in the Y-axis negative direction on each edge of the bottom plate 511 facing each other in the X-axis direction. protrudes in the direction.
  • a flat rectangular rib 511b extending parallel to the YZ plane and in the Y-axis direction is formed between a plurality of locking pieces 511a.
  • Each rib 511b is formed lower than the height (length in the Z-axis direction) of the locking piece 511a.
  • the connecting portion 512 is a plate-shaped portion that stands upright in the Z-axis positive direction from the Y-axis negative end of the bottom plate 511 and protrudes in the Y-axis negative direction, and is connected to the second support body 520.
  • the connecting portion 513 is a plate-shaped portion that stands upright in the Z-axis positive direction from the Y-axis positive direction end of the bottom plate 511 and protrudes in the Y-axis positive direction, and is connected to the second support body 520 .
  • the second support body 520 is a metal plate that presses and supports the holding member 302 from above (Z-axis positive direction), and has a top surface portion 521 and connection portions 522 and 523.
  • the top surface portion 521 is a flat rectangular portion that constitutes the top surface portion (outer lid) of the power storage unit 10 and extends in the Y-axis direction and parallel to the XY plane, and is arranged in the positive Z-axis direction of the holding member 302. be done.
  • the connecting portion 522 is a portion that extends in the negative Z-axis direction from the end of the top surface portion 521 in the negative Y-axis direction and projects in the negative Y-axis direction, and is connected to the connecting portion 512 of the first support body 510 .
  • the connecting portion 523 is a portion that extends from the end of the top surface portion 521 in the Y-axis positive direction in the Z-axis negative direction and projects in the Y-axis positive direction, and is connected to the connecting portion 513 of the first support body 510.
  • first support body 510 and the second support body 520 sandwich the resin tray 301 and the holding member 302 from the Z-axis direction, and the connection parts 512 and 513 and the connection parts 522 and 523 are screwed together, etc. It is configured to be fixed by being connected (joined) with. Thereby, the exterior body support body 500 supports (holds) the exterior body 300.
  • the exhaust member 600 is placed on the holding member 302 so as to be placed on the gas exhaust valve 131 of each power storage element 100, and forms an exhaust path for the gas exhausted from each gas exhaust valve 131. .
  • One end of the exhaust member 600 in the Y-axis plus direction is an exhaust port 601 through which gas is exhausted, and is exposed from the connection portion 523 of the second support 520.
  • the exhaust member 600 includes a main body portion 610 that is open at the top (in the Z-axis positive direction), and a lid member 650 that closes the open portion of the main body portion 610.
  • the internal space between the main body portion 610 and the lid member 650 serves as a gas exhaust path.
  • FIG. 4 is an exploded perspective view showing a holding member 302, a plurality of bus bars 400, and a plurality of detection members 450 according to the embodiment.
  • the holding member 302 is a member that is placed on the plurality of power storage elements 100 and holds the plurality of bus bars 400, the plurality of detection members 450, and the cables 410 and 420.
  • the holding member 302 includes a first holding part 310, a second holding part 320, and a connecting part 330.
  • the plurality of detection members 450 the plurality of detection members 450 held by the first holding part 310 are referred to as first detection members 451, and the plurality of detection members 450 held by the second holding part 320 are referred to as second detection members. It is called 452.
  • the first holding portion 310 is a portion of the holding member 302 in the X-axis plus direction (one side).
  • the first holding part 310 is a part that holds the plurality of busbars 400 in the positive direction of the X axis, the cable 410, and the first detection member 451 among the plurality of busbars 400.
  • the first holding part 310 is arranged in the positive direction of the X-axis relative to the gas exhaust valve 131 of each power storage element 100.
  • the first holding part 310 has a first outer wall part 311 that surrounds the outer periphery of the first holding part 310, and a first partition wall 312 and a first partition wall 313 that surround each bus bar 400 together with the first outer wall part 311. ing.
  • the first partition wall 313 is arranged between each bus bar 400.
  • the first outer wall portion 311 has a rectangular shape when viewed in the Z-axis direction, and has a frame-like shape that is elongated in the Y-axis direction.
  • Connector lead-out portions 311a and 311b are formed at the ends of the first outer wall portion 311 in the negative Y-axis direction.
  • the cable 410 and the first detection member 451 are arranged so as to be led out from the connector lead-out portion 311a.
  • a cable 420 is arranged to be led out from the connector lead-out portion 311b.
  • the first partition wall 312 is provided within the first outer wall portion 311 to be elongated in the Y-axis direction.
  • the end of the first partition wall 312 in the Y-axis positive direction is arranged between the power storage element 100 at the end in the Y-axis positive direction and the power storage element 100 adjacent thereto.
  • An end portion of the first partition wall 312 in the Y-axis negative direction extends to the connector lead-out portion 311a of the first outer wall portion 311.
  • a first cable path portion 314 is provided along the Y-axis direction in a region further in the negative direction of the X-axis than the first partition wall 312.
  • the first cable path portion 314 is a portion where the cable 410 and the plurality of first detection members 451 are arranged.
  • the cable 410 and each of the plurality of first detection members 451 are arranged in a posture generally along the Y-axis direction.
  • the first cable path section 314 is provided between the gas exhaust valve 131 of each power storage element 100 and each bus bar 400 held by the first holding section 310 when viewed in the Z-axis direction.
  • the first cable path portion 314 is provided with a plurality of first attachment portions 340 for attaching each first detection member 451 to the electrode terminal 140 of each power storage element 100.
  • the plurality of first attachment parts 340 are provided on the side of each bus bar 400 in the X-axis direction, and are arranged along the Y-axis direction.
  • the second holding portion 320 is a portion of the holding member 302 in the negative X-axis direction (on the other side).
  • the second holding part 320 is a part that holds the plurality of busbars 400 in the negative X-axis direction and the second detection member 452 among the plurality of busbars 400 .
  • the second holding part 320 is arranged in the negative X-axis direction relative to the gas exhaust valve 131 of each power storage element 100.
  • the second holding part 320 has a second outer wall part 321 that surrounds the outer periphery of the second holding part 320, and a second partition wall 322 that surrounds each bus bar 400 together with the second outer wall part 321.
  • a connector lead-out portion 321a is formed at the end of the second outer wall portion 321 in the negative Y-axis direction.
  • a plurality of second detection members 452 are arranged so as to be led out from the connector lead-out portion.
  • the second partition wall 322 is provided within the second outer wall portion 321 to be elongated in the Y-axis direction. An end of the second partition wall 322 in the Y-axis plus direction is connected to an end of the second outer wall portion 321 in the Y-axis plus direction. An end of the second partition wall 322 in the negative Y-axis direction extends to the second notch 321a of the second outer wall 321.
  • a plurality of second partition walls 323 are provided in the region of the second partition wall 322 in the negative X-axis direction, and are arranged between the bus bars 400.
  • a region located further in the X-axis plus direction than the second partition wall 322 is a second cable path portion 324 that is penetrated along the Y-axis direction.
  • the second cable path portion 324 is a portion where a plurality of second detection members 452 are arranged.
  • each of the plurality of second detection members 452 is arranged in a posture generally along the Y-axis direction.
  • the second cable path section 324 is arranged between the gas exhaust valve 131 of each power storage element 100 and each bus bar 400 held by the second holding section 320 when viewed in the Z-axis direction.
  • the second cable path portion 324 is provided with a plurality of second attachment portions 350 for attaching each second detection member 452 to the electrode terminal 140 of each power storage element 100.
  • the plurality of second attachment parts 350 are provided on the side of each bus bar 400 in the X-axis direction, and are arranged along the Y-axis direction.
  • the connecting part 330 is a part that connects the first holding part 310 and the second holding part 320.
  • the connecting part 330 includes a plurality of beam parts 331 that are elongated in the X-axis direction and have one end connected to the first holding part 310 and the other end connected to the second holding part 320. ing.
  • the plurality of beam parts 331 are arranged at predetermined intervals in the Y-axis direction.
  • the beam portion 331 at the end in the Y-axis negative direction is arranged outside the power storage element 100 at the end in the Y-axis negative direction.
  • the beam portion 331 at the end in the Y-axis plus direction is arranged outside the power storage element 100 at the end in the Y-axis plus direction. Beam portions 331 other than these are arranged between a pair of adjacent power storage elements 100. In this way, the plurality of beam portions 331 are arranged at positions retracted from the gas exhaust valves 131 of each power storage element 100. In other words, the gas exhaust valve 131 of each power storage element 100 is exposed from the plurality of beams 331 when viewed from above.
  • FIG. 5 is a perspective view showing a schematic configuration of the second mounting portion 350 and various members around it according to the embodiment.
  • a voltage detection member 460 for voltage measurement and a temperature detection member 470 for temperature measurement which are examples of the detection member 450, are arranged in the second mounting portion 350.
  • the detection member shown in FIG. 5 has a voltage detection function and a temperature detection function, and the detailed structure will be described later.
  • FIG. 6 is a perspective view showing a schematic configuration of voltage detection member 460 according to the embodiment.
  • the voltage detection member 460 includes a detection terminal 480 and an electric wire 461 to which the detection terminal 480 is connected.
  • Voltage detection member 460 is an example of a detection member. Since the voltage detection member 460 has components common to the temperature detection member 470, some of the temperature detection members will also be described.
  • the detection terminal 480 is formed from a sheet metal, and includes a wire fixing portion 481 to which the wire 461 is fixed, a terminal joint portion 487 joined to the electrode terminal 140 of the power storage element 100, and the wire fixing portion 481 and the terminal joint portion 487. It has a protrusion 484 that connects.
  • the wire fixing part 481 has a base part 482, an end part 483, and an intermediate part 489.
  • the base portion 482 is a portion to which the electric wire 461 is joined.
  • the end portion 483 is the end surface of the wire fixing portion 481 opposite to the base portion 482 and a portion in the vicinity thereof.
  • the end portion 483 is a portion that comes into contact with a first wall portion 354, which will be described later, during the work of arranging the detection terminal 480.
  • the intermediate portion 489 is a portion located between the base portion 482 and the end portion 483.
  • the base portion 482, the intermediate portion 489, and the end portion 483 are arranged side by side in the Y-axis direction (first direction).
  • the base portion 482, the intermediate portion 489, and the end portion 483 are arranged in order from the Y-axis minus direction.
  • the edge of the end portion 483 at the tip in the Y-axis plus direction is formed into a straight line parallel to the X-axis direction.
  • a fixing hole 486 for fixing the temperature detection element 471 is formed in the wire fixing part 481 at a position corresponding to the protruding part 484.
  • a pair of second guide parts 488 that protrude upward are provided in a portion closer to the base 482 than the fixing hole 486.
  • a temperature detection element 471 (described later) is arranged between the pair of second guide parts 488. That is, when the temperature detection element 471 is attached, the temperature detection element 471 can be guided to a predetermined position.
  • the second guide section 488 can also be called an element guide section.
  • the base 482 is a part from which the electric wire 461 is led out, and a core wire 461a (see FIG. 8) of the electric wire 461 is crimped.
  • the lower surface of the base portion 482 is a wire placement portion 482a (see FIG. 8) in which the core wire 461a of the wire 461 is placed.
  • the electric wire 461 has an insulating covering part 461b that covers the core wire 461a, and the tip of the core wire 461a protrudes from the covering part 461b. In FIGS. 5 and 6, the electric wire 461 is shown without being crimped.
  • the edge of the end portion 483 is located on the plus side in the Y-axis direction (first direction) than the edge of the protrusion 484 in the Y-axis direction.
  • a notch 484b is formed by the end portion 483 and the protruding portion 484.
  • the edge of the end portion 483 is located on the plus side in the Y-axis direction (first direction) than the end surface of the second wall portion 356, which will be described later, in the Y-axis direction.
  • the second wall portion 356 is arranged at the position of the notch 484b.
  • the protruding portion 484 is a portion that protrudes from the side of the intermediate portion 489 in the negative X-axis direction.
  • a terminal joint portion 487 is formed on the side of the protrusion portion 484 in the negative X-axis direction.
  • the protruding portion 484 is a portion that connects the wire fixing portion 481 and the terminal joining portion 487.
  • the protruding portion 484 has a first portion 484a, a second portion 484b, and a stepped portion 485.
  • the first portion 484a and the second portion 484b have shapes with two different lengths in the Y-axis direction.
  • the first portion 484a is a portion continuous with the intermediate portion 489.
  • the second portion 484b is located closer to the terminal joint portion 487 than the first portion 484a, and is continuous with the first portion 484a.
  • the first portion 484a has a longer length in the Y-axis direction than the second portion 484b.
  • the stepped portion 485 is a flat plate-shaped portion that is bent downward (in the negative Z-axis direction) from the tip of the second portion 484b.
  • the detection terminal 480 is bent again at the lower end of the stepped portion 485, and a terminal joint portion 487 is formed so as to be parallel to the XY plane.
  • the terminal joint portion 487 is a portion formed in an annular and flat plate shape.
  • the through hole 487a of the terminal joint portion 487 is formed in an oval shape that is long in the Y-axis direction.
  • the terminal joint portion 487 is fixed on the bus bar 400 with a nut while the electrode terminal 140 of the power storage element 100 is inserted into the through hole 487a.
  • the terminal joint portion 487 is connected to the electrode terminal 140 of the power storage element 100 via the bus bar 400, but the terminal joint portion 487 is directly connected to the electrode terminal 140 of the power storage element 100. They may be joined.
  • the terminal joint part 487 is a part that detects the voltage of the power storage element 100 and the power storage unit 10, and is an example of a detection part.
  • the temperature detection member 470 is a member that detects the temperature of the power storage element 100. As shown in FIG. 5, the temperature detection member 470 is configured by disposing a temperature detection element 471 on a detection terminal 480 (see FIG. 6) of the voltage detection member 460. That is, the detection member shown in FIG. 6 is both a temperature detection member and a voltage detection member.
  • the temperature detection member 470 includes a detection terminal 480, a temperature detection element 471, and an electric wire 472 (temperature detection electric wire) led out from the detection terminal 480. Temperature detection member 470 is an example of a detection member.
  • the configuration of the temperature detection member 470 will be explained. Description of the configuration that overlaps with voltage detection member 460 will be omitted.
  • the temperature detection element 471 is a thermistor that is long in the Y-axis direction. A pair of electric wires 472 are led out from the ends of the temperature detection element 471 in the longitudinal direction.
  • the temperature detection element 471 is arranged on the upper surface of the base portion 482 and the intermediate portion 489 of the detection terminal 480, with the electric wire 472 being led out from the base portion 482.
  • the temperature detection element 471 is arranged so as to be sandwiched between a pair of second guide parts 488 of the wire fixing part 481.
  • the second guide portion 488 has the function of positioning and regulating the position of the temperature detection element 471.
  • a screw hole 473 is formed at the tip of the temperature detection element 471.
  • the temperature detection element 471 is fixed to the wire fixing part 481 by attaching a screw 474 to the screw hole 473 through the fixing hole 486 of the wire fixing part 481 (see FIG. 8). With the above configuration, the electric wire 472 of the temperature detection member 470 is led out from the base 482 of the detection terminal 480.
  • the temperature detection element 471 may be fixed to the wire fixing part 481 with a rivet.
  • temperature detection of power storage element 100 by temperature detection member 470 will be explained.
  • terminal joint portion 487 of detection terminal 480 detects the temperature of power storage element 100 via bus bar 400. Specifically, first, the heat of the power storage element 100 is transferred to the terminal joint portion 487 , and the heat is transferred to the temperature detection element 471 via the protrusion portion 484 and the wire fixing portion 481 . In this way, temperature detection element 471 detects the temperature of power storage element 100. Temperature information of power storage element 100 is transmitted from temperature detection element 471 to the board via electric wire 472.
  • the terminal joint portion 487 is an example of a detection section (temperature detection section) in a detection member (temperature detection member).
  • the temperature detection element 471 is arranged on the upper surface of the base portion 482 and the intermediate portion 489. With this arrangement, the electric wire 472 of the temperature detection member 470 is led out from the base 482.
  • the temperature detection element 471 is arranged in an element arrangement part 482b of the wire fixing part 481 on the opposite side to the wire arrangement part 482a.
  • FIG. 7 is a perspective view showing a schematic configuration of the second attachment part 350 according to the embodiment.
  • FIG. 7 is a diagram corresponding to FIG. 5.
  • FIG. 8 is a sectional view of the second attachment portion 350 according to the embodiment.
  • FIG. 8 is a sectional view taken along the line VIII-VIII in FIGS. 5 and 7.
  • the second attachment portion 350 is formed to continuously protrude from the second partition wall 322 into the second cable path portion 324.
  • the second mounting part 350 includes a detection terminal installation part 351 in which a part of the detection terminal 480 is installed, a surrounding wall 352 surrounding a part of the upper surface of the detection terminal installation part 351, and a pair of first guide parts 361 and 362. have.
  • a support stand 370 is provided near the second attachment part 350.
  • the detection terminal installation section 351 is a pedestal that stands up from the floor surface 325 of the second cable path section 324.
  • the floor surface 325 is a floor portion where the detection member 450 is wired.
  • the detection terminal installation section 351 supports the wire fixing section 481 of the detection terminal 480 on its upper surface, a terminal installation surface 351a.
  • the wire fixing section 481 supported by the terminal installation surface 351a is arranged at a position away from the floor surface 325 of the second cable path section 324 in the Z-axis direction.
  • an accommodation recess 353 is formed in which the screw head of the screw 474 is accommodated. By accommodating the screw head of the screw 474 in the accommodating recess 353, the detection terminal 480 can be stably arranged in the detection terminal installation section 351.
  • the surrounding wall 352 is formed to open a portion of the detection terminal installation portion 351 corresponding to the base portion 482 and a portion corresponding to the protrusion portion 484, and to surround other portions.
  • the surrounding wall 352 includes a first wall 354 , a pair of second walls 355 and 356 , and a third wall 357 .
  • the first wall portion 354 is an example of a facing portion adjacent to and facing the end portion 483 of the detection terminal 480 in the Y-axis direction.
  • the first wall portion 354 is a portion that protrudes upward from the edge of the detection terminal installation portion 351 in the Y-axis positive direction, and is formed in a flat plate shape parallel to the XZ plane. Therefore, the first wall portion 354 has a flat surface 354a.
  • the pair of second walls 355 and 356 are arranged at positions sandwiching the first portion 484a of the protrusion 484 in the Y-axis direction.
  • one second wall part 355 is arranged in the Y-axis minus direction more than the first part 484a, and the other second wall part 355 is arranged in the Y-axis plus direction than the first part 484a. It is located in
  • Each second wall portion 355, 356 is formed into a flat plate shape parallel to the YZ plane.
  • the wall surface of each second wall portion 355, 356 may have an inclination caused by the draft angle of the resin molded product.
  • the second wall portion 355 is continuous with the second partition wall 322 at the end of the detection terminal installation portion 351 in the negative Y-axis direction.
  • a claw portion 358 is provided from the top of the second wall portion 355 and extends in the positive direction of the Y-axis.
  • the claw portion 358 is arranged such that its tip portion overlaps the protrusion portion 484 when viewed in the Z-axis direction.
  • the claw portion 358 has a base portion extending along the Y-axis direction, and a portion from the middle portion to the tip portion tilting downward in the positive direction of the Y-axis. ing.
  • the claw portion 358 has elasticity.
  • the claw portion 358 is a rod-shaped body with a partially bent portion, the length of the rod is long and the elasticity is greater than that of a short straight rod-shaped body. It can also be said that the claw portion 358 has an arm shape.
  • the tip end surface of the claw portion 358 is parallel to the XY plane, and overlaps with the protrusion portion 484 when viewed in the Z-axis direction.
  • the claw portion 358 is formed only on one second wall portion 355 of the pair of second wall portions 355 and 356. Since the claw portion 358 is not formed on the other second wall portion 356, when viewed in the Z-axis direction, the distance between the tip of the claw portion 358 and the second wall portion 356 in the Y-axis direction is such that the distance between the claw portion 358 and the second wall portion 356 is If provided, the distance in the Y-axis direction between the tip of one claw portion 358 and the tip of the other claw portion 358 is greater. This makes it easier to install the protruding portion 484 of the detection terminal 480 in the detection terminal installation portion 351. Since the claw portion 358 is formed only on the second wall portion 355, stress is not easily applied to the claw portion 358.
  • the other second wall portion 356 is disposed at a position closer to the second partition wall 322 at the end of the detection terminal installation portion 351 in the Y-axis positive direction, and is continuous with the first wall portion 354 and is connected to the second wall portion 354. It is also continuous with the partition wall 322.
  • An inclined surface 356a is formed at the upper end of the other second wall portion 356 in the negative Y-axis direction. The inclined surface 356a is inclined downward in the negative direction of the Y-axis.
  • the third wall portion 357 is a portion that protrudes upward from the edge of the detection terminal installation portion 351 in the positive X-axis direction, extends in the Y-axis direction, and is continuous with the first wall portion 354.
  • the first wall portion 354, the pair of second wall portions 355, 356, and the third wall portion 357 restrict movement of the detection terminal 480 in the Y-axis plus direction and the X-axis direction.
  • the pair of first guide parts 361 and 362 protrude upward from the edge of the detection terminal installation part 351 in the negative X-axis direction.
  • the pair of first guide portions 361 and 362 are arranged in positions that are further in the negative X-axis direction than the pair of second wall portions 355 and 356 and sandwich the second portion 484b of the protruding portion 484 in the Y-axis direction.
  • the second portion 484b is arranged in the Y-axis plus direction of one first guide portion 361, and the first portion 484a is arranged in the X-axis plus direction. Therefore, one first guide portion 361 can restrict movement of the detection terminal 480 in the Y-axis minus direction and the X-axis minus direction.
  • the second portion 484b is arranged in the negative Y-axis direction of the other first guide portion 362, and the first portion 484a is arranged in the positive direction of the X-axis. Therefore, the other first guide portion 362 can restrict movement of the detection terminal 480 in the Y-axis plus direction and the X-axis minus direction.
  • An inclined surface 361a is formed at the upper end of one first guide portion 361 in the positive direction of the Y-axis.
  • the inclined surface 361a is inclined downward toward the positive direction of the Y-axis.
  • An inclined surface 362a is formed at the upper end of the other first guide portion 362 in the negative direction of the Y-axis.
  • the inclined surface 362a is inclined downward in the negative direction of the Y-axis.
  • the inclined surfaces 361a and 362a make it easier to arrange the protruding portion 484 of the detection terminal 480 between the pair of first guide portions 361 and 362.
  • a support stand 370 is arranged on the floor surface 325 of the second cable path section 324 at a position away from the second attachment section 350 in the negative Y-axis direction.
  • the support stand 370 is a stand that protrudes upward from the floor surface 325 of the second cable path section 324, and has a V-shaped groove 371 cut out in the upper surface thereof when viewed in the Y-axis direction.
  • An electric wire 461 extending from the base 482 of the detection terminal 480 is disposed and supported within this groove 371.
  • the support stand 370 may support the base portion 482 of the detection terminal 480.
  • FIG. 9 is a cross-sectional view showing a state in the middle of attaching the detection terminal 480 according to the embodiment to the second attachment part 350.
  • FIG. 9 is a diagram corresponding to FIG. 8.
  • the operator grasps the detection terminal 480 near the base 482 and places it on the detection terminal installation part 351 of the second mounting part 350. Specifically, as shown in FIG. 9, the operator brings the end 483 of the detection terminal 480 into contact with the base of the first wall 354 to make the detection terminal 480 oblique, and then moves the end 483 to the base of the first wall 354.
  • the base portion 482 is lowered while remaining in contact with the base of the first wall portion 354 (arrow Y1 in FIG. 9).
  • the second wall portion 356 is provided with an inclined surface 356a
  • the first guide portion 362 is provided with an inclined surface 362a. Interference with one guide portion 362 is suppressed.
  • the protruding portion 484 of the detection terminal 480 comes into contact with the claw portion 358. Specifically, since the claw portion 358 extends from the second wall portion 355 in the positive direction of the Y-axis, the detection terminal 480 moving downward approaches the claw portion 358 and moves to pass through it. When the protruding part 484 passes the claw part 358, the protruding part 484 slides on the claw part 358. At this time, since the protruding portion 484 descends along the Y-axis direction, the claw portion 358 extending in the first direction can be bent without twisting.
  • the claw portion 358 Since the claw portion 358 is not twisted, the claw portion 358 is smoothly bent when the protruding portion 484 passes the claw portion 358, and smoothly returns to its original shape even after passing. As a result, the tapping sound made when the protruding portion 484 passes the claw portion 358 and the tactile sensation felt by the operator become clear. Therefore, it becomes easier for the operator to recognize that the detection terminal 480 has been attached to the correct position, and ease of assembly is improved.
  • the first guide portion 361 is provided with the inclined surface 361a, it is easy to insert the detection terminal 481 between the pair of first guide portions 361 and 362. Even if the protrusion 484 comes into contact with this inclined surface 361a when the detection terminal 480 is lowered, the lowering of the detection terminal 480 can be guided by the inclined surface 361a.
  • the tip of the claw part 358 overlaps the protrusion part 484 when viewed in the Z-axis direction.
  • the claw portion 358 can restrict movement of the detection terminal 480 in the Z-axis plus direction.
  • the detection terminal 480 is not in contact with the holding member 302.
  • the power storage device 1 provides the following effects.
  • a claw portion 358 is provided to prevent the detection members 460, 470 from coming off the holding member 302.
  • the holding member 302 is provided with a first wall portion 354 (opposed portion) at a position facing the end portion 483 of the detection terminal 480.
  • the operator abuts the end 483 of the detection terminal 480 against the first wall 354 while grasping the base 482 of the detection terminal 480.
  • the detection terminal 480 can be stably passed from above to below in the Z-axis direction of the claw part 358 using the first wall part 354 as a guide, and can be easily attached to the holding member 302.
  • the detection terminal installation portion 351 is provided in a shape that rises from the floor surface 325 of the holding member 302, the base portion 482 of the detection terminal 480 is spaced apart from the floor surface 325. Although the area where the detection wire is routed is narrow and difficult to work on, since the base 482 is spaced apart from the floor surface 325, it becomes easier for the operator to work by grasping the vicinity of the base 482 with his or her fingers. Therefore, the work of wiring the voltage detection member 460 becomes easier. Since the detection terminal installation part 351 is provided in a shape that rises from the floor surface 325, it has a simple structure, and it is also possible to suppress the complexity of the mold for molding the holding member 302.
  • the detection terminal installation part When the detection terminal installation part does not rise from the floor surface 325 and is formed in the X-axis direction from the second partition wall 322, a hole is provided below the detection terminal installation part in the Z-axis direction for resin molding. At this time, the mold for resin molding becomes complicated. If there is a hole, it is necessary to take measures for electrical insulation from the power storage element and measures against heat influence from the power storage element. From the viewpoints of the mold, electrical insulation, and thermal effects, it is preferable that the detection terminal installation part has a shape that stands up from the floor surface 325.
  • the detection terminal 480 When a part of the detection terminal 480 is placed on the detection terminal installation part 351, the detection terminal 480 may be tilted. can be suppressed from tilting.
  • the first wall portion 354 which is the opposing portion, has the flat surface 354a, it is easy to position the end portion 483 of the detection terminal 480 on the first wall portion 354.
  • the contact state between the two is stabilized. This stabilizes the posture of the detection terminal 480 and improves work efficiency when attaching the detection terminal 480.
  • the temperature detection element 471 is arranged on the opposite side of the electric wire 461 at the base 482 of the detection terminal 480, the structure for holding the electric wire at the base 482 does not interfere with the temperature detection element 471, and the temperature detection element 471 can be arranged compactly. .
  • the claw portion 358 is provided only on the second wall portion 355, there is less interference with the claw portion when arranging the detection terminal 480, and it is possible to improve workability.
  • the pair of second wall parts 355 and 356 are each provided with a claw, the interval between these claws becomes narrow, and there is a risk that the protruding part 484 of the detection terminal 480 will be caught between the claws on both sides. If the pinched state continues, stress will be applied to the claws and there is a possibility that the claws will break.
  • By providing the claw portion 358 on only one side as in this embodiment it is possible to prevent the protrusion portion 484 from being caught, and to reduce the occurrence of problems such as breakage of the claw.
  • the second wall portion 356 that is close to the first wall portion (opposed portion) 354 and the second wall portion 355 that is far from the first wall portion (opposed portion) 354 only the second wall portion 355 that is far from the opposing portion has a nail.
  • a section 358 is provided. Since the second wall portion 356 near the first wall portion 354 is not provided with a claw portion, the work space near the first wall portion 354 is widened, and workability is improved. Therefore, the end portion 483 of the detection terminal 480 can easily be brought into contact with the first wall portion 354. The workability of arranging the detection terminal on the holding member is further improved.
  • the detection member 450 (voltage detection member 460, temperature detection member 470) has a notch 484b formed by an end 483 and a protrusion 484.
  • the second wall portion 356 By arranging the second wall portion 356 in this notch 484b, the second wall portion 356 also serves as a positioning guide when arranging the detection member 450 on the holding member 302. Therefore, the work of arranging the detection member 450 becomes easier.
  • the protrusion 484 is the part that connects the terminal joint 487 and the wire fixing part 481, but the protrusion does not have to be the part that connects the terminal joint and the wire fixing part.
  • the wire fixing portion may be provided with a protruding portion having a shape independent of the terminal joint portion.
  • the terminal joint portion may be formed continuously from the wire fixing portion.
  • the detection terminal installation portion 351 is provided in a shape that rises from the floor surface 325 of the holding member 302, but the detection terminal installation portion does not need to rise from the floor surface 325.
  • the holding member 302 has the support stand 370, but the holding member does not need to have the support stand.
  • the first wall portion 354 having the flat surface 354a is used as the opposing portion, but the opposing portion does not need to have a flat surface as long as the end of the detection terminal is applied.
  • the temperature detection element 471 is arranged on the opposite side of the electric wire 461 (voltage detection electric wire) at the base 482 of the detection terminal 480. However, the temperature detection element 471 is arranged on the same side as the electric wire 461. It may be.
  • the claw portion 358 is provided only on the second wall portion 355 far from the first wall portion 354 among the pair of second wall portions 355 and 356 has been illustrated, but the claw portion is It may be provided only on the second wall portion 356 near the first wall portion 354.
  • the claw portion 358 is provided only on the second wall portion 355 is illustrated, but the claw portion may be provided on each of the pair of second wall portions 355 and 356.
  • the detection member 450 has the cutout 484b, but the detection member does not need to have the cutout.
  • a member in which the temperature detection element 471 is integrated with the voltage detection member 460 is exemplified as the temperature detection member 470.
  • the voltage detection member and the temperature detection member may be separately attached to the holding member.
  • the mounting structure of this embodiment may be adopted for at least one of the voltage detection member and the temperature detection member.
  • the detection portion may be brought into contact with the surface of the container of the electricity storage element.
  • the exterior body 300 (the resin tray 301 and the holding member 302) is a tray and a bus bar frame that sandwich the plurality of power storage elements 100 and the plurality of spacers 200 in the Z-axis direction.
  • the holding member 302 may be an insulating member or the like on which electrical equipment (electrical components) such as a board, relay, fuse, thermistor, or harness is placed, instead of the bus bar frame.
  • the present invention can be applied to a power storage device, etc. equipped with a power storage element such as a lithium ion secondary battery.

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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)

Abstract

La présente invention concerne un dispositif de stockage d'énergie (1) qui comprend : un élément de détection (élément de détection de tension (460)) ayant une borne de détection (480) pour détecter un état d'un élément de stockage d'énergie (100) et un fil électrique (461) extrait de la borne de détection ; et un élément de maintien (302) qui est disposé sur l'élément de stockage d'énergie et qui maintient l'élément de détection. La borne de détection comprend : une section de détection (section de jonction de borne (487)), une section de base (482) à partir de laquelle le fil électrique est extrait, une section d'extrémité (483), une section intermédiaire (489) située entre la section de base et la section d'extrémité, et une section en saillie (484). La section de base, la section intermédiaire et la section d'extrémité sont disposées côte à côte dans une première direction. La section en saillie fait saillie à partir d'un côté de la section intermédiaire dans une deuxième direction croisant la première direction. L'élément de maintien comporte : une section griffe (358) disposée à une position chevauchant la section en saillie telle que vue dans une troisième direction croisant la première direction et la deuxième direction ; et une section en vis-à-vis (première section paroi (354)) disposée à une position adjacente à la section d'extrémité.
PCT/JP2023/027844 2022-08-03 2023-07-28 Dispositif de stockage d'énergie WO2024029472A1 (fr)

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JP2022124371 2022-08-03
JP2022-124371 2022-08-03

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021034352A (ja) * 2019-08-29 2021-03-01 住友電装株式会社 電池配線モジュール
WO2021079937A1 (fr) * 2019-10-23 2021-04-29 株式会社Ｇｓユアサ Dispositif de stockage électrique
JP2021106088A (ja) * 2019-12-26 2021-07-26 住友電装株式会社 電池配線モジュール

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021034352A (ja) * 2019-08-29 2021-03-01 住友電装株式会社 電池配線モジュール
WO2021079937A1 (fr) * 2019-10-23 2021-04-29 株式会社Ｇｓユアサ Dispositif de stockage électrique
JP2021106088A (ja) * 2019-12-26 2021-07-26 住友電装株式会社 電池配線モジュール

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