WO2020174953A1 - Dispositif de stockage d'électricité - Google Patents

Dispositif de stockage d'électricité Download PDF

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Publication number
WO2020174953A1
WO2020174953A1 PCT/JP2020/002273 JP2020002273W WO2020174953A1 WO 2020174953 A1 WO2020174953 A1 WO 2020174953A1 JP 2020002273 W JP2020002273 W JP 2020002273W WO 2020174953 A1 WO2020174953 A1 WO 2020174953A1
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WO
WIPO (PCT)
Prior art keywords
case
outer case
intermediate case
convex portion
power storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/002273
Other languages
English (en)
Japanese (ja)
Inventor
雄太 川井
修 牛嶌
拓矢 巽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GS Yuasa International Ltd
Original Assignee
GS Yuasa International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GS Yuasa International Ltd filed Critical GS Yuasa International Ltd
Publication of WO2020174953A1 publication Critical patent/WO2020174953A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a power storage device including a plurality of power storage elements and an outer case that houses the plurality of power storage elements.
  • Patent Document 1 discloses a battery unit (power storage device) having a configuration in which a plurality of single batteries (power storage elements) are housed in a housing case (exterior case).
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2 0 1 8 _ 6 3 9 15
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a power storage device that can be easily manufactured.
  • a power storage device is a power storage device including a plurality of power storage elements and an outer case that accommodates the plurality of power storage elements.
  • An intermediate case that is housed in the case and that houses the plurality of power storage elements is provided, and the intermediate case is bonded and fixed to the outer case.
  • the power storage device ⁇ 2020/174953 2 ⁇ (: 170? 2020 /002273
  • An intermediate case that is housed in the case and houses a plurality of power storage elements is provided, and the intermediate case is bonded and fixed to the outer case.
  • the plurality of power storage elements are temporarily accommodated in the intermediate case, and after the other members are attached to the intermediate case, the intermediate case is accommodated in the outer case. It may be easier to manufacture the power storage device.
  • the outer case includes an outer case body and an outer case lid body
  • the intermediate case includes an intermediate case body, and an intermediate case lid body
  • the intermediate case lid body May be arranged so as to face the exterior case body
  • the intermediate case lid of the intermediate case is arranged to face the outer case body of the outer case.
  • the orientation, shape, etc. of the storage element may not match the position of the outer case lid in the outer case.
  • the outer case lid is preferably placed at a high position to prevent water from entering, but the lid of the case that houses the storage element is placed on the side or bottom side of the case. May be preferable.
  • the power storage element is placed horizontally (sideways) (the electrode terminals of the power storage element are arranged facing the side wall of the outer case body), If the element is put into the outer case body, it will be difficult to connect the bus bar.
  • the intermediate case lid is arranged at a position facing the outer case body, not the outer case lid, so as to match the orientation and shape of the storage element. This allows the storage element to be housed in the intermediate case first and then housed in the outer case, so that the storage element can be easily housed in the outer case regardless of the position of the outer case lid.
  • the intermediate case has an intermediate case protrusion protruding toward the outer case
  • the front outer case has an outer case protrusion protruding toward the intermediate case.
  • the convex portion and the outer case convex portion may be arranged in contact with each other at positions facing each other, or may be arranged side by side at adjacent positions.
  • the intermediate case has the intermediate case convex portion
  • the outer case has the outer case convex portion
  • the intermediate case convex portion and the outer case convex portion face each other. Are arranged in contact with each other, or are arranged side by side in adjacent positions. Since the intermediate case and the outer case have the intermediate case convex portion and the outer case convex portion as described above, the intermediate case and the outer case can be reinforced.
  • the intermediate case convex part and the outer case convex part are arranged at the facing position or the adjacent position so that the intermediate case and the outer case can be easily positioned, or the intermediate case convex part and the outer case can be positioned. It is possible to easily fix the intermediate case and the outer case by bonding the case convex portion. This makes it easy to manufacture the power storage device.
  • the outer case includes an outer case body and an outer case lid, the outer case convex portion is formed on the outer case body, and the outer case body and the outer case lid are provided.
  • An outer case first convex portion extending in the direction of arrangement, the intermediate case convex portion extends along the outer case first convex portion, and is arranged side by side at a position adjacent to the outer case first convex portion.
  • the intermediate case first convex portion may be provided.
  • the outer case convex portion has the outer case first convex portion extending in the direction in which the outer case body and the outer case lid are arranged side by side, and the intermediate case convex portion is the outer casing. It has an intermediate case first convex portion that is adjacent to the outer case first convex portion along the case first convex portion.
  • the first protrusion intermediate case and the outer Soke _ scan first projections, extending in the arrangement direction of the outer casing body and the outer case lid ⁇ 2020/174953 4 ⁇ (: 170? 2020 /002273
  • an intermediate case body has a middle case lid, wherein the intermediate Ke _ scan first protrusion is two walls adjacent the intermediate Ke _ scan body It may be formed.
  • the intermediate case first convex portion is formed on two adjacent wall portions of the intermediate case body.
  • the strength of the two wall portions can be improved.
  • the stability during the assembly work can be enhanced. Accordingly, the assembly work can be easily performed, and thus the manufacturing of the power storage device can be facilitated.
  • the intermediate case convex portion is formed on a wall portion of the intermediate case, and has a plurality of intermediate case second convex portions arranged in a longitudinal direction of the wall portion, and the exterior case convex portion is It has a plurality of exterior case second convex portions that engage with the plurality of intermediate case second convex portions in the longitudinal direction, and at least one intermediate case second convex portion of the plurality of intermediate case second convex portions. May be extended and arranged in a direction intersecting with the longitudinal direction.
  • the intermediate case convex portion has a plurality of intermediate case second convex portions arranged in the longitudinal direction of the wall of the intermediate case
  • the outer case convex portion includes the plurality of intermediate case convex portions. It has a plurality of exterior case 2nd convex parts which engage with the 2nd convex part.
  • at least one second convex portion of the intermediate case is arranged so as to extend in a direction intersecting the longitudinal direction of the wall portion of the intermediate case. In this way, the plurality of intermediate case second convex portions aligned in the longitudinal direction of the wall of the intermediate case engage with the plurality of outer case second convex portions, so that the intermediate case moves in the longitudinal direction in the outer case. Suppress movement ⁇ 2020/174953 5 ⁇ (: 170? 2020 /002273
  • the intermediate case can do. Further, since at least one intermediate case second convex portion is extended in a direction intersecting the longitudinal direction, it is possible to further suppress the movement of the intermediate case in the outer case in the longitudinal direction. it can. Accordingly, the intermediate case can be prevented from moving and being damaged in the outer case, so that the power storage device capable of suppressing the damage can be easily manufactured.
  • At least one intermediate case second convex portion of the plurality of intermediate case second convex portions may have a concave portion and a rib provided in the concave portion.
  • At least one intermediate case second convex portion has a concave portion and a rib provided in the concave portion.
  • the recess is formed in at least one intermediate case second convex portion, and the rib is provided in the concave portion, whereby the strength of the intermediate case second convex portion can be increased. Therefore, the intermediate case second protrusion having the increased strength can effectively prevent the intermediate case from moving in the outer case.
  • an electric device arranged on the wall portion of the intermediate case on the longitudinal direction side may be provided.
  • the power storage device includes the electric device on the wall portion on the longitudinal direction side of the intermediate case.
  • the power storage device since the power storage device has the second intermediate case convex portion and the second outer case convex portion, it is possible to prevent the intermediate case from moving in the longitudinal direction in the outer case. It is a composition. Therefore, even in the configuration in which the electric device is arranged on the wall portion on the longitudinal direction side of the intermediate case, it is possible to prevent the electric device from being damaged. This makes it possible to easily manufacture a power storage device that can suppress damage.
  • the intermediate case convex portion has an intermediate case third convex portion that is disposed so as to face an end portion of a long side surface of any one of the plurality of power storage elements.
  • the exterior case convex portion may have an exterior case third convex portion that is disposed in contact with a position facing the intermediate case third convex portion.
  • the intermediate case convex portion is opposed to the end portion of the long side surface of the electric storage element. ⁇ 2020/174953 6 ⁇ (: 170? 2020/002273
  • the outer case convex portion has an outer case third convex portion
  • the outer case convex portion has an outer case third convex portion facing and abutting the intermediate case third convex portion.
  • the intermediate case third convex portion and the outer case third convex portion are arranged at the positions facing the end portions of the long side surface of the storage element, they face the central portion of the long side surface of the storage element.
  • a space is provided between the intermediate case and the outer case at the position where the light is applied.
  • the space can absorb the swelling, so that the intermediate case or the outer case is deformed or damaged, or the intermediate case and the outer case are fixed. Can be prevented from coming off. Therefore, a power storage device that can suppress damage can be easily manufactured.
  • each of the plurality of power storage elements includes two power storage elements whose long side surfaces are arranged side by side in a direction intersecting a direction in which the long side surfaces face, the intermediate case third convex portion and the At least one of the third protrusions of the outer case may be arranged so as to straddle the ends of the long side surfaces of the two power storage elements.
  • At least _ of the intermediate case third convex portion and the exterior case third convex portion straddles the ends of the long side surfaces of the two power storage elements arranged in a direction intersecting the direction in which the long side surfaces face. Are arranged.
  • the convex portion It is possible to form two spaces that absorb the swelling of the two storage elements. Therefore, it is possible to easily manufacture a power storage device that can suppress damage due to swelling of the two power storage elements.
  • the present invention can be realized not only as a power storage device but also as an outer case and an intermediate case included in the power storage device.
  • Fig. 1 is a perspective view showing an appearance of a power storage device according to an embodiment.
  • FIG. 2 is a perspective view showing the inside of the outer case with the main body and lid of the outer case separated in the power storage device according to the embodiment.
  • FIG. 3 is an exploded perspective view showing the internal structure of the outer case in the power storage device according to the embodiment in an exploded manner.
  • FIG. 4 is a plan view showing the configuration of the outer case body of the outer case according to the embodiment.
  • FIG. 5 is a perspective view showing the configuration of an outer case lid of the outer case according to the embodiment.
  • FIG. 6 is a perspective view showing the configuration of the intermediate case body of the intermediate case according to the embodiment.
  • FIG. 7 is a cross-sectional view showing the positional relationship between the outer case and the intermediate case according to the embodiment.
  • the longitudinal direction of the outer case (the facing direction of the short side surface of the outer case), the longitudinal direction of the intermediate case (the facing direction of the short side surface of the intermediate case), and the intermediate case
  • the X-axis direction is defined as the direction along which electrical equipment is arranged, the longitudinal direction of the lid of the storage element (opposite direction of the short side of the container), or the orientation of a pair of electrode terminals in one storage element.
  • the facing direction of the long side of the outer case, the alignment direction of the main body and lid of the intermediate case (the bottom of the intermediate case and the lid ⁇ 2020/174953 8 ⁇ (: 170? 2020/002273
  • the direction in which the lid of the intermediate case and the bus bar are aligned with respect to the storage element, or the direction in which the body of the storage element container and the lid are aligned is defined as the axial direction.
  • the direction in which the body of the outer case is aligned with the lid is defined as the axial direction.
  • the direction in which the body of the outer case is aligned with the lid is defined as the axial direction.
  • the X-axis direction, the vertical axis direction, and the axial direction are directions intersecting with each other (orthogonal in the present embodiment). Note that the axial direction may not be the vertical direction depending on the usage mode, but for convenience of description, the axial direction will be described as the vertical direction below. In the following description, for example, the plus side in the X-axis direction means
  • the side of the X axis in the direction of the arrow is shown, and the minus side of the X axis indicates the side opposite to the plus side of the X axis. The same applies to the axial direction and the axial direction.
  • FIG. 1 is a perspective view showing the appearance of power storage device 10 according to the present embodiment.
  • FIG. 2 is a perspective view showing the inside of outer case 100 with the main body and lid of outer case 100 separated in power storage device 100 according to the present embodiment.
  • FIG. 3 is an exploded perspective view showing the internal configuration of outer case 100 in the power storage device 10 according to the present embodiment in an exploded manner.
  • the power storage device 10 is a device capable of charging electricity from the outside and discharging the electricity to the outside.
  • the power storage device 10 is a battery module used for power storage, power supply, and the like.
  • the electricity storage device 10 is, for example, a vehicle such as an electric vehicle (Mimi), a hybrid electric vehicle (! ⁇ 1M) or a plug-in hybrid electric vehicle (1 ⁇ 1M), a motorcycle, It is used as a battery for driving or starting an engine such as watercraft, snowmobiles, agricultural machinery, and construction machinery.
  • the power storage device 10 includes an outer case 100 and an outer case. ⁇ 2020/174953 9 ⁇ (: 170? 2020/002273
  • the outer case 100 is a box-shaped (rectangular parallelepiped) container (module case) that constitutes the outer body of the power storage device 10. That is, the outer case 100 accommodates a plurality of power storage elements 300, a plurality of bus bars 400, electric devices 500, etc., and protects these power storage elements 300, etc. from external impacts and the like. ..
  • the outer case 100 is made of, for example, polycarbonate ( ⁇ ), polypropylene (), polyethylene (M), polyphenylene sulfide resin (3), polyphenylene ether (M (including modified M)), and polyethylene terephthalate. It is made of an insulating material such as a samurai or a eight resin.
  • the outer case 100 avoids electrically connecting the internal power storage element 300 or the like to an external conductive member such as a metal.
  • the outer case 100 may be formed of a conductive member such as a metal as long as the electric storage element 300 and the like can maintain the insulating property.
  • the outer case 100 is an outer case body 1100 forming the main body of the outer case 100 and a lid body of the outer case 100 (outer lid of the power storage device 10). And an outer case cover body 120 that constitutes the.
  • the outer case body 110 is a bottomed rectangular tubular housing having an opening formed on the plus side in the axial direction.
  • the outer case lid 120 is a flat rectangular shape that is placed on the axial plus side of the outer case body 110 and is connected to the outer case body 110 to close the opening of the outer case body 110. Is the lid.
  • the outer case main body 110 and the outer case lid body 120 may be formed of members made of the same material, or may be made of members made of different materials.
  • the outer case lid 120 is provided with an external terminal 130, which is a pair of module terminals (total terminals) on the positive side and the negative side, at the end on the positive side in the X-axis direction.
  • the external terminal 1300 is electrically connected to the storage element 300, and the storage device 1100 charges electricity from the outside through the external terminal 1300. ⁇ 2020/174953 10 ⁇ (: 170? 2020 /002273
  • the external terminal 130 is formed of a conductive member made of metal such as aluminum, aluminum alloy, copper, and copper alloy. A more detailed description of the structure of the outer case 100 will be given later.
  • the intermediate case 200 is a box-shaped (rectangular parallelepiped) container that constitutes the inner box of the electricity storage device 10. Specifically, the intermediate case 200 accommodates a plurality of power storage elements 300, and also accommodates a plurality of bus bars 400, electric devices 500, etc., so that they are accommodated in the outer case 100. The components to be held are integrally held.
  • the intermediate case 200 may be made of any material, but from the viewpoint of ensuring insulation, it is preferably made of an insulating member such as resin, and from the viewpoint of ensuring strength. Preferably, it is formed of a member having high strength such as metal.
  • ⁇ , ⁇ , ⁇ , ⁇ , ⁇ (including modified ⁇ ), ⁇ , or ⁇ 3 resin, etc. may be mentioned.
  • the metal include stainless steel, aluminum, aluminum alloy, iron, plated steel sheet and the like.
  • the intermediate case 200 is an intermediate case body 210 which constitutes the body of the intermediate case 200, and a lid body of the intermediate case 200 (inner lid of the power storage device 10). And an intermediate case lid 220 that constitutes the above.
  • the intermediate case body 210 is a bottomed rectangular tubular housing having an opening formed on the minus side in the axial direction.
  • the intermediate case lid 220 is arranged on the negative side in the axial direction of the intermediate case body 210, is connected to the intermediate case body 210, and is a flat surface that closes the opening of the intermediate case body 210. It is a rectangular lid. That is, the intermediate case lid 220 is arranged so as to face the outer case body 110 (specifically, the side wall portion of the outer case body 110 ). Further, the intermediate case lid 220 is arranged on the minus side of the storage element 300 in the direction of the vertical axis, and holds the bus bar 400 to control the position of the bus bar 400 etc. It also has a function as a (bus bar plate).
  • the intermediate case 200 is bonded and fixed to the outer case 100.
  • the intermediate case body 210 contacts the outer case body 110.
  • the intermediate case 200 is fixed to the outer case 100 by being bonded with a bonding agent or the like.
  • the intermediate case body 210 and the intermediate case lid 220 may be made of the same material, or may be made of different materials. A more detailed description of the configuration of Intermediate Case 200 is given below.
  • the storage element 300 is a secondary battery (single battery) capable of charging and discharging electricity, and more specifically, a non-aqueous electrolyte secondary battery such as a lithium ion secondary battery. It is the next battery.
  • Power storage element 300 has a flat rectangular (rectangular parallelepiped) shape, and in the present embodiment, eight power storage elements 300 (power storage element 300 0 300) are placed horizontally ( They are laid sideways and arranged in the X-axis and axial directions. Specifically, the storage elements 3003 to 300 are stacked (flat stacked) in the axial direction, and the storage elements 3006 to 300 are stacked (flat stacked) in the axial direction. , Storage element 3003 to 300 and storage element
  • the plurality of power storage elements 300 have long side surfaces (the long side surface 300 shown in FIG. 7).
  • the 13) has two storage elements 300 arranged side by side in a direction (X-axis direction) intersecting the direction (axial direction) in which the long side faces face. That is, for example, in the electricity storage device 3003 and the electricity storage device 3006, the surfaces on the plus side or the minus side in the axial direction (long side surfaces) are arranged side by side in the X axis direction. The same applies to the other storage elements 300 such as the storage element 300 and the storage element 300.
  • the number of power storage elements 300 is not particularly limited, and any number of power storage elements 300 may be stacked (flatly stacked) in the axial direction, or any number of power storage elements 300. May be arranged in the X-axis direction. Alternatively, only one storage element 300 may be arranged in the axial direction (not necessarily stacked in plural), or only one storage element 300 may be arranged in the X-axis direction. Good (it is not necessary to arrange multiple arrays).
  • the shape of the electricity storage device 300 is not limited to the above-mentioned prism, and may be a polygonal columnar shape, a columnar shape, an elliptical columnar shape, a long columnar shape, or the like, ⁇ 2020/174953 12 boxes (: 170? 2020/002273
  • power storage element 300 is not limited to the non-aqueous electrolyte secondary battery, and may be a secondary battery other than the non-aqueous electrolyte secondary battery, or may be a capacitor.
  • the storage element 300 may not be a secondary battery, but may be a secondary battery that can use stored electricity without being charged by the user. Further, the storage element 300 may be a battery using a solid electrolyte.
  • the electricity storage device 300 includes a container 301, and an electrode terminal 3O2 and a gas exhaust valve 3O3 are provided in a lid portion of the container 3Ol.
  • the lid of the container 301 may be provided with a liquid injection part for injecting the electrolytic solution.
  • an electrode body, a current collector (a positive electrode current collector and a negative electrode current collector), an electrolytic solution (a non-aqueous electrolyte), and the like are housed inside the container 301, but these are not shown. Omit it.
  • the type of the electrolytic solution as long as it does not impair the performance of the storage element 300, and various electrolytic solutions can be selected.
  • the container 301 is a rectangular (rectangular parallelepiped) container, and is formed of a metal member such as stainless steel, aluminum, aluminum alloy, iron, and a plated steel plate.
  • the electrode terminal 300 is a pair of metal terminals (protruding from the lid of the container 301, which is arranged to project toward the intermediate case lid 220 (toward the negative side in the axial direction) (positive terminal). And the negative electrode terminal). That is, the electrode terminal 302 is electrically connected to the positive electrode plate and the negative electrode plate of the electrode body through the current collector, and the electricity stored in the electrode body is led to the external space of the storage element 300. In addition, electricity is introduced into the internal space of the storage element 300 in order to store electricity in the electrode body.
  • the electrode terminal 302 is made of aluminum, aluminum alloy, copper, copper alloy, or the like.
  • the gas discharge valve 300 is a safety valve that discharges gas to release the pressure when the pressure inside the container 301 rises.
  • the electrode body is a power storage element (power generation element) formed by stacking a positive electrode plate, a negative electrode plate, and a separator.
  • the positive electrode plate included in the electrode body is one in which the positive electrode active material layer is formed on the positive electrode base material layer which is a long strip current collector foil made of metal such as aluminum or aluminum alloy.
  • the negative electrode plate is made of copper or copper alloy.
  • a negative electrode active material layer is formed on a negative electrode base material layer which is a long strip current collector foil made of metal such as gold.
  • the positive electrode active material used for the positive electrode active material layer and the negative electrode active material used for the negative electrode active material layer any known material can be appropriately used as long as it can absorb and release lithium ions.
  • the current collector is a member (positive electrode current collector and negative electrode current collector) having electrical conductivity and rigidity that is electrically connected to the electrode terminal 302 and the electrode body.
  • the positive electrode current collector is made of aluminum or an aluminum alloy as in the positive electrode substrate layer of the positive electrode plate, and the negative electrode current collector is made of copper or a copper alloy as in the negative electrode substrate layer of the negative electrode plate. Has been done.
  • a pair of end plates 3 10 are arranged at positions sandwiching the plurality of power storage elements 300 arranged in the axial direction.
  • the storage element 3003 to 300 which is lined up in the axial direction, is sandwiched (pressed) from both sides in the axial direction, so that the storage element 3003 and the storage element 300 are positive and negative in the axial direction.
  • a pair of flat plate-shaped end plates 3 10 are arranged on the side and the side.
  • the storage element 3006 and 300 II arranged in the axial direction are sandwiched (pressed) from both sides in the axial direction, so that the storage element 3006 and the storage element 300 are in the axial negative direction.
  • a pair of flat plate-shaped end plates 310 are arranged on the plus side.
  • the material of the end plate 310 is not particularly limited, but is formed of a metal member such as steel or stainless steel from the viewpoint of strength, for example.
  • an insulating sheet 320 is arranged on the side surface of the container 3001 of the electricity storage device 300. This ensures the insulation between the adjacent power storage elements 300 and between the power storage element 300 and the end plate 310.
  • the material of the insulation sheet 320 is not particularly limited as long as it can ensure the insulation required for the electricity storage device 300.
  • the bus bar 400 is arranged on the negative side in the vertical direction of the plurality of power storage elements 300 (the negative side in the vertical direction of the intermediate case lid 220), and the plurality of power storage elements 300 Is a rectangular plate-like member that electrically connects the electrode terminals 302 of.
  • the bus bar 400 is formed of a conductive member made of metal such as copper, copper alloy, aluminum, and aluminum alloy. In this embodiment, the bus bar 400 is ⁇ 2020/174953 14 ⁇ (: 170? 2020 /002273
  • the bus bar 400 By welding to the pole terminal 302, the bus bar 400 and the electrode terminal 302 are connected.
  • the bus bar 400 has two storage elements 300 connected in parallel to form four storage element groups consisting of two storage elements 300, and the four storage element groups are connected in series. Connected to. Note that the mode of connection of the power storage element 300 is not limited to the above, and series connection and parallel connection may be combined in any manner.
  • power storage elements 300 and 300II power storage element
  • Each of 300 0 and 300, power storage elements 300 3 and 300, and power storage elements 300 6 and 300 is connected in parallel.
  • the set of four storage elements 300 (storage element group) thus obtained is connected in series.
  • the bus bar 400 on the positive side in the X-axis direction and the positive side in the axial direction are connected to the positive electrode side electrode terminals 300 of the power storage elements 300 and 300, respectively. It Each of the negative electrode side electrode terminals 3002 of the storage elements 300 and 300 and the positive side electrode terminals 300 of each of the storage elements 300 and 300 are connected in the center in the X-axis direction and The bus bar 400 on the positive side in the axial direction is joined. The X-axis is connected to the negative electrode side terminal 3002 of each of the storage elements 300 and 300 and the positive side electrode terminal 302 of each of the storage elements 300 and 300. The bus bar 400 on the minus side in the direction is joined.
  • the X-axis is connected to the negative electrode terminal 30 2 of each of the storage elements 300 3 and 3 00 and the positive electrode terminal 30 2 of each of the storage elements 300 6 and 300.
  • the bus bar 400 on the center in the direction and on the minus side in the axial direction are joined.
  • the bus bars 400 on the X axis direction positive side and the axis direction minor side are joined to the negative electrode side electrode terminals 302 of the power storage elements 300 6 and 300.
  • the total positive terminals of the eight storage elements 300 are the bus bars 400 on the plus side in the X-axis direction and the plus side in the axial direction
  • the total negative terminals are the bus bars on the brass side in the X-axis direction and the minus side in the axial direction.
  • the bus bar 400 on the plus side in the X-axis direction and the bus bar 400 on the plus side in the axial direction are connected via the bus bar 52 0 on the plus side in the axial direction, the electric device 500, and the bus bar 5 10 on the minor side in the axial direction. , Connected to the positive side external terminal 1300 ⁇ 0 2020/174953 15 ⁇ (: 17 2020/002273
  • the bus bar 400 on the plus side and the minus side in the X-axis direction includes the bus bar 520 on the minus side in the axial direction, the control circuit board (not shown), and the bus bar 510 on the plus side in the axial direction. To the external terminal 130 on the negative electrode side.
  • the electric device 500 is an electric device arranged on the wall portion of the intermediate case 200 on the longitudinal direction (X-axis direction) side. Specifically, the electric device 500 is arranged on a wall portion of the intermediate case body 210 on the plus side in the X-axis direction (which is disposed on the intermediate case body side wall portion 211 1 0 described later, for example, a control board). , Electrical components for control such as fuses, relays, shunt resistors, connectors, etc. In addition, busbars 5 10 and 5 20 are connected to electrical equipment 5 00. Busbar 5 1 0 Is connected to the external terminal 1300 and electrically connects the electrical equipment 5300 to the external terminal 1300. The bus bar 5200 is connected to the bus bar 4100 and the electrical equipment 5 The electrical storage element 300 is electrically connected to 0 0. As a result, the external terminal 1300 and the storage element 300 are electrically connected.
  • FIG. 4 is a plan view showing the configuration of the outer case body 110 of the outer case 100 according to the present embodiment. Specifically, FIG. 4 is a plan view of the outer case body 110 as viewed from the plus side in the axial direction.
  • FIG. 5 is a perspective view showing the configuration of the outer case lid body 120 of the outer case 100 according to the present embodiment. Specifically, FIG. 5 is a perspective view of the outer case lid body 120 as viewed from diagonally below.
  • FIG. 6 is a perspective view showing a configuration of the intermediate case body 210 of the intermediate case 200 according to the present embodiment. Specifically, (3) of Fig. 6 is a perspective view of the intermediate case body 210 when viewed from diagonally above, and (13) of Fig. 6 shows the intermediate case body 210 from diagonally below. It is a perspective view at the time of seeing.
  • FIG. 7 is a sectional view showing the positional relationship between the outer case 100 and the intermediate case 200 according to the present embodiment. Specifically, in FIG. 7, the power storage device 10 shown in FIG. 1 is connected to the V supply unit VI connection unit. ⁇ 2020/174953 16 ⁇ (: 170? 2020/002273
  • the outer case body 110 includes an outer case body side wall portion 1 1 1 3 to 1 1 1, an outer case body bottom wall portion 1 1 1 1, and
  • the outer case has protrusions 1 12 and 1 13.
  • the outer case body side wall portions 1 1 1 1 3 and 1 1 1 1 0 are long side walls provided on both sides of the outer case body 1 1 0 in the axial direction and having long side surfaces of the outer case body 1 1 0.
  • the outer case body side wall portions 1 11 13 and 1 11 are short side walls provided on both sides of the outer case body 110 in the X-axis direction and having short side surfaces of the outer case body 110.
  • the outer case body bottom wall portion 1 1 1 1 6 is a bottom wall provided on the axially negative side of the outer case body 1 10 and having a bottom surface of the outer case body 1 10.
  • the outer case protrusions 1 12 are formed on the outer case body 110, and are long protrusions extending in the direction in which the outer case body 110 and the outer case lid 120 are arranged (axial direction). Is. Specifically, the outer case convex portion 1 12 is arranged so as to project from the outer case body side wall portion 1 1 1 3 to 1 1 1 0 inward of the outer case 1 0 0, as shown in FIG. As shown in, the convex part of the outer case 1 1 2 3 ⁇ 1
  • the outer case convex portion 1 1 2 3 is arranged so as to project from the outer case body side wall portion 1 1 1 3 toward the negative side in the axial direction.
  • the outer case convex portion 1 112 is arranged so as to project from the outer case main body side wall portion 11 1 toward the X axis direction plus side.
  • the outer case protrusion 1 1 Are arranged so as to project from the side wall portion 1 1 1 10 of the main body of the outer case toward the positive side in the axial direction.
  • the outer case convex portion 1 1 12 (the outer case convex portion 1 1 2 3 to 1 1 2 0) is an example of the outer case first convex portion.
  • the outer case convex portion 1 1 3 is formed from the outer case body bottom wall portion 1 1 1 6 to the outer case.
  • the outer case protrusions 1 1 3 are the outer case protrusions 1 1 3 3 arranged so as to surround the outer periphery of the outer case body bottom wall 1 1 1 6.
  • Exterior case Main body bottom wall 1 1 1 1 ⁇ The outer case that crosses the central position in the axial direction in the axial direction. ⁇ 2020/174953 17 ⁇ (: 170? 2020/002273
  • the outer case convex portion 1 13 (exterior case convex portion 1 1 3 3, 1 1 3 ⁇ ) is an example of the outer case third convex portion.
  • the outer case lid body 120 is a wall portion of the outer case lid body.
  • the outer case lid wall section 1 21 is a rectangular and flat plate portion that constitutes the main body of the outer case lid 1 20.
  • the outer case lid rib 1 2 1 3 is a reinforcing rib that protrudes from the outer case lid wall portion 1 2 1 toward the minus side in the axial direction, and extends in the X-axis direction and around the outer case convex portion 1 2 2. They are arranged in a grid pattern so as to extend in the axial direction.
  • the outer case convex portion 1 2 2 is formed from the outer case lid wall portion 1 2 1 to the outer case 1 0.
  • the outer case convex portion 1 2 2 3 is an elliptic ring-shaped protrusion that extends in the vertical axis direction, and is arranged at the end of the outer case lid body 120 on the negative side in the X axis direction.
  • the outer case convex portion 1 2 2 is a circular ring-shaped protrusion that extends in the axial direction with the same length as the outer case convex portion 1 2 2 3 and is located at the center of the outer case lid body 120 in the X-axis direction. It is located in.
  • the outer case protrusions 1 2 220 are the outer case protrusions 1 2 Also, it is an elliptical projection that extends in the axial direction with a length shorter than the length of 1 2 2 and is arranged at the end of the outer case lid 120 on the plus side in the X direction.
  • the outer case protrusions 122 (outer case protrusions 1 2 2 3 to 1 22 0) are an example of the outer case second protrusions.
  • the convex portion in the present embodiment also includes a protrusion projecting with respect to a specific reference surface, and a shape such as a bank or a bank.
  • a protrusion projecting with respect to a specific reference surface
  • a shape such as a bank or a bank.
  • the side wall of the concave portion and the like project from the bottom of the concave portion as a reference surface, and thus are included in the concept of the convex portion.
  • the entire surface on the minus side in the axial direction at the X-axis direction end and the end of the outer case lid 120 is covered by the outer case convex portion 1 22. ⁇ 2020/174953 18 ⁇ (: 170? 2020/002273
  • the inner case of the outer case convex portion 1 22 may be a concave portion.
  • the outer case convex portion 12 2 projects from the concave portion in a stepped shape, it can be included as the outer case convex portion 1 22 2 assuming that the stepped portion is the convex portion.
  • the intermediate case body 210 includes the intermediate case body side wall portions 2 1 1 3 to 2 11 and the intermediate case body bottom wall portion 2 1 1 6 and intermediate case convex portions 2 1 2, 2 1 4 and 2 1 5.
  • the intermediate case body rib 210 1 is formed on the outer surface of the intermediate case body 210, and the intermediate case body partition plate 2 11 9 is provided inside the intermediate case body 210. It has been done.
  • the intermediate case body side wall portions 2 1 1 1 3 and 2 1 1 1 0 are long side walls provided on both axial sides of the intermediate case body 2 1 0 and having long side surfaces of the intermediate case body 2 1 0.
  • the intermediate case body side wall portions 211 and 211 are short sidewalls provided on both sides of the intermediate case body 210 in the X-axis direction and having short side surfaces of the intermediate case body 210.
  • the intermediate case body ribs 2 1 1 are ribs for reinforcement formed on the outer surface of the intermediate case body side wall portions 2 1 1 3 and 2 1 1 and are located on the outer surface of the intermediate case body protrusions 2 1 2 and 2 1 4. They are arranged in a grid pattern around the periphery.
  • the intermediate case body partition plate 2 1 1 9 is a storage element And storage element
  • the intermediate case protrusion 2 12 is a protrusion that is formed on the wall of the intermediate case 200 and engages with the outer case protrusion 1 2 2 in the longitudinal direction (X-axis direction) of the wall. is there.
  • the intermediate case protrusion 2 1 2 as shown in (3) in FIG. 6, formed in the intermediate casing body sidewall portion 2 1 1 3, the longitudinal direction of the intermediate case body sidewall portion 2 1 1 3
  • It has intermediate case protrusions 2 1 2 3 to 2 1 2 0 arranged in the (X-axis direction).
  • at least one of the intermediate case convex portions 2 1 2 3 to 2 1 2 0 is provided with a direction (cross-axis direction) crossing the longitudinal direction (X-axis direction).
  • all the intermediate case protrusions 2 1 2 3 to 2 1 2 0 correspond to the exterior case protrusions 1 2 2 3 to 1 22 0 in the direction of the vertical axis. It has an elongated oval shape. Then, the intermediate case convex portions 2 1 2 3 to 2 1 2 0 are kneaded into the insides of the ring-shaped outer case convex portions 1 2 2 3 to 1 2 220, respectively. As a result, all the intermediate case protrusions 2 1 2 3 to 2 1 , Respectively, are configured to engage with the convex parts 1 2 2 1 2 220 of the outer case in the X-axis direction and the vertical axis direction (see Fig. 7). In addition, the convex part of the intermediate case It is preferable that they are arranged in contact with the corresponding outer case protrusions 1 2 2 3 to 1 2 220, respectively, or in the vicinity thereof even if they are not in contact.
  • the projections or rib-shaped tips employed as the projections in the present embodiment may be arranged in contact with the surface of the other party located in the projecting direction.
  • the intermediate case convex portion 2 12 shown in FIG. 7 is arranged axially away from the inner surface of the outer case lid body 120 in the present embodiment. It can be arranged so as to contact the inner surface of the lid 120.
  • the tip of the convex portion entirely abuts on the other party, and it may be that the tip abuts only partially. Furthermore, not only when the power storage device 10 is manufactured, but also after the product is shipped, due to, for example, the shape change of the power storage element 300 over time, the tip of the convex portion and the other end deform from the separated state to the contact state. I don't mind.
  • the intermediate case convex portion 2 12 is described as an example of the convex portion here, the state in which the tip of the convex portion is separated from or abutted against the counterpart is not limited to all the convex portions in the present embodiment. However, it is a configuration that can be commonly adopted arbitrarily.
  • At least one of the intermediate case protrusions 2 1 2 8 to 2 1 2 0 has an intermediate case protrusion in the intermediate case body recess 2 13 3 and the intermediate case body recess 2 1 3 3.
  • the intermediate case body ribs 2 1 3 are provided.
  • all of the intermediate case convex parts 2 1 2 3 to 2 1 2 0 are provided with an oval intermediate case main body concave part 2 1 3 3, and the intermediate case main body concave part 2 1 3 3
  • the intermediate case body ribs 2 1 3 having a circular shape are arranged.
  • the intermediate case protrusions 2 1 2 are examples of the intermediate case second protrusions.
  • the intermediate case protrusion 2 14 is formed on the wall of the intermediate case 2100, extends along the exterior case protrusion 1 1 2, and is arranged at a position adjacent to the exterior case protrusion 1 1 2. It is a protrusion that is placed in. Specifically, the intermediate case convex portion 2 14 is formed on two adjacent wall portions of the intermediate case main body 2 10. In other words, as shown in Fig. 6, the intermediate case protrusions 2 1 4 include four intermediate case protrusions 2 1 4 3 formed on the intermediate case body bottom wall 2 1 16 and the intermediate case body sidewall 2 It has two intermediate case protrusions 2 1 4 13 formed on the 1 1 sill.
  • the intermediate case protrusion 2 1 4 3 is a ladder-shaped protrusion that extends in the axial direction and that protrudes from the intermediate case body bottom wall 2 1 1 6 in the axially positive direction.
  • the intermediate case protrusions 2 1 4 3 extends along the outer casing protrusions 1 1 2 3, is arranged in a position in the X-axis direction adjacent to the outer casing protrusions 1 1 2 3. That is, each of the four intermediate case protrusions 2 1 4 3 is arranged between the two outer case protrusions 1 1 2 3 in the X-axis direction. It should be noted that each of the intermediate case protrusions 2 1 4 3 is placed in contact with the corresponding two outer case protrusions 1 1 2 3 or in the vicinity thereof even if they are not in contact. preferable.
  • the intermediate case convex portion 2 114 is a ladder-shaped projection extending in the axial direction and protruding from the intermediate case body side wall portion 2 1 1 negative in the X-axis direction. Further, the intermediate case convex portion 2 1 1 4 extends along the external case convex portion 1 1 2 and is arranged side by side in a position adjacent to the external case convex portion 1 1 2 2 in the axial direction. That is, each of the two intermediate case convex portions 2 1 4 claws is arranged between the two outer case convex portions 1 1 2 claws in the axial direction.
  • each of the intermediate case protrusions 2 114 is arranged in contact with the corresponding two outer case protrusions 1 112, or in the vicinity thereof even if they are not in contact.
  • Portion 2 1 4 (intermediate case convex portions 2 1 4 3, 2 1 4 ⁇ ) is an example of the intermediate case first convex portion.
  • the intermediate case convex portion 2 15 is formed on the wall portion of the intermediate case 200, and is provided at the end portion of the long side surface of any one of the plurality of power storage elements 300. It is a protruding portion that is arranged so as to face each other. Specifically, as shown in (13) of Fig. 6, the intermediate case convex portion 2 15 is a protruding portion that is formed on the intermediate case body side wall portion 2 110 and protrudes toward the axial minor side. , The storage elements 3003 and 3006 are arranged at positions facing the ends of the long side surfaces (long side surface 301 shown in FIG. 7). That is, the intermediate case convex portion 2 15 has rectangular annular protrusions that are arranged so as to face each other at a position surrounding the central portions of the long side surfaces of the electric storage elements 300 3 and 3 06.
  • the two intermediate case body concave portions 2 16 are formed by the intermediate case convex portions 2 15 at positions facing the central portions of the long side surfaces of the storage elements 300 3 and 300 mm. ing.
  • the two intermediate case body concave portions 2 16 are rectangular concave portions formed on both sides in the axial direction of the intermediate case main body side wall portion 2 110.
  • the intermediate case convex portion 2 15 forms an intermediate case main body concave portion 2 17 between the two intermediate case main body concave portions 2 16 and surrounds the intermediate case main body concave portions 2 16 and 2 17. Are formed with four intermediate case body recesses 218.
  • the intermediate case convex portion 2 15 is arranged so as to face the outer case main body bottom wall portion 1 11 16. Specifically, the intermediate case convex portion 2 15 is arranged at a position facing the outer case convex portion 1 1 3 (exterior case convex portion 1 1 3 3 and 1 1 3 cave), and the outer case convex portion It is placed in contact with parts 1 1 3 1.
  • the intermediate case body recessed portion 2 16 is arranged at a position facing the outer case body recessed portion 1 14 and the intermediate case body side wall portion 2 1 1 1 0 and the outer case body bottom wall portion 1 1 1 6 are arranged.
  • a space is formed between and. The space may be formed in the intermediate case body side wall 211 by forming a through hole instead of a recess at the position of the intermediate case body recess 2116.
  • the intermediate case body concave portion 2 17 is arranged at a position facing the outer case convex portion 1 13 and the intermediate case main body concave portion 2 18 is defined as the outer case convex portion 1 1 3 3 .
  • the adhesive body 600 is an adhesive. That is, an adhesive is applied to the inside of the recesses 2 17 and 2 18 of the intermediate case body, and the side wall portion 2 1 1 0 of the intermediate case body and the bottom wall portion 1 1 1 6 of the exterior case body are bonded. ..
  • an adhesive body other than an adhesive such as a double-sided tape may be used.
  • the convex portion 1 1 3 of the outer case forms the end on the positive side in the X-axis direction of the long side surface 3 0 1 3 of the storage element 300 3 and the long side surface 3 3 0 6 of the storage element 3 0 6. It is arranged so as to straddle the end of 0 1 3 on the negative side in the X-axis direction.
  • intermediate case main body side wall portion 211 is not formed with the intermediate case main body concave portion 2 17 and the intermediate case convex portion 2 15 is also formed on the long side surfaces 3 0 0 3 and 3 00 ⁇ . It may be arranged so as to straddle the end of 0 13.
  • the intermediate casing protrusions 2 1 5 is an _ example of the intermediate case the third convex portion.
  • the storage element 3 0 0 Is arranged so as to oppose the end of the long side surface 3 0 1 8 thereof, and is arranged across the end of the long side surface 3 0 1 3 of the two power storage elements 300.
  • the intermediate case convex portion 2 112 is provided at a position corresponding to the axial direction plus side of the intermediate case body partition plate 2 11 9 .
  • the rigidity of the intermediate case body 210 can be improved.
  • the intermediate case lid body 220 has an intermediate case lid body wall portion 2 2 1 and two intermediate case protrusion portions 2 2 2. ..
  • the intermediate case lid wall portion 2 21 is a rectangular flat plate-shaped portion that constitutes the main body of the intermediate case lid 2 20. At the position where the bus bar 400 of the intermediate case lid wall portion 2 21 is arranged, the intermediate case lid opening for connecting the bus bar 400 and the electrode terminal 30 2 of the storage element 300 is formed. Part 2 2 1 3 is formed.
  • the intermediate case convex portion 2 22 is a projection portion that extends in the axial direction, and an intermediate case lid body that discharges gas from the gas discharge valve 3 03 of the storage element 300 is provided at the axially positive side end portion. Openings 2 2 2 3 are formed respectively.
  • the intermediate case projection 2 22 2 is formed on the wall of the intermediate case 2 0 0, extends in the axial direction along the outer case projection 1 1 2, and then the outer case projection 1 2 1 and 2 are protrusions arranged side by side in the X-axis direction. More specifically, the intermediate case convex portion 2 22 is provided for each row of the electric storage elements 300 3 to 300 and the electric storage elements 300 6 to 300 arranged in the axial direction. It is a protruding portion that extends from the body wall portion 2 21 to the axially negative side and extends in the axial direction.
  • the intermediate case convex portion 2 22 extends along the outer case convex portion 1 120 and is arranged side by side in a position adjacent to the outer case convex portion 1 120 in the X-axis direction. That is, each of the two intermediate case convex portions 2 22 is arranged between the two outer case convex portions 1 1 2 0 in the X-axis direction. Note that each of the middle case protrusions 2 2 2 It is preferable that they are arranged in contact with each other, or even if they are not in contact, they are arranged in the vicinity.
  • the middle case convex portion 22 22 is an example of the middle case first convex portion.
  • the outer case 100 has the outer case protrusions 1 11 2, 1 1 3 and 1 2 2 which protrude toward the intermediate case 2 00.
  • the intermediate case 200 has intermediate case protrusions 2 1 4, 2 2 2, 2 1 5 and 2 1 2 that protrude toward the outer case 100.
  • the outer case protrusions 1 1 2, 1 1 3, 1 2 2 and the intermediate case protrusions 2 1 4, 2 2 2, 2 1 5 and 2 1 2 face each other. ⁇ 2020/174953 24 ⁇ (: 170? 2020 /002273
  • the intermediate case 200 which is housed in the outer case 100 and houses the plurality of power storage elements 300.
  • the intermediate case 200 is bonded and fixed to the outer case 100.
  • the intermediate case 200 is packaged. It may be easier to manufacture the power storage device 100 by housing it in the case 100.
  • it is necessary to fix the intermediate case 200 to the outer case 100 but for example, in bolt fastening, it is necessary to form a bolt hole or the number of parts increases and the assembly work becomes complicated. There are problems such as.
  • the intermediate case 200 is fixed to the outer case 100 by adhesion. Accordingly, since intermediate case 200 can be easily fixed to exterior case 100, manufacturing of power storage device 10 can be facilitated. Further, since the number of parts can be reduced, the weight of the power storage device 10 can be reduced.
  • the intermediate case lid body 220 of the intermediate case 200 is arranged so as to face the outer case body 110 of the outer case 100.
  • the orientation, shape, etc. of power storage element 300 do not match the position of outer case lid body 120 in outer case 100.
  • the outer case cover body 120 is arranged at a high position to prevent the intrusion of water, but the cover body of the intermediate case 200 for accommodating the storage element 300 is the intermediate case case 20. It may be preferable to be arranged on the side surface side or the bottom surface side of 0.
  • the storage device 300 0 is laid horizontally (sideways) (the electrode terminal 30 2 is arranged so as to face the side wall of the outer case body 110).
  • the electrode terminal 30 2 is arranged so as to face the side wall of the outer case body 110.
  • the intermediate case lid body 220 is not attached to the outer case lid body 120 so as to match the orientation and shape of the storage element 300.
  • the storage element 300 is housed in the intermediate case 200 and then housed in the outer case 100, the storage element 300 is stored regardless of the position of the outer case lid 120. 0 can be easily accommodated in the outer case 100. In this way, the power storage device 10 can be easily manufactured.
  • the intermediate case 200 has the intermediate case protrusions 2 1 2, 2 1 4, 2 1 5 and
  • the outer case 100 has the outer case convex portions 1 1, 2, 1 1 3 and 1 2 2.
  • the intermediate case convex portion and the exterior case convex portion are arranged in contact with each other at opposing positions, or arranged side by side at adjacent positions.
  • the intermediate case 200 and the outer case 100 have the intermediate case convex portion and the outer case convex portion, respectively.
  • the intermediate case convex portion and the outer case convex portion are arranged at positions facing each other or adjacent to each other, so that the intermediate case 200 and the outer case 100 can be easily positioned,
  • the intermediate case convex portion and the outer case convex portion can be adhered to each other to easily fix the intermediate case 200 and the external case 100. This can facilitate the manufacture of power storage device 10.
  • the outer case convex portion is composed of the outer case body 110 and the outer case lid body.
  • the outer case main body 1 110 has outer case first convex portions (exterior case convex portions 1 1, 2, 1 1 2 3 to 1 1 2 0) extending in the direction of arrangement of 1 2 0. Further, the intermediate case convex portion is adjacent to the external case first convex portion along the external case first convex portion (intermediate case convex portion 2 1 4, 2 1 4 3, 2 1 4 ⁇ ) In this way, the intermediate case first convex portion and the outer case first convex portion extend in the direction in which the outer case body 110 and the outer case lid body 120 are arranged, and are arranged side by side in adjacent positions. Therefore, it is a guide when inserting the intermediate case 200 into the outer case 100. For this reason, the intermediate case 200 can be easily put into the outer case 100, so that the power storage device 10 can be easily manufactured. ⁇ 2020/174953 26 ⁇ (: 170? 2020 /002273
  • the first convex portion intermediate case two adjacent walls of the intermediate case the body 2 1 0 (intermediate case body bottom wall 2 1 1 6 and the intermediate Ke - scan It is formed on the side wall of the main body.
  • the intermediate case first convex portion is formed on the two adjacent wall portions of the intermediate case body 210, the strength of the two wall portions can be improved.
  • it is necessary to carry out multiple assembly operations such as inserting the storage element 300 into the intermediate case 200 and attaching the bus bar 400 and electric equipment 500 to the bottom surface of the two walls.
  • the strength of the bottom surface that comes into contact with the ground can be improved when the operation is performed in the above condition. Accordingly, the stability during the assembly work can be improved, and the assembly work can be easily performed, so that the power storage device 10 can be easily manufactured.
  • the intermediate case convex portion includes a plurality of intermediate case second convex portions (intermediate case convex portion 2) arranged in the longitudinal direction of the wall portion (intermediate case body side wall portion 211 3 ) of the intermediate case 200. 1 2, 2 1 2 3 to 2 1 2 0)).
  • the outer case protrusion has a plurality of outer case second protrusions (outer case protrusions 1 2 2, 1 2 2 3 to 1 2 220) that engage with the plurality of intermediate case second protrusions.
  • at least one second intermediate case convex portion is arranged so as to extend in a direction intersecting the longitudinal direction of the wall portion of the intermediate case 200.
  • the plurality of intermediate case second convex portions arranged in the longitudinal direction of the wall portion of the intermediate case 200 engages with the plurality of outer case second convex portions, so that the intermediate case 200 is exteriorized. It is possible to suppress the movement in the longitudinal direction within 100. Further, since at least one intermediate case second convex portion extends in the direction intersecting with the longitudinal direction, the intermediate case 200 can move in the longitudinal direction within the outer case 100. Can be further suppressed. Accordingly, since it is possible to prevent intermediate case 200 from moving and being damaged in outer case 100, it is possible to easily manufacture power storage device 10 that can suppress the damage.
  • At least one of the intermediate case second convex portions is defined by the intermediate case body concave portion 21.
  • the strength of the intermediate case second convex portion can be increased. Therefore, it is possible to effectively suppress the movement of the intermediate case 200 in the outer case 100 by the second convex portion of the intermediate case having the increased strength.
  • power storage device 10 includes electric device 500 on a wall portion on the longitudinal direction side of intermediate case 200 (intermediate case body side wall portion 211.01).
  • the power storage device 10 has the intermediate case second convex portion and the outer case second convex portion, so that the intermediate case 200 moves in the longitudinal direction in the outer case 100. It is a structure that can suppress the action. Therefore, even if the electric device 500 is arranged on the wall portion of the intermediate case 200 on the longitudinal direction side, it is possible to prevent the electric device 500 from being damaged. This makes it possible to easily manufacture the power storage device 10 capable of suppressing damage.
  • the intermediate case convex portion has an intermediate case third convex portion (intermediate case convex portion 2 15) facing the end portion of the long side surface 30 01 3 of the electricity storage device 300
  • the outer case convex portion has an outer case third convex portion (exterior case convex portion 1 1 3, 1 1 3 3, 1 1 3 13) that faces and contacts the intermediate case third convex portion. ..
  • the electric storage element 30 A space is provided between the intermediate case 200 and the outer case 100 at a position facing the central portion of the long side surface 300 of 0.
  • At least one of the intermediate case third convex portion and the outer case third convex portion has the long side surface 30 of the two power storage elements 300 arranged in a direction intersecting the direction in which the long side surface 3001 faces. It is arranged across the edges of 13.
  • the third intermediate case ⁇ 2020/174953 28 ⁇ (: 170? 2020 /002273
  • At least one of the convex portion and the third convex portion of the outer case is arranged so as to straddle the ends of the long side surfaces 3001 of the two storage elements 300, so that the convex portion It is possible to form two spaces that absorb the swelling of one power storage element 300. Therefore, it is possible to easily manufacture the power storage device 10 capable of suppressing damage due to the two power storage elements 300 swelling.
  • the present invention is not limited to this embodiment. That is, the embodiments disclosed this time are illustrative and non-restrictive in all respects, and the scope of the present invention is shown by the scope of claims, and the meaning equivalent to the scope of claims and All changes within the range are included.
  • the intermediate case 200 and the outer case 100 are bonded to the intermediate case body side wall portion 211 and the outer case body bottom wall portion 1116. It was decided to be fixed by this.
  • the bonding position between the intermediate case 200 and the outer case 100 is not particularly limited, and they may be bonded at any position.
  • the recesses (intermediate case body recesses 217, 218) are formed in the intermediate case 200, and the adhesive body 600 is arranged in the recesses. I decided. However, in addition to the recess of the intermediate case 200, or instead of the recess of the intermediate case 200, a recess is formed in the outer case 100, and the adhesive body 600 is placed in the recess. You may decide to do it.
  • the intermediate case 200 is fixed to the outer case 100 by being adhered thereto by the adhesive 600.
  • the method of adhering the intermediate case 200 to the outer case 100 is not limited to the adhesion by the adhesive body 600, and may be welding (heat welding), welding, or the like. That is, any bonding method may be used as long as it is a method that is fixed by joining the facing surfaces of the intermediate case 200 and the outer case 100.
  • the intermediate case lid body 220 is the outer case body 1 ⁇ 2020/174953 29 ⁇ (: 170? 2020/002273
  • the intermediate case lid body 220 may be arranged so as to face the outer case body side wall portion 1 1 1 3, 1 11 1 or 1 1 1, or the outer case body bottom wall. It may be arranged so as to face the section 1 1 1 ⁇ . Further, the intermediate case lid body 220 may be arranged so as to face the outer case lid body 120.
  • the intermediate case first convex portion is the intermediate case body bottom wall portion 2 which is the two adjacent wall portions of the intermediate case body 2 10. It was decided to be formed on the side wall of the main case body 1 1 6 and the middle case body 2 1 1.
  • the first protrusion of the intermediate case has two adjacent wall portions of the intermediate case body 210 different from the above (the intermediate case body side wall portion 2 1 1 and the intermediate case body bottom wall portion 2 1 16 etc.). It may be formed in.
  • the first intermediate case convex portion may be formed not on the two adjacent wall portions of the intermediate case body 210 but on the two opposite wall portions of the intermediate case body 210. However, it may be formed only on one wall portion of the intermediate case body 210.
  • the _ protrusion intermediate case, an intermediate case 2 1 not 0, may be that it is formed in the intermediate case lid 2 2 0.
  • the two outer case second protrusions are oval shapes extending in a direction intersecting the longitudinal direction of the intermediate case 200, and We decided to arrange them side by side.
  • the number of the intermediate case second convex portions and the number of the outer case second convex portions are not particularly limited, and may be one or plural other than three.
  • the shape of the intermediate case second convex portion and the outer case second convex portion is not particularly limited, and may be a shape extending in a direction intersecting with the longitudinal direction other than an oval shape, The shape may be extended in the longitudinal direction.
  • the intermediate case main body concave portion 2 1 3 3 is formed in the intermediate case second convex portion (intermediate case convex portion 2 1 2 ), and the intermediate case main body concave portion 2 1 3 ⁇ 2020/174953 30 ⁇ (: 170? 2020/002273
  • the intermediate case body rib 2 13 was provided in 3 3.
  • the intermediate case body concave portion 2 1 3 3 may be formed on the intermediate case 2nd convex portion but the intermediate case body rib 2 13 3 may not be provided. It may be determined that 2 1 3 3 is not formed.
  • power storage device 10 is provided with electric device 500 on the wall portion on the longitudinal direction side of intermediate case 200.
  • power storage device 10 may include electric device 500 on any wall of intermediate case 200.
  • the power storage device 10 may not include the electric device 500.
  • At least one of the intermediate case third convex portion (intermediate case convex portion 2 15) and the outer case third convex portion (exterior case convex portion 1 13) is
  • the two storage elements 300 are arranged so as to straddle the ends of the long side surfaces. However, both the third intermediate convex portion of the intermediate case and the third convex portion of the exterior case may not extend over the ends of the long side surfaces of the two storage elements 300.
  • the intermediate case third convex portion and the outer case third convex portion may be arranged not to face the end portion of the long side surface of the storage element 300 but to face the central portion of the long side surface.
  • power storage element 300 is arranged in a horizontally placed (sideways) state.
  • the electricity storage device 300 may be arranged vertically.
  • the third intermediate case convex portion and the third external case convex portion should be arranged on the walls of the intermediate case 200 and the external case 100 facing the long side surface of the storage element 300.
  • the intermediate case 200 is fixed to the outer case 100 by being attached thereto.
  • the intermediate case 200 may or may not be fixed to the outer case 100 by bolting or the like, instead of being bonded to the outer case 100.
  • the present invention can be realized not only as the power storage device 10 but also ⁇ 2020/174953 31 ⁇ (: 170? 2020 /002273
  • the present invention can be applied to a power storage device including 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)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

Ce dispositif de stockage d'électricité comprend une pluralité d'éléments de stockage d'électricité 300 et un boîtier externe 100 qui loge la pluralité d'éléments de stockage d'électricité 300. Le dispositif de stockage d'électricité comprend un boîtier intermédiaire 200 qui est logé dans le boîtier extérieur 300 et qui loge la pluralité d'éléments de stockage d'électricité 300. Le boîtier intermédiaire 200 est fixé en étant collé au boîtier externe 100.
PCT/JP2020/002273 2019-02-27 2020-01-23 Dispositif de stockage d'électricité Ceased WO2020174953A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019034467 2019-02-27
JP2019-034467 2019-02-27

Publications (1)

Publication Number Publication Date
WO2020174953A1 true WO2020174953A1 (fr) 2020-09-03

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PCT/JP2020/002273 Ceased WO2020174953A1 (fr) 2019-02-27 2020-01-23 Dispositif de stockage d'électricité

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Country Link
WO (1) WO2020174953A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022169025A (ja) * 2021-04-27 2022-11-09 株式会社Ｇｓユアサ 蓄電装置
WO2026034030A1 (fr) * 2024-08-09 2026-02-12 パナソニックエナジー株式会社 Bloc-batterie

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217989A (ja) * 2008-03-07 2009-09-24 Nissan Motor Co Ltd 組電池
KR20140089067A (ko) * 2013-01-03 2014-07-14 삼성에스디아이 주식회사 배터리 팩
JP2015122265A (ja) * 2013-12-25 2015-07-02 株式会社豊田自動織機 電池モジュールの製造方法
CN206976450U (zh) * 2017-07-13 2018-02-06 北方奥钛纳米技术有限公司 电池模组的固定装置、电池箱及电动车
KR20190007745A (ko) * 2017-07-13 2019-01-23 주식회사 엘지화학 배터리 팩
JP2019083145A (ja) * 2017-10-31 2019-05-30 株式会社Ｇｓユアサ 蓄電装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217989A (ja) * 2008-03-07 2009-09-24 Nissan Motor Co Ltd 組電池
KR20140089067A (ko) * 2013-01-03 2014-07-14 삼성에스디아이 주식회사 배터리 팩
JP2015122265A (ja) * 2013-12-25 2015-07-02 株式会社豊田自動織機 電池モジュールの製造方法
CN206976450U (zh) * 2017-07-13 2018-02-06 北方奥钛纳米技术有限公司 电池模组的固定装置、电池箱及电动车
KR20190007745A (ko) * 2017-07-13 2019-01-23 주식회사 엘지화학 배터리 팩
JP2019083145A (ja) * 2017-10-31 2019-05-30 株式会社Ｇｓユアサ 蓄電装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022169025A (ja) * 2021-04-27 2022-11-09 株式会社Ｇｓユアサ 蓄電装置
WO2026034030A1 (fr) * 2024-08-09 2026-02-12 パナソニックエナジー株式会社 Bloc-batterie

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