WO2023140190A1 - 電池用パッケージおよび電池モジュール - Google Patents

電池用パッケージおよび電池モジュール Download PDF

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Publication number
WO2023140190A1
WO2023140190A1 PCT/JP2023/000782 JP2023000782W WO2023140190A1 WO 2023140190 A1 WO2023140190 A1 WO 2023140190A1 JP 2023000782 W JP2023000782 W JP 2023000782W WO 2023140190 A1 WO2023140190 A1 WO 2023140190A1
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WO
WIPO (PCT)
Prior art keywords
electrode
recess
insulating substrate
battery
lead terminal
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/JP2023/000782
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English (en)
French (fr)
Japanese (ja)
Inventor
孝太郎 中本
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.)
Kyocera Corp
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Kyocera Corp
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Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to US18/729,268 priority Critical patent/US20250118841A1/en
Priority to JP2023575228A priority patent/JP7789094B2/ja
Publication of WO2023140190A1 publication Critical patent/WO2023140190A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—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
    • H01M50/222—Inorganic material
    • 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
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • 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 disclosure relates to battery packages and battery modules for mounting cylindrical or laminate batteries.
  • cylindrical batteries have linear lead terminals. Therefore, it has been difficult to surface-mount a cylindrical battery on a mounting board. In recent years, it has been studied to mount a cylindrical battery on a package and then surface-mount the cylindrical battery on a mounting board.
  • the electronic component is mounted on the package with the linear lead terminals of the electronic component placed on the electrodes of the package (referred to as the joints of the external electrode terminals in Patent Document 1).
  • a battery package includes an insulating substrate having a first surface, a second surface located opposite to the first surface, and a recess opening in the first surface; a first external electrode located on the second surface; a second external electrode located on the second surface; a first electrode located on the inner surface of the recess and electrically connected to the first external electrode; Prepare.
  • a battery module includes the battery package, and a cylinder-type or laminate-type battery housed in the recess.
  • the battery has a first lead terminal electrically connected to the first electrode in a bent state and a second lead terminal electrically connected to the second electrode in a bent state.
  • FIG. 1A and 1B are a cross-sectional view and a plan view showing a battery module according to a first embodiment
  • FIG. FIG. 4A is a cross-sectional view and a plan view showing a battery module according to another aspect of the first embodiment
  • FIG. 4 is a schematic cross-sectional view showing a battery module according to another aspect of the first embodiment
  • FIG. 4 is a schematic cross-sectional view showing a battery module according to another aspect of the first embodiment
  • FIG. 4 is a schematic cross-sectional view showing a battery module according to another aspect of the first embodiment
  • FIG. 4A is a cross-sectional view and a plan view showing a battery module according to a second embodiment
  • FIG. 11 is a schematic cross-sectional view showing a battery module according to another aspect of the sixth embodiment
  • FIG. 11 is a schematic cross-sectional view showing a battery module according to another aspect of the sixth embodiment
  • FIG. 13A is a cross-sectional view and a plan view showing a battery module according to a seventh embodiment
  • FIG. 4 is a cross-sectional view showing a battery module according to another embodiment
  • Patent Document 1 If the technology described in Patent Document 1 is applied to a package in which a cylindrical battery is mounted, it becomes necessary to adjust the height of the junction between the lead terminal of the battery and the electrode of the package. As a result, assembly of a battery module including a cylindrical battery and a package is complicated, and there is a concern that the assembly of the battery module may be deteriorated.
  • the battery package and the battery module according to the embodiment will be described in detail with reference to the drawings.
  • each drawing referred to below shows only the constituent elements necessary for explaining the embodiment in a simplified manner.
  • the dimensions of the constituent elements in each drawing may not represent the actual dimensions of the constituent elements, the dimensional ratios of the respective members, and the like faithfully.
  • the lateral direction refers to a direction orthogonal to the thickness direction of the insulating substrate, in other words, a direction orthogonal to the depth direction of the concave portion of the insulating substrate.
  • Pressure contact means contact with pressure.
  • the rectangular shape is not limited to a strictly rectangular shape, and includes, for example, a shape that can be visually recognized as a rectangular shape as a whole even if the corners are curved.
  • a battery package 1 and a battery module 100 according to the first embodiment will be described with reference to the cross-sectional view and plan view of FIG.
  • the cross-sectional view of FIG. 1 is a schematic cross-sectional view along line II in the plan view of FIG. 1, and the plan view of FIG. 1 is a schematic plan view showing the battery module 100 according to the first embodiment.
  • the battery module 100 according to the first embodiment includes the battery package 1 according to the first embodiment and a cylindrical battery 200 mounted on the battery package 1.
  • the battery package 1 includes an insulating substrate 2, and the planar shape of the insulating substrate 2 may be rectangular, for example.
  • the insulating substrate 2 is made of ceramics such as aluminum oxide sintered body (alumina ceramics), aluminum nitride sintered body, mullite sintered body, or glass ceramics sintered body.
  • the insulating substrate 2 is composed of a plurality of laminated insulating layers or one insulating layer.
  • the insulating substrate 2 has a first surface 2a and a second surface 2b opposite to the first surface 2a.
  • the insulating substrate 2 has a recess 21 for housing the cylindrical battery 200, and the recess 21 opens to the first surface 2a.
  • the planar shape of the recess 21 of the insulating substrate 2 may be rectangular, for example.
  • the inner side surface of the recess 21 of the insulating substrate 2 may be parallel to the thickness direction of the insulating substrate 2 .
  • the planar view size of the recess 21 of the insulating substrate 2 may be slightly larger than the planar view size of the battery body 210 of the battery 200 .
  • the depth of recess 21 may be approximately the same as the thickness of battery body 210 of battery 200 .
  • the planar view shape of the recessed portion 21 of the insulating substrate 2 is not limited to a rectangular shape, and can be changed according to the shape of the battery body 210 of the battery 200 .
  • the first external electrode 3 may be positioned on one end side of the second surface 1 b of the insulating substrate 2 .
  • the first external electrode 3 may extend from the second surface 2b of the insulating substrate 2 to the side surfaces (including the corners between the side surfaces).
  • the first external electrode 3 may be electrically connectable to the first electrode of the mounting substrate via solder.
  • the first external electrode 3 is made of metal powder metallization containing tungsten (W), molybdenum (Mo), manganese (Mn), silver (Ag), copper (Cu), or the like.
  • the battery package 1 includes a second external electrode 4 located on the second surface 2b of the insulating substrate 2.
  • the second external electrode 4 may be positioned on the other end side of the second surface 2 b of the insulating substrate 2 .
  • the second external electrode 4 may extend from the second surface 2b of the insulating substrate 2 to the side surface.
  • the second external electrode 4 may be electrically connectable to the second electrode of the mounting substrate via solder.
  • the second external electrode 4 is made of the same metal powder metallization as the first external electrode 3 .
  • the battery package 1 includes a first electrode 5 located on the inner surface of the recess 21 of the insulating substrate 2, and the first electrode 5 is electrically connected to the first external electrode 3.
  • the first electrode 5 may extend along the depth direction of the recess 21 of the insulating substrate 2 (hereinafter referred to as the depth direction of the recess 21).
  • the first electrode 5 may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 .
  • the shape of the first electrode 5 viewed from the inside of the recess 21 of the insulating substrate 2 may be rectangular. It is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the battery package 1 has a second electrode 6 located on the inner side surface of the recess 21 of the insulating substrate 2 , and the second electrode 6 is electrically connected to the second external electrode 4 .
  • the second electrode 6 may extend along the depth direction of the recess 21 .
  • the second electrode 6 may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 .
  • the shape of the second electrode 6 viewed from the inside of the recess 21 of the insulating substrate 2 may be rectangular.
  • the first electrode 5 and the second electrode 6 may be arranged laterally.
  • the second electrode 6 is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the insulating substrate 2 may have a protrusion 22 located between the first electrode 5 and the second electrode 6 on the inner surface of the recess 21 .
  • the recess 21 of the insulating substrate 2 may have a protrusion 22 located between the first electrode 5 and the second electrode 6 on its inner surface.
  • the protrusion 22 of the insulating substrate 2 may extend along the depth direction of the recess 21 from the opening side of the recess 21 toward the bottom side.
  • the insulating substrate 2 may have a stepped portion 23 at the edge of the recess 21 .
  • a stepped surface 23 f of the stepped portion 23 of the insulating substrate 2 is located on the opening side of the recessed portion 21 with respect to the first electrode 5 and the second electrode 6 .
  • the stepped portion 23 of the insulating substrate 2 may be positioned along the entire circumference of the edge of the recess 21 .
  • the battery package 1 may include first connection wirings 7 that electrically connect the first electrodes 5 and the first external electrodes 3 .
  • the first connection wiring 7 may have a through conductor penetrating through one or more insulating layers and one or more wiring layers positioned between the insulating layers.
  • the first connection wiring 7 is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the battery package 1 may include a second connection wiring 8 that electrically connects the second electrode 6 and the second external electrode 4 .
  • the second connection wiring 8 may have one or more through conductors penetrating one or more insulating layers and one or more wiring layers positioned between the insulating layers.
  • the second connection wiring 8 is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the insulating substrate 2 is made of, for example, an aluminum oxide sintered body
  • the insulating substrate 2 is manufactured as follows.
  • Raw material powders such as aluminum oxide and silicon oxide are mixed with an appropriate organic binder and solvent to produce a slurry.
  • This slurry is formed into a sheet by a doctor blade method, a calender roll method, or the like to produce a ceramic green sheet for an insulating layer.
  • the ceramic green sheet for the insulating layer is subjected to a suitable punching process for forming holes such as recesses 21 with protrusions 22 and steps 23 .
  • a laminate for the insulating substrate 2 is manufactured by laminating a plurality of ceramic green sheets for insulating layers. After that, the insulating substrate 2 is produced by firing the laminated body for the insulating substrate 2 at a high temperature (approximately 1300 to 1600° C.).
  • the battery package 1 may include a frame portion 9 surrounding the concave portion 21 on the first surface 2 a of the insulating substrate 2 .
  • the frame portion 9 may have a frame-shaped metal film 91 positioned so as to surround the recess 21 on the first surface 2a of the insulating substrate 2, and a metal frame 92 bonded onto the frame-shaped metal film 91 with a brazing material.
  • the frame-shaped metal film 91 is made of the same metal powder metallization as the first external electrode 3 and the like.
  • As a constituent material of the metal frame 92 it is preferable to use a material having a small difference in thermal expansion from ceramics.
  • the battery package 1 may omit the metal frame 92 from the configuration of the frame portion 9 .
  • first external electrode 3, the second external electrode 4, the first electrode 5, the second electrode 6, the first connection wiring 7, the second connection wiring 8, and the frame-shaped metal film 91 are, for example, metallized layers of tungsten, they can be formed as follows.
  • the first external electrode 3, the second external electrode 4, the first electrode 5, the second electrode 6, the wiring layer of the first connection wiring 7, the wiring layer of the second connection wiring 8, and the frame-shaped metal film 91 are formed by printing a metal paste prepared by mixing tungsten powder with an organic solvent and an organic binder at predetermined positions of the ceramic green sheet for the insulating layer by a method such as screen printing, and then firing the laminate for the insulating substrate 2.
  • the through conductors of the first connection wiring 7 and the through conductors of the second connection wiring 8 are formed by providing through-conductor holes at predetermined positions in the ceramic green sheet for the insulating layer and filling the through-conductor holes with a metal paste.
  • a nickel plating layer/gold plating layer may be applied as a metal plating layer by a plating method such as electroplating or electroless plating to the surfaces of the first external electrode 3, the second external electrode 4, the first electrode 5, the second electrode 6, the first connection wiring 7, and the second connection wiring 8 that are exposed to the outside. This can effectively reduce corrosion of the first external electrode 3, the second external electrode 4, and the like.
  • the metal plating layer is not limited to nickel plating layer/gold plating layer, and may be other metal plating layers including nickel plating layer/palladium plating layer/gold plating layer and the like.
  • the battery package 1 may include a flat lid 10 that closes the opening of the frame 9 .
  • the plan view shape of the lid body 10 may be rectangular, for example.
  • the lid body 10 may have a shape other than a rectangular shape as long as it is a shape that can block the opening of the frame portion 9 .
  • the lid 10 is made of ceramics or metal, for example.
  • a material having a small difference in thermal expansion from ceramics such as an iron-nickel (Fe--Ni) alloy or an iron-nickel-cobalt (Fe--Ni--Co) alloy may be used.
  • the joining between the lid body 10 and the frame portion 9 may be, for example, joining using a joining material such as brazing material.
  • Lid 10 and frame 9 may be joined together using glass or brazing material as a joining material in order to improve the airtightness of battery module 100 .
  • a metal film having the same configuration as the frame-shaped metal film 91 may be positioned on the outer edge of the lower surface of the lid 10 .
  • the lid 10 made of metal and the metal frame 92 of the frame 9 may be joined by welding such as seam welding, for example, in order to improve the airtightness of the battery module 100 .
  • welding such as seam welding, direct seam welding, laser welding, or electron beam welding. Bonding using seam welding, direct seam welding, laser welding, or electron beam welding is bonding by local heating of the bonding portion, so the effect of heat on the battery 200 is smaller than when using brazing bonding, which is bonding by overall heating (reflow heating).
  • the battery package 1 When sealing the battery package 1, it may be hermetically sealed under a low dew point such as a nitrogen atmosphere, an argon atmosphere, or a vacuum atmosphere. As a result, since the environment around the cylindrical battery 200 can be maintained in a low dew point environment, it is possible to prevent moisture and oxygen from entering from the outside of the battery package 1 and reduce the risk of deterioration of the battery material of the battery 200. Moreover, before the battery package 1 is sealed, moisture inside the battery package 1 may be evaporated by pre-baking or the like.
  • a low dew point such as a nitrogen atmosphere, an argon atmosphere, or a vacuum atmosphere.
  • the battery module 100 includes a battery package 1 and cylindrical batteries 200 housed in recesses 21 of the insulating substrate 2 of the battery package 1 .
  • the cylindrical battery 200 may be bonded to the bottom surface of the recess 21 of the insulating substrate 2 with a bonding material such as a resin adhesive.
  • a cylindrical battery 200 has a battery body 210 and a linear first lead terminal 220 and a linear second lead terminal 230 protruding from one side of the battery body 210 .
  • the plan view shape of the battery main body 210 may be a rectangular shape.
  • a gap may be provided between the battery body 210 and the inner surface of the recess 21 of the insulating substrate 2 .
  • the first lead terminal 220 may be electrically connected to the first electrode 5 while being bent downward (toward the bottom surface of the recess 21 of the insulating substrate 2).
  • the second lead terminal 230 may be electrically connected to the second electrode 6 while being bent downward.
  • the first lead terminal 220 and the second lead terminal 230 may be bent so as to press against the first electrode 5 and the second electrode 6 by elastic force, respectively.
  • the first lead terminal 220 may be bonded to the first electrode 5 with a conductive bonding material J such as solder or conductive resin.
  • the second lead terminal 230 may be bonded to the second electrode 6 with a conductive bonding material J.
  • a part of the first lead terminal 220 and a part of the second lead terminal 230 may be bent in an arch shape so that the first lead terminal 220 and the second lead terminal 230 can effectively exert their respective elastic forces.
  • a portion of the first lead terminal 220 and the second lead terminal 230 may be bent into a coil shape.
  • the first electrode 5 and the second electrode 6 may be bent into appropriate shapes.
  • the first electrode 5 and the second electrode 6 are positioned on the inner side surface of the recess 21 of the insulating substrate 2 . Therefore, when the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent, the first lead terminal 220 and the second lead terminal 230 are electrically connected to the first electrode 5 and the second electrode 6, respectively. As a result, the cylindrical battery 200 can be mounted in the battery package 1 without adjusting the height of the joint (connecting portion) between the first lead terminal 220 and the first electrode 5 and the joint between the second lead terminal 230 and the second electrode 6. Therefore, according to the example of the first embodiment, it is possible to improve the assemblability of the battery module 100 including the battery package 1 and the battery 200 .
  • the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent. Therefore, the size of the concave portion 21 of the insulating substrate 2 can be reduced in plan view by the amount of bending of the first lead terminal 220 and the second lead terminal 230 .
  • the size of the battery package 1, in other words, the size of the battery module 100 can be reduced.
  • the conductive bonding material J for bonding the first lead terminal 220 to the first electrode 5 (hereinafter referred to as the conductive bonding material J for the first lead terminal 220) is less likely to drip onto the second electrode 6.
  • a conductive bonding material J for bonding the second lead terminal 230 to the second electrode 6 (hereinafter referred to as a conductive bonding material J for the second lead terminal 230 ) is less likely to drip onto the first electrode 5 .
  • the protrusion 22 When the protrusion 22 is positioned between the first electrode 5 and the second electrode 6 on the inner surface of the recess 21 of the insulating substrate 2, the conductive bonding material J for the first lead terminal 220 and the conductive bonding material J for the second lead terminal 230 are difficult to contact. Thereby, according to the example of the first embodiment, it is possible to reduce the possibility of a short circuit between the first electrode 5 and the second electrode 6 (action and effect regarding the protrusion 22).
  • the bonding area between the first lead terminal 220 and the first electrode 5 (bonding area between the conductive bonding material J and the first electrode 5) and the bonding area between the second lead terminal 230 and the second electrode 6 (bonding area between the conductive bonding material J and the second electrode 6) can be increased.
  • the bonding strength (bonding force) of the first lead terminal 220 to the first electrode 5 and the bonding strength of the second lead terminal 230 to the second electrode 6 can be increased. Therefore, according to the example of the first embodiment, the connection reliability of the battery module 100 can be improved.
  • the battery package 1 When the battery package 1 is provided with the lid 10, the battery package 1 can be hermetically sealed to reduce the possibility of moisture or the like entering the inside of the battery package 1.
  • the insulating substrate 2 is made of ceramics, the battery package 1 can be highly airtightly sealed, and the possibility of moisture or the like entering the battery package 1 can be further reduced.
  • deterioration of the cylindrical batteries 200 mounted in the battery package 1 can be suppressed, and the long-term durability (life) of the battery module 100 can be improved (action related to hermetic sealing).
  • the conductive bonding material J for the first lead terminal 220 and the conductive bonding material J for the second lead terminal 230 are less likely to come into contact with the frame portion 9 .
  • FIG. 2 is a schematic cross-sectional view along line II-II in the plan view of FIG.
  • the plan view of FIG. 2 is a schematic plan view showing a battery module 100 according to another aspect of the first embodiment.
  • 3 to 5 are schematic cross-sectional views showing battery modules 100 according to other aspects of the first embodiment.
  • the insulating substrate 2 may have depressions 24 and 25 positioned on the bottom surface of the recess 21 at locations corresponding to the first electrode 5 and the second electrode 6, respectively.
  • the depression 24 of the insulating substrate 2 may block the conductive bonding material J for the first lead terminal 220 .
  • the recess 25 of the insulating substrate 2 may block the conductive bonding material J for the second lead terminal 230 .
  • the first electrode 5 may extend to the inner surface of the recess 24 that is continuous with the inner surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5 may extend to the bottom surface of the recess 24 of the insulating substrate 2 .
  • the second electrode 6 may extend to the inner surface of the recess 25 that is continuous with the inner surface of the recess 21 of the insulating substrate 2 .
  • the second electrode 6 may extend to the bottom surface of the recess 25 of the insulating substrate 2 .
  • the recesses 24 and 25 of the insulating substrate 2 are formed by appropriately punching ceramic green sheets for insulating layers.
  • the conductive bonding material J for the first lead terminal 220 and the conductive bonding material J for the second lead terminal 230 it is difficult for the conductive bonding material J for the first lead terminal 220 and the conductive bonding material J for the second lead terminal 230 to come into contact with each other on the bottom surface of the recessed portion 21 of the insulating substrate 2.
  • the possibility of short-circuiting between the first electrode 5 and the second electrode 6 due to the conductive bonding material J spread over the bottom surface of the recess 21 of the insulating substrate 2 can be reduced.
  • the bonding area between the first lead terminal 220 and the first electrode 5 and the bonding area between the second lead terminal 230 and the second electrode 6 can be increased.
  • the bonding strength of the first lead terminal 220 to the first electrode 5 and the bonding strength of the second lead terminal 230 to the second electrode 6 can be increased. Therefore, according to another aspect of the first embodiment, the connection reliability of the battery module 100 can be further improved.
  • the insulating substrate 2 may have a second recess 26 that opens to the bottom surface of the recess 21 .
  • the second recessed portion 26 of the insulating substrate 2 is a recessed portion that can be engaged with the lower part of the battery body 210 of the cylindrical battery 200 .
  • the planar view shape of the second concave portion 26 of the insulating substrate 2 may be rectangular, for example.
  • the inner side surface of the second concave portion 26 of the insulating substrate 2 may be parallel to the thickness direction of the insulating substrate 2 .
  • the size of the second concave portion 26 of the insulating substrate 2 in plan view corresponds to the size of the battery main body 210 of the battery 200 .
  • the planar view shape of the second concave portion 26 of the insulating substrate 2 is not limited to a rectangular shape, and can be changed according to the shape of the battery body 210 of the battery 200 .
  • the cylindrical battery 200 in the battery module 100 is housed in the recess 21 of the insulating substrate 2 with the lower portion of the battery body 210 engaging with the second recess 26 of the insulating substrate 2 .
  • the cylindrical battery 200 may be bonded to the bottom surface of the second recess 26 of the insulating substrate 2 with a bonding material such as a resin adhesive.
  • the cylindrical battery 200 can be easily positioned with respect to the insulating substrate 2 by engaging the lower portion of the battery body 210 with the second concave portion 26 of the insulating substrate 2.
  • the first electrode 5 may extend from the central portion in the depth direction of the recess 21 of the insulating substrate 2 to the opening side of the recess 21 .
  • the second electrode 6 may extend from the central portion in the depth direction of the recess 21 of the insulating substrate 2 to the opening side of the recess 21 .
  • the second electrode 6 is shown overlapping the first electrode 5 .
  • the first lead terminal 220 may be electrically connected to the first electrode 5 while being bent upward (toward the opening of the recess 21 of the insulating substrate 2).
  • the second lead terminal 230 may be electrically connected to the second electrode 6 while being bent upward.
  • the first lead terminal 220 may be bonded to the first electrode 5 with a conductive bonding material J.
  • FIG. The second lead terminal 230 may be bonded to the second electrode 6 with a conductive bonding material J.
  • the first lead terminal 220 may be mechanically joined to the first electrode 5 without using the conductive joining material J.
  • the second lead terminal 230 may be mechanically joined to the second electrode 6 without using the conductive joining material J.
  • the inner side surface of the recessed portion 21 where the first electrode 5 and the second electrode 6 are located (referred to as the electrode-side inner side surface of the recessed portion 21) may be inclined outward with respect to the depth direction of the recessed portion 21.
  • the inner surface of the recess 21 facing the electrode-side inner surface may be inclined outward with respect to the depth direction of the recess 21 .
  • the battery 200 when the first electrode 5 and the second electrode 6 extend from the central portion of the recess 21 of the insulating substrate 2 in the depth direction to the opening side of the recess 21, the battery 200 can be inserted (accommodated) into the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent upward. As a result, the insertion resistance of the first lead terminal 220 or the second lead terminal 230 into the recess 21 of the insulating substrate 2 of the battery 200 can be reduced. Therefore, according to another aspect of the first embodiment, it is possible to further improve the assemblability of the battery module 100 including the battery package 1 and the batteries 200 .
  • the first electrode 5 and the second electrode 6 are inclined outward with respect to the depth direction of the recess 212. Therefore, the insertion resistance of the first lead terminal 220 or the second lead terminal 230 to the concave portion 21 of the insulating substrate 2 of the battery 200 can be further reduced. Therefore, according to the example of another aspect of the first embodiment, the assemblability of the battery module 100 can be further improved.
  • FIG. 6 is a schematic cross-sectional view taken along the line VI--VI in the plan view of FIG.
  • the plan view of FIG. 6 is a schematic plan view showing a battery module 100A according to the second embodiment.
  • the battery package 1A according to the second embodiment includes the battery package 1A according to the second embodiment and a cylindrical battery 200 mounted on the battery package 1A.
  • a battery package 1A according to the second embodiment has the same configuration as the battery package 1 according to the first embodiment except for a part of the configuration.
  • the configuration different from that of the battery package 1 according to the first embodiment will be described.
  • members having the same functions as the members explained in the first embodiment are denoted by the same reference numerals.
  • the battery package 1A has a first electrode 5A positioned on the inner side surface of the recess 21 of the insulating substrate 2, and the first electrode 5A corresponds to the first electrode 5 of the battery package 1.
  • the first electrode 5 ⁇ /b>A may be a metal body filled in an elongated groove 27 opening on the inner side surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5A may extend to the upper end of the groove 27 of the insulating substrate 2 (the end on the stepped portion 23 side).
  • the groove 27 of the insulating substrate 2 may extend along the depth direction of the recess 21 .
  • the groove 27 of the insulating substrate 2 may extend to the opening side of the recess 21 .
  • the first electrode 5A may extend along the depth direction of the recess 21 .
  • the first electrode 5A may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5A is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 27 of the insulating substrate 2 is not limited to an elongated shape.
  • the battery package 1A has a second electrode 6A positioned on the inner side surface of the recess 21 of the insulating substrate 2, and the second electrode 6A corresponds to the second electrode 6 of the battery package 1.
  • the second electrode 6 ⁇ /b>A may be a metal body filled in an elongated groove 28 opening on the inner side surface of the recess 21 of the insulating substrate 2 .
  • the groove 28 of the insulating substrate 2 may extend along the depth direction of the recess 21 . It may extend to the opening side of the groove 28 of the insulating substrate 2 and the recess 21 .
  • the second electrode 6A may extend along the depth direction of the recess 21 .
  • the second electrode 6A may extend up to the upper end of the groove 28 of the insulating substrate 2 .
  • the second electrode 6A may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 . 5 A of 1st electrodes and 6 A of 2nd electrodes may be located in a line with a horizontal direction.
  • the second electrode 6A is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 28 of the insulating substrate 2 is not limited to an elongated shape.
  • the grooves 27 and 28 of the insulating substrate 2 are formed by appropriately punching ceramic green sheets for insulating layers.
  • the first electrode 5A and the second electrode 6A are made of, for example, tungsten metal powder metallization
  • the first electrode 5A and the second electrode 6A are formed by filling metal paste into holes corresponding to the grooves 27 and 28 formed at predetermined positions of the ceramic green sheet for the insulating layer, and punching out a part of the hole.
  • a metal plating layer such as a nickel plating layer/gold plating layer may be applied to the exposed surfaces of the first electrode 5A and the second electrode 6A by a plating method such as an electrolytic plating method or an electroless plating method.
  • the first electrode 5A and the second electrode 6A may each extend to the bottom surface of the recess 21 of the insulating substrate 2, as shown in the cross-sectional view and plan view of FIG.
  • the portions of the first electrode 5A and the second electrode 6A that extend along the bottom surface of the recess 21 of the insulating substrate 2 are formed by printing at predetermined positions on the ceramic green sheet for the insulating layer by a method such as screen printing, like the first connection wiring 7.
  • the portion of the first connection wiring 7 extending to the bottom surface of the recess 21 may be the portion extending along the bottom surface of the first electrode 5A.
  • the protrusion 22 of the insulating substrate 2 may be located between the first electrode 5A and the second electrode 6A on the inner surface of the recess 21. Further, the stepped portion 23 of the insulating substrate 2 may be positioned closer to the opening of the recess 21 than the first electrode 5A and the second electrode 6A at the edge of the recess 21 .
  • the lid 10 made of metal may be joined to the frame-shaped metal film 91 by welding such as seam welding, direct seam welding, laser welding, or electron beam welding. Bonding using seam welding, direct seam welding, laser welding, or electron beam welding is bonding by local heating of the bonding portion, so the effect of heat on the battery 200 is smaller than when using brazing bonding, which is bonding by overall heating (reflow heating).
  • the first lead terminal 220 may be bent downward and electrically connected to the first electrode 5A, as in the example shown in the cross-sectional view and plan view of FIG.
  • the second lead terminal 230 may be electrically connected to the second electrode 6A while being bent downward.
  • the first lead terminal 220 may be bonded to the first electrode 5A with a conductive bonding material J.
  • FIG. The second lead terminal 230 may be bonded to the second electrode 6A with a conductive bonding material J.
  • the technology applied to the battery package 1 according to another aspect of the first embodiment shown in FIG. 3 may be applied to the battery package 1A.
  • the first electrode 5A and the second electrode 6A are positioned on the inner side surface of the recess 21 of the insulating substrate 2. Therefore, when the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent, the first lead terminal 220 and the second lead terminal 230 are electrically connected to the first electrode 5A and the second electrode 6A, respectively. As a result, the cylindrical battery 200 can be mounted in the battery package 1A without adjusting the height of the joint between the first lead terminal 220 and the first electrode 5A and the joint between the second lead terminal 230 and the second electrode 6A. Therefore, according to the example of the second embodiment, it is possible to improve the assemblability of the battery module 100A including the battery package 1A and the battery 200.
  • the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent. Therefore, the size of the concave portion 21 of the insulating substrate 2 can be reduced in plan view by the amount of bending of the first lead terminal 220 and the second lead terminal 230 .
  • the bonding area between the first lead terminal 220 and the first electrode 5A (bonding area between the conductive bonding material J and the first electrode 5A) and the bonding area between the second lead terminal 230 and the second electrode 6A (bonding area between the conductive bonding material J and the second electrode 6A) can be increased.
  • the bonding strength of the first lead terminal 220 to the first electrode 5A and the bonding strength of the second lead terminal 230 to the second electrode 6A can be increased. Therefore, according to the example of the second embodiment, the connection reliability of the battery module 100A can be improved.
  • the bonding area between the first lead terminal 220 and the first electrode 5A and the bonding area between the second lead terminal 230 and the second electrode 6A can be increased.
  • the bonding interfaces between the conductive bonding material J and the first electrode 5A and the second electrode 6A are multifaceted (bent surfaces).
  • the bonding area between the first electrode 5A and the insulating substrate 2 and the bonding area between the second electrode 6A and the insulating substrate 2 can be increased.
  • the bonding strength of the first electrode 5A to the insulating substrate 2 and the bonding strength of the second electrode 6A to the insulating substrate 2 can be increased. Therefore, according to the example of the second embodiment, it is possible to improve the long-term reliability of the battery module.
  • the effects related to short-circuit avoidance due to the dripping of the conductive bonding material J, the effects related to airtight sealing, the effects related to the projections 22, and the effects related to the stepped portion 23 are achieved.
  • FIG. 7 is a schematic cross-sectional view showing a battery module 100A according to another aspect of the second embodiment.
  • the first electrode 5A may extend from the central portion in the depth direction of the recess 21 of the insulating substrate 2 to the opening side of the recess 21 .
  • the second electrode 6A may extend from the central portion of the recess 21 of the insulating substrate 2 in the depth direction to the opening side of the recess 21 .
  • the second electrode 6A is shown overlapping the first electrode 5B.
  • the insulating substrate 2 may have a second recess 26 that opens to the bottom surface of the recess 21 .
  • the second recessed portion 26 of the insulating substrate 2 is a recessed portion that can be engaged with the lower part of the battery body 210 of the cylindrical battery 200 .
  • the planar view shape of the second concave portion 26 of the insulating substrate 2 may be rectangular, for example.
  • the inner side surface of the second concave portion 26 of the insulating substrate 2 may be parallel to the thickness direction of the insulating substrate 2 .
  • the size of the second concave portion 26 of the insulating substrate 2 in plan view corresponds to the size of the battery main body 210 of the battery 200 .
  • the planar view shape of the second concave portion 26 of the insulating substrate 2 is not limited to a rectangular shape, and can be changed according to the shape of the battery body 210 of the battery 200 .
  • the first lead terminal 220 may be electrically connected to the first electrode 5A while being bent upward.
  • the second lead terminal 230 may be electrically connected to the second electrode 6A while being bent upward.
  • the first lead terminal 220 may be bonded to the first electrode 5A with a conductive bonding material J.
  • FIG. The second lead terminal 230 may be bonded to the second electrode 6A with a conductive bonding material J.
  • the first lead terminal 220 may be mechanically joined to the first electrode 5A without using the conductive joining material J.
  • the second lead terminal 230 may be mechanically joined to the second electrode 6A without using the conductive joining material J.
  • the battery 200 can be inserted (accommodated) into the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent upward.
  • the insertion resistance of the first lead terminal 220 or the second lead terminal 230 into the recess 21 of the insulating substrate 2 of the battery 200 can be reduced. Therefore, according to another aspect of the second embodiment, it is possible to further improve the assemblability of the battery module 100A including the battery package 1A and the battery 200.
  • FIG. 8 is a schematic cross-sectional view along line VIII-VIII in the plan view of FIG.
  • the plan view of FIG. 8 is a schematic plan view showing a battery module 100B according to the third embodiment.
  • the battery package 1B according to the third embodiment includes the battery package 1B according to the third embodiment and a cylindrical battery 200 mounted on the battery package 1B.
  • a battery package 1B according to the third embodiment has the same configuration as the battery package 1 according to the first embodiment except for a part of the configuration.
  • the configuration of the battery package 1B according to the third embodiment the configuration different from that of the battery package 1 according to the first embodiment will be described.
  • members having the same functions as the members explained in the first embodiment are denoted by the same reference numerals.
  • the battery package 1B has a first electrode 5B positioned on the inner side surface of the recess 21 of the insulating substrate 2, and the first electrode 5B corresponds to the first electrode 5 of the battery package 1.
  • the first electrode 5 ⁇ /b>B may be a metal film (metal layer) positioned along the inner surface of the elongated groove 27 opening on the inner surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5B may extend along the depth direction of the recess 21 .
  • the first electrode 5B may extend up to the upper end of the groove 27 of the insulating substrate 2 .
  • the first electrode 5 ⁇ /b>B may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5B may extend to the bottom surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5B is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 27 of the insulating substrate 2 is not limited to an elongated shape.
  • the battery package 1B has a second electrode 6B positioned on the inner surface of the recess 21 of the insulating substrate 2, and the second electrode 6B corresponds to the second electrode 6 of the battery package 1.
  • the second electrode 6 ⁇ /b>B may be a metal film (metal layer) along the inner surface of an elongated groove 28 opening on the inner surface of the recess 21 of the insulating substrate 2 .
  • the second electrode 6B may extend along the depth direction of the recess 21 .
  • the second electrode 6B may extend up to the upper end of the groove 28 of the insulating substrate 2 .
  • the second electrode 6 ⁇ /b>B may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5B and the second electrode 6B may be arranged horizontally.
  • the second electrode 6B is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 28 of the insulating substrate 2 is not limited to an elongated shape.
  • the first electrode 5B and the second electrode 6B are formed on the inner surfaces of the grooves 27 and 28 of the insulating substrate 2 by hole printing, for example.
  • the method of forming the first electrode 5B and the second electrode 6B is not limited to hole printing, and may be, for example, coating, vapor deposition, or other techniques.
  • a metal plating layer such as a nickel plating layer/gold plating layer may be applied to the exposed surfaces of the first electrode 5B and the second electrode 6B by a plating method such as an electrolytic plating method or an electroless plating method.
  • the first electrode 5B and the second electrode 6B may each extend to the bottom surface of the recess 21 of the insulating substrate 2, as in the example shown in the cross-sectional view of FIG.
  • the portions of the first electrode 5B and the second electrode 6B that extend to the bottom surface of the recess 21 of the insulating substrate 2 are formed by printing at predetermined positions on the ceramic green sheet for the insulating layer by a method such as screen printing, like the first electrode 5.
  • the wiring layer of the first connection wiring 7 may extend from the first electrode 5B side to the bottom surface of the recess 21 of the insulating substrate 2 .
  • the wiring layer of the second connection wiring 8 may extend from the second electrode 6B side to the bottom surface of the recess 21 of the insulating substrate 2 .
  • the protrusion 22 of the insulating substrate 2 may be located between the first electrode 5B and the second electrode 6B on the inner surface of the recess 21. Moreover, the stepped portion 23 of the insulating substrate 2 may be positioned closer to the opening of the recess 21 than the first electrode 5B and the second electrode 6B at the edge of the recess 21 . In the battery package 1B, the protrusion 22 may be omitted from the configuration of the insulating substrate 2. FIG.
  • the first lead terminal 220 may be bent downward and inserted into the groove 27 of the insulating substrate 2 to be electrically connected to the first electrode 5B.
  • the second lead terminal 230 may be bent downward and inserted into the groove 28 of the insulating substrate 2 to be electrically connected to the second electrode 6B.
  • the first lead terminal 220 may be bonded to the first electrode 5B with a conductive bonding material J.
  • FIG. The second lead terminal 230 may be bonded to the second electrode 6B with a conductive bonding material J.
  • the technology applied to the battery package 1 according to another aspect of the first embodiment shown in FIG. 3 may be applied to the battery package 1B.
  • the first electrode 5B and the second electrode 6B are positioned on the inner side surface of the recess 21 of the insulating substrate 2. Therefore, when the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent, the first lead terminal 220 and the second lead terminal 230 are electrically connected to the first electrode 5B and the second electrode 6B, respectively. As a result, the cylindrical battery 200 can be mounted in the battery package 1B without adjusting the heights of the junction between the first lead terminal 220 and the first electrode 5B and the junction between the second lead terminal 230 and the second electrode 6B. Therefore, according to the example of the third embodiment, it is possible to improve the assemblability of the battery module 100B including the battery package 1B and the battery 200.
  • the first lead terminal 220 and the second lead terminal 230 when the first lead terminal 220 and the second lead terminal 230 are inserted into the grooves 27 and 28 of the insulating substrate 2 respectively, the first lead terminal 220 and the second lead terminal 230 can be easily positioned with respect to the insulating substrate 2. Further, when the grooves 27 and 28 of the insulating substrate 2 extend toward the opening of the recess 21, the first lead terminal 220 and the second lead terminal 230 can be easily inserted into the grooves 27 and 28 of the insulating substrate 2, respectively. Therefore, according to the example of the third embodiment, it is possible to further improve the assemblability of the battery module 100B.
  • the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent. Therefore, the size of the concave portion 21 of the insulating substrate 2 can be reduced in plan view by the amount of bending of the first lead terminal 220 and the second lead terminal 230 . Furthermore, when the first lead terminal 220 and the second lead terminal 230 are inserted into the grooves 27 and 28 of the insulating substrate 2, respectively, the recess 21 of the insulating substrate 2 can be made smaller in plan view by the amount of insertion of the first lead terminal 220 and the second lead terminal 230. Thus, according to the example of the third embodiment, it is possible to reduce the size of the battery package 1B, in other words, to reduce the size of the battery module 100B.
  • the first lead terminal 220 and the second lead terminal 230 are inserted into the grooves 27 and 28 of the insulating substrate 2 respectively, the first lead terminal 220 and the second lead terminal 230 are difficult to contact. Thereby, according to the example of the third embodiment, it is possible to reduce the possibility of a short circuit between the first electrode 5B and the second electrode 6B.
  • the bonding strength of the first lead terminal 220 to the first electrode 5B can be increased.
  • the bonding strength of the second lead terminal 230 to the second electrode 6B can be increased. Therefore, according to the example of the third embodiment, it is possible to improve the connection reliability of the battery module 100B.
  • the bonding area between the first lead terminal 220 and the first electrode 5B (bonding area between the conductive bonding material J and the first electrode 5B) and the bonding area between the second lead terminal 230 and the second electrode 6B (bonding area between the conductive bonding material J and the second electrode 6B) can be increased.
  • the bonding strength of the first lead terminal 220 to the first electrode 5B and the bonding strength of the second lead terminal 230 to the second electrode 6B can be further increased. Therefore, according to the example of the third embodiment, it is possible to further improve the connection reliability of the battery module 100B.
  • the bonding area between the first lead terminal 220 and the first electrode 5B and the bonding area between the second lead terminal 230 and the second electrode 6B can be further increased.
  • the bonding strength of the first lead terminal 220 to the first electrode 5B and the bonding strength of the second lead terminal 230 to the second electrode 6B can be increased. Therefore, according to the example of the third embodiment, it is possible to improve the connection reliability of the battery module 100B.
  • the bonding area between the first electrode 5B and the insulating substrate 2 and the bonding area between the second electrode 6B and the insulating substrate 2 can be increased.
  • the bonding strength of the first electrode 5B to the insulating substrate 2 and the bonding strength of the second electrode 6B to the insulating substrate 2 can be increased. Therefore, according to the example of the third embodiment, it is possible to improve the long-term reliability of the battery module 100B.
  • the effects related to short-circuit avoidance due to the dripping of the conductive bonding material J, the effects related to hermetic sealing, the effects related to the protrusions 22, and the steps 23 are achieved.
  • FIG. 9 is a schematic cross-sectional view along line IX-IX in the plan view of FIG.
  • the plan view of FIG. 9 is a schematic plan view showing a battery module 100B according to another aspect of the third embodiment.
  • the lid body 10 made of metal may be joined to the frame-shaped metal film 91 by welding such as seam welding, direct seam welding, laser welding, or electron beam welding. Bonding using seam welding, direct seam welding, laser welding, or electron beam welding is bonding by local heating of the bonding portion, so the effect of heat on the battery 200 is smaller than when using brazing bonding, which is bonding by overall heating (reflow heating).
  • the first lead terminal 220 may be electrically connected to the first electrode 5B while being folded back and bent upward, as in the example shown in the cross-sectional view and plan view of FIG.
  • the first lead terminal 220 may be electrically connected to the first electrode 5 ⁇ /b>B while being bent multiple times and inserted into the groove 27 of the insulating substrate 2 .
  • the second lead terminal 230 may be electrically connected to the second electrode 6B in a state of being folded back and bent upward.
  • the second lead terminal 230 may be electrically connected to the second electrode 6B while being bent multiple times and inserted into the groove 28 of the insulating substrate 2 .
  • the first lead terminal 220 when the first lead terminal 220 is folded upward and is electrically connected to the first electrode 5B in a bent state, the first lead terminal 220 can be pressed against the first electrode 5B by its elastic force without using the conductive bonding material J.
  • the second lead terminal 230 When the second lead terminal 230 is bent upward and is electrically connected to the second electrode 6B, the second lead terminal 230 can be pressed against the second electrode 6B by its elastic force without using the conductive bonding material J. Therefore, in the assembly work of the battery module 100B including the battery package 1B and the battery 200, the step of applying the conductive resin J can be omitted. Therefore, according to the example of another aspect of the third embodiment, it is possible to further improve the assemblability of the battery module 100B.
  • the battery 200 may be bonded to the bottom surface of the recess 21 of the insulating substrate 2 with a bonding material such as a resin adhesive.
  • a bonding material such as a resin adhesive.
  • the elastic force of the first lead terminal 220 and the second lead terminal 230 may press the battery 200 against the inner wall surface of the recess 21 of the insulating substrate 2 to fix it.
  • the bonding material for bonding the battery 200 to the bottom surface of the concave portion 21 of the insulating substrate 2 can be omitted.
  • the first lead terminal 220 may be joined to the first electrode 5B by the conductive joining material J.
  • the second lead terminal 230 may be joined to the second electrode 6B with a conductive joint material J.
  • FIG. 10 is a schematic cross-sectional view along line XX in the plan view of FIG.
  • the plan view of FIG. 10 is a schematic plan view showing a battery module 100C according to the fourth embodiment.
  • the battery package 1C according to the fourth embodiment includes the battery package 1C according to the fourth embodiment and a cylindrical battery 200 mounted on the battery package 1C.
  • a battery package 1C according to the fourth embodiment has the same configuration as the battery package 1 according to the first embodiment except for a part of the configuration.
  • the configuration different from that of the battery package 1 according to the first embodiment will be described.
  • members having the same functions as the members explained in the first embodiment are denoted by the same reference numerals.
  • the battery package 1C has a first electrode 5C located on the inner side surface of the recess 21 of the insulating substrate 2, and the first electrode 5C corresponds to the first electrode 5 of the battery package 1.
  • the first electrode 5C may extend along the horizontal direction.
  • the first electrode 5C is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the battery package 1C has a second electrode 6C positioned on the inner side surface of the recess 21 of the insulating substrate 2 and corresponds to the second electrode 6 of the battery package 1.
  • the second electrode 6C may extend along the lateral direction.
  • the first electrode 5 ⁇ /b>C and the second electrode 6 ⁇ /b>C may be arranged in the depth direction of the recess 21 .
  • the first electrode 5C and the second electrode 6C may extend in opposite directions.
  • the second electrode 6C is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the first electrode 5C and the second electrode 6C are formed by printing, like the first electrode 5, at predetermined positions on the ceramic green sheet for the insulating layer by a method such as screen printing.
  • a metal plating layer such as a nickel plating layer/gold plating layer may be deposited on the surfaces of the first electrode 5C and the second electrode 6C exposed to the outside by a plating method such as an electrolytic plating method or an electroless plating method.
  • the insulating substrate 2 may have a protrusion 22C located between the first electrode 5C and the second electrode 6C on the inner side surface of the recess 21.
  • the recess 21 of the insulating substrate 2 may have a projection 22 located between the first electrode 5C and the second electrode 6C on its inner surface.
  • the protrusion 22C of the insulating substrate 2 may extend along the lateral direction.
  • the recesses 21 having the protrusions 22C are formed by subjecting a ceramic green sheet for insulating layers to an appropriate punching process.
  • the first lead terminal 220 may be electrically connected to the first electrode 5C while being bent in the lateral direction.
  • the second lead terminal 230 may be electrically connected to the second electrode 6C while being bent in the horizontal direction.
  • the first lead terminal 220 and the second lead terminal 230 may be bent in the same direction, or may be bent in opposite directions as indicated by the two-dot chain lines in the example shown in FIG.
  • the first lead terminal 220 may be bonded to the first electrode 5C with a conductive bonding material J.
  • the second lead terminal 230 may be bonded to the second electrode 6C with a conductive bonding material J.
  • the technology applied to the battery package 1 according to another aspect of the first embodiment shown in FIG. 5 may be applied to the battery package 1C.
  • the first electrode 5C and the second electrode 6C are positioned on the inner side surface of the recess 21 of the insulating substrate 2. Therefore, when the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent, the first lead terminal 220 and the second lead terminal 230 are electrically connected to the first electrode 5C and the second electrode 6C, respectively. As a result, the cylindrical battery 200 can be mounted in the battery package 1C without adjusting the height of the joint between the first lead terminal 220 and the first electrode 5C and the joint between the second lead terminal 230 and the second electrode 6C. Therefore, according to the example of the fourth embodiment, it is possible to improve the assemblability of the battery module 100C including the battery package 1C and the battery 200.
  • the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent. Therefore, the size of the concave portion 21 of the insulating substrate 2 can be reduced in plan view by the amount of bending of the first lead terminal 220 and the second lead terminal 230 .
  • the conductive bonding material J may drip from the first electrode 5C to the second electrode 6C, which may cause a short circuit between the first electrode 5C and the second electrode 6C.
  • the protrusion 22C is positioned between the first electrode 5C and the second electrode 6C on the inner surface of the recess 21 of the insulating substrate 2, even if the first electrode 5C and the second electrode 6C are aligned in the depth direction of the recess 21, the possibility of short-circuiting between the first electrode 5C and the second electrode 6C due to dripping of the conductive bonding material J can be reduced.
  • FIG. 11 is a schematic cross-sectional view taken along line XI--XI in the plan view of FIG.
  • the plan view of FIG. 11 is a schematic plan view showing a battery module 100D according to the fifth embodiment.
  • the battery package 1D according to the fifth embodiment includes the battery package 1D according to the fifth embodiment and a cylindrical battery 200 mounted on the battery package 1D.
  • a battery package 1D according to the fifth embodiment has the same configuration as the battery package 1 according to the first embodiment except for a part of the configuration.
  • the configuration different from that of the battery package 1 according to the first embodiment will be described.
  • members having the same functions as the members explained in the first embodiment are denoted by the same reference numerals.
  • the battery package 1D has a first electrode 5D positioned on the inner side surface of the recess 21 of the insulating substrate 2, and the first electrode 5D corresponds to the first electrode 5 of the battery package 1.
  • the first electrode 5 ⁇ /b>D may be a metal film positioned along the inner surface of the wide groove 27 ⁇ /b>D that opens on the inner surface of the recess 21 of the insulating substrate 2 .
  • the grooves 27 ⁇ /b>D of the insulating substrate 2 may extend laterally and along the depth direction of the recess 21 .
  • the groove 27 ⁇ /b>D of the insulating substrate 2 may extend to the opening side of the recess 21 .
  • the first electrode 5D may extend along the lateral direction.
  • the first electrode 5D and the second electrode 6D may extend in opposite directions.
  • the first electrode 5D is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 27D of the insulating substrate 2 is not limited to the wide shape.
  • the battery package 1D has a second electrode 6D located on the inner side surface of the recess 21 of the insulating substrate 2, and the second electrode 6D corresponds to the second electrode 6 of the battery package 1.
  • the second electrode 6 ⁇ /b>D may be a metal film along the inner surface of a wide groove 28 ⁇ /b>D that opens on the inner surface of the recess 21 of the insulating substrate 2 .
  • the groove 28 ⁇ /b>D of the insulating substrate 2 may extend laterally and along the depth direction of the recess 21 .
  • the second electrode 6D may extend along the lateral direction.
  • the groove 28 ⁇ /b>D of the insulating substrate 2 may extend to the opening side of the recess 21 .
  • the first electrode 5D and the second electrode 6D may be arranged horizontally.
  • the second electrode 6D is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 28D of the insulating substrate 2 is not limited to the wide shape.
  • the grooves 27D and 28D of the insulating substrate 2 are formed by appropriately punching ceramic green sheets for insulating layers.
  • the first electrode 5D and the second electrode 6D are formed on the inner surfaces of the grooves 27D and 28D of the insulating substrate 2 by hole printing, for example.
  • the method of forming the first electrode 5D and the second electrode 6D is not limited to hole printing, and may be, for example, coating, vapor deposition, or other techniques.
  • a metal plating layer such as a nickel plating layer/gold plating layer may be deposited on the surfaces of the first electrode 5D and the second electrode 6D exposed to the outside by a plating method such as an electrolytic plating method or an electroless plating method.
  • the insulating substrate 2 may have a protrusion 22D located between the first electrode 5D and the second electrode 6D on the inner side surface of the recess 21.
  • the recess 21 of the insulating substrate 2 may have a protrusion 22D located between the first electrode 5D and the second electrode 6D on its inner surface.
  • the protrusion 22 ⁇ /b>D of the insulating substrate 2 may extend along the depth direction of the recess 21 .
  • the recesses 21 having the projections 22D are formed by subjecting a ceramic green sheet for insulating layers to an appropriate punching process.
  • the protrusion 22D may be omitted from the configuration of the insulating substrate 2.
  • the stepped portion 23 of the insulating substrate 2 may be located closer to the opening of the recess 21 than the first electrode 5D and the second electrode 6D at the edge of the recess 21.
  • the first lead terminals 220 may be bent and inserted into the grooves 27D of the insulating substrate 2 to be electrically connected to the first electrodes 5C.
  • the second lead terminal 230 may be electrically connected to the second electrode 6 ⁇ /b>D while being bent and inserted inside the groove 28 ⁇ /b>D of the insulating substrate 2 .
  • the first lead terminal 220 and the second lead terminal 230 may be bent in opposite directions.
  • the first lead terminal 220 may be bonded to the first electrode 5D with a conductive bonding material J.
  • the second lead terminal 230 may be bonded to the second electrode 6D with a conductive bonding material J.
  • the first electrode 5D and the second electrode 6D are positioned on the inner surface of the recess 21 of the insulating substrate 2. Therefore, when the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent, the first lead terminal 220 and the second lead terminal 230 are electrically connected to the first electrode 5D and the second electrode 6D, respectively. As a result, the cylindrical battery 200 can be mounted in the battery package 1D without adjusting the height of the joint between the first lead terminal 220 and the first electrode 5D and the joint between the second lead terminal 230 and the second electrode 6D. Therefore, according to the example of the fifth embodiment, it is possible to improve the assemblability of the battery module 100D including the battery package 1D and the battery 200.
  • the first lead terminal 220 and the second lead terminal 230 when the first lead terminal 220 and the second lead terminal 230 are inserted into the grooves 27D and 28D of the insulating substrate 2 respectively, the first lead terminal 220 and the second lead terminal 230 can be easily positioned with respect to the insulating substrate 2. Further, when the grooves 27D and 28D of the insulating substrate 2 extend toward the opening side of the recess 21, it becomes easy to insert the first lead terminal 220 and the second lead terminal 230 into the grooves 27D and 28D of the insulating substrate 2, respectively. Therefore, according to the example of the fifth embodiment, it is possible to further improve the assemblability of the battery module 100D.
  • the cylindrical battery 200 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent. Therefore, the size of the concave portion 21 of the insulating substrate 2 can be reduced in plan view by the amount of bending of the first lead terminal 220 and the second lead terminal 230 . Furthermore, when the first lead terminal 220 and the second lead terminal 230 are inserted into the grooves 27D and 28D of the insulating substrate 2, respectively, the recess 21 of the insulating substrate 2 can be made smaller in plan view by the amount of insertion of the first lead terminal 220 and the second lead terminal 230. Thus, according to the example of the fifth embodiment, it is possible to reduce the size of the battery package 1B, in other words, to reduce the size of the battery module 100B.
  • first lead terminal 220 and the second lead terminal 230 are inserted into the grooves 27D and 28D of the insulating substrate 2, respectively, it becomes difficult for the first lead terminal 220 and the second lead terminal 230 to come into contact with each other. Thereby, according to the example of the fifth embodiment, it is possible to reduce the possibility of a short circuit between the first electrode 5D and the second electrode 6D.
  • the joint strength of the first lead terminal 220 to the first electrode 5D can be increased.
  • the second lead terminal 230 is inserted into the groove 28D of the insulating substrate 2 and joined to the second electrode 6D by the conductive joint material J, the joint strength of the second lead terminal 230 to the second electrode 6D can be increased. Therefore, according to the example of the fifth embodiment, it is possible to improve the connection reliability of the battery module 100D.
  • the bonding area between the first electrode 5D and the insulating substrate 2 and the bonding area between the second electrode 6D and the insulating substrate 2 can be increased.
  • the bonding strength of the first electrode 5D to the insulating substrate 2 and the bonding strength of the second electrode 6D to the insulating substrate 2 can be increased. Therefore, according to the example of the fifth embodiment, it is possible to improve the long-term reliability of the battery module 100D.
  • the operational effects related to the airtight sealing, the operational effects related to the protrusion 22, and the operational effects related to the step portion 23 are achieved.
  • FIG. 12 is a schematic cross-sectional view along line XII-XII in the plan view of FIG.
  • the plan view of FIG. 12 is a schematic plan view showing a battery module 100E according to the sixth embodiment.
  • the battery module 100E according to the sixth embodiment includes the battery package 1E according to the sixth embodiment and a laminate-type battery 300 mounted on the battery package 1E.
  • the battery package 1E according to the sixth embodiment has the same configuration as the battery package 1 according to the first embodiment, except that the recess 21 of the insulating substrate 2 has a size corresponding to the laminated battery 300.
  • the planar view size of the recess 21 of the insulating substrate 2 is slightly larger than the planar view size of the battery body 310 of the battery 300 .
  • the depth of recess 21 may be approximately the same as the thickness of battery body 310 of battery 300 .
  • the planar view shape of the recessed portion 21 of the insulating substrate 2 is not limited to a rectangular shape, and can be changed according to the shape of the battery body 210 of the battery 300 .
  • the laminate type battery 300 may be bonded to the bottom surface of the recess 21 of the insulating substrate 2 with a bonding material such as a resin adhesive.
  • a laminate-type battery 300 has a battery body 310 , and a plate-like first lead terminal 320 and a plate-like second lead terminal 330 projecting from one side of the battery body 310 .
  • the plan view shape of the battery main body 310 may be a rectangular shape.
  • the first lead terminal 320 may be electrically connected to the first electrode 5 while being bent downward.
  • the second lead terminal 330 may be electrically connected to the second electrode 6 while being bent downward.
  • the first lead terminal 320 and the second lead terminal 330 may be bent to press against the first electrode 5 and the second electrode 6 by elastic force, respectively.
  • the first lead terminal 320 may be bonded to the first electrode 5 with a conductive bonding material J such as solder or conductive resin.
  • the second lead terminal 330 may be bonded to the second electrode 6 with a conductive bonding material J.
  • the first electrode 5 and the second electrode 6 are positioned on the inner side surface of the recess 21 of the insulating substrate 2 . Therefore, when the laminated battery 300 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 220 and the second lead terminal 230 bent, the first lead terminal 320 and the second lead terminal 330 are electrically connected to the first electrode 5 and the second electrode 6, respectively. As a result, the laminate type battery 300 can be mounted on the battery package 1 without adjusting the height of the junction (connection) between the first lead terminal 320 and the first electrode 5 and the junction between the second lead terminal 330 and the second electrode 6. Therefore, according to the example of the sixth embodiment, it is possible to improve the assemblability of the battery module 100E including the battery package 1 and the battery 300 .
  • the laminated battery 300 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 320 and the second lead terminal 330 bent in the recess 21 . Therefore, the size of the concave portion 21 of the insulating substrate 2 can be reduced in plan view by the amount of bending of the first lead terminal 320 and the second lead terminal 330 .
  • FIG. 13 and 14 are schematic plan views of a battery module 100E according to another aspect of the sixth embodiment.
  • the insulating substrate 2 may have a second recess 26 that opens to the bottom surface of the recess 21 .
  • the second recessed portion 26 of the insulating substrate 2 is a recessed portion that can be engaged with the lower portion of the battery body 310 of the laminate type battery 300 .
  • the planar view shape of the second concave portion 26 of the insulating substrate 2 may be rectangular, for example.
  • the inner side surface of the second concave portion 26 of the insulating substrate 2 may be parallel to the thickness direction of the insulating substrate 2 .
  • the size of the second concave portion 26 of the insulating substrate 2 in plan view corresponds to the size of the battery main body 310 of the battery 300 .
  • the planar view shape of the second concave portion 26 of the insulating substrate 2 is not limited to a rectangular shape, and can be changed according to the shape of the battery body 310 of the battery 300 .
  • the laminate-type battery 300 in the battery module 100E is accommodated in the recess 21 of the insulating substrate 2 with the lower portion of the battery body 310 engaged with the second recess 26 of the insulating substrate 2 .
  • the laminate type battery 300 may be bonded to the bottom surface of the second concave portion 26 of the insulating substrate 2 with a bonding material such as a resin adhesive.
  • the laminated battery 300 can be easily positioned with respect to the insulating substrate 2 by engaging the lower portion of the battery body 310 with the second concave portion 26 of the insulating substrate 2.
  • the first electrode 5 and the second electrode 6 may be positioned on the inner surfaces of the concave portion 21 of the insulating substrate 2 facing each other. Also, the first lead terminal 320 and the second lead terminal 330 may be bent in opposite directions to each other, or may be bent in the same direction.
  • FIG. 15 is a schematic cross-sectional view along line XV-XV in the plan view of FIG.
  • the plan view of FIG. 15 is a schematic plan view showing a battery module 100F according to the seventh embodiment.
  • the battery package 1F according to the seventh embodiment includes the battery package 1F according to the seventh embodiment and a laminate-type battery 300 mounted on the battery package 1F.
  • the battery package 1F according to the seventh embodiment has the same configuration as the battery package 1E except for a part of the configuration.
  • configurations different from the battery package 1E will be described.
  • members having the same functions as the members explained in the sixth embodiment are denoted by the same reference numerals.
  • the battery package 1F has a first electrode 5F located on the inner side surface of the recess 21 of the insulating substrate 2, and the first electrode 5F corresponds to the first electrode 5 of the battery package 1E.
  • the first electrode 5 ⁇ /b>F may be a metal film positioned along the inner surface of the wide groove 27 ⁇ /b>F that opens on the inner surface of the recess 21 of the insulating substrate 2 .
  • the grooves 27 ⁇ /b>F of the insulating substrate 2 may extend along the depth direction of the recesses 21 .
  • the groove 27 ⁇ /b>F of the insulating substrate 2 may extend to the opening side of the recess 21 .
  • the first electrode 5 ⁇ /b>F may extend along the depth direction of the recess 21 .
  • the first electrode 5 ⁇ /b>F may extend to the upper end of the groove 27 ⁇ /b>F of the insulating substrate 2 .
  • the first electrode 5 ⁇ /b>F may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5F is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 27F of the insulating substrate 2 is not limited to the wide shape.
  • the battery package 1F has a second electrode 6F positioned on the inner side surface of the recess 21 of the insulating substrate 2, and the second electrode 6F corresponds to the second electrode 6 of the battery package 1E.
  • the second electrode 6 ⁇ /b>F may be a metal film along the inner surface of the wide groove 28 ⁇ /b>F that opens on the inner surface of the recess 21 of the insulating substrate 2 .
  • the grooves 28 ⁇ /b>F of the insulating substrate 2 may extend along the depth direction of the recess 21 .
  • the grooves 28 ⁇ /b>F of the insulating substrate 2 may extend along the depth direction of the recess 21 .
  • the second electrode 6 ⁇ /b>F may extend along the depth direction of the recess 21 .
  • the second electrode 6F may extend up to the upper end of the groove 28F of the insulating substrate 2 .
  • the second electrode 6 ⁇ /b>F may extend up to the height of the bottom surface of the recess 21 of the insulating substrate 2 .
  • the first electrode 5B and the second electrode 6B may be arranged horizontally.
  • the second electrode 6F is made of the same metal powder metallization as the first external electrode 3 and the like.
  • the shape of the groove 28F of the insulating substrate 2 is not limited to the wide shape.
  • the grooves 27F and 28F of the insulating substrate 2 are formed by appropriately punching the ceramic green sheet for the insulating layer.
  • the first electrode 5F and the second electrode 6F are formed on the inner surfaces of the grooves 27F and 28F of the insulating substrate 2 by hole printing, for example.
  • the method of forming the first electrode 5F and the second electrode 6F is not limited to hole printing, and may be, for example, coating, vapor deposition, or other methods.
  • a metal plating layer such as a nickel plating layer/gold plating layer may be deposited on the surfaces of the first electrode 5F and the second electrode 6F exposed to the outside by a plating method such as an electrolytic plating method or an electroless plating method.
  • the insulating substrate 2 may have depressions 24F and 25F positioned on the bottom surface of the recess 21 at locations corresponding to the first electrode 5F and the second electrode 6F, respectively.
  • the recess 24F of the insulating substrate 2 may block the conductive bonding material J for bonding the first lead terminal 320 to the first electrode 5F (hereinafter referred to as the conductive bonding material J for the first lead terminal 320).
  • the recess 25f of the insulating substrate 2 may block the conductive bonding material J for bonding the second lead terminal 330 to the second electrode 6F (hereinafter referred to as the conductive bonding material J for the second lead terminal 330).
  • the recesses 24F and 25F of the insulating substrate 2 are formed by appropriately punching ceramic green sheets for insulating layers. Also, the first electrode 5 ⁇ /b>F may extend to the inside of the recess 24 ⁇ /b>F of the insulating substrate 2 . The second electrode 6 ⁇ /b>F may extend inside the recess 25 ⁇ /b>F of the insulating substrate 2 .
  • the first electrode 5F may extend to the inner surface of the recess 24F that is continuous with the inner surface of the recess 21 of the insulating substrate 2.
  • the first electrode 5 ⁇ /b>F may extend to the bottom surface of the recess 24 ⁇ /b>F of the insulating substrate 2 .
  • the second electrode 6 ⁇ /b>F may extend to the inner surface of the recess 25 ⁇ /b>F that is continuous with the inner surface of the recess 21 of the insulating substrate 2 .
  • the second electrode 6 ⁇ /b>F may extend to the bottom surface of the recess 25 of the insulating substrate 2 .
  • the first lead terminal 320 may be bent downward and inserted into the groove 27F of the insulating substrate 2 to be electrically connected to the first electrode 5B.
  • the second lead terminal 230 may be bent downward and inserted into the groove 28 of the insulating substrate 2 to be electrically connected to the second electrode 6B.
  • the first lead terminal 320 may be bonded to the first electrode 5B with a conductive bonding material J.
  • FIG. The second lead terminal 330 may be bonded to the second electrode 6B with a conductive bonding material J.
  • the technology applied to the battery module 100E according to another aspect of the sixth embodiment of the example shown in FIG. 3 may be applied to the battery module 100F.
  • the first electrode 5F and the second electrode 6F are positioned on the inner side surface of the recess 21 of the insulating substrate 2. Therefore, when the laminated battery 300 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 320 and the second lead terminal 330 bent, the first lead terminal 320 and the second lead terminal 330 are electrically connected to the first electrode 5F and the second electrode 6F, respectively. As a result, the laminated battery 300 can be mounted on the battery package 1F without adjusting the height of the joint between the first lead terminal 320 and the first electrode 5F and the joint between the second lead terminal 330 and the second electrode 6F. Therefore, according to the example of the seventh embodiment, it is possible to improve the assemblability of the battery module 100F including the battery package 1F and the battery 200.
  • the first lead terminals 320 and the second lead terminals 330 when the first lead terminals 320 and the second lead terminals 330 are inserted into the grooves 27F and 28F of the insulating substrate 2 respectively, the first lead terminals 320 and the second lead terminals 330 can be easily positioned with respect to the insulating substrate 2. Further, when the grooves 27F and 28F of the insulating substrate 2 extend toward the opening of the recess 21, the first lead terminal 320 and the second lead terminal 330 can be easily inserted into the grooves 27F and 28F of the insulating substrate 2, respectively. Thereby, according to the example of the seventh embodiment, it is possible to further improve the assemblability of the battery module 100F.
  • the laminated battery 300 is accommodated in the recess 21 of the insulating substrate 2 with the first lead terminal 320 and the second lead terminal 330 bent. Therefore, the size of the concave portion 21 of the insulating substrate 2 can be reduced in plan view by the amount of bending of the first lead terminal 320 and the second lead terminal 330 . Furthermore, when the first lead terminal 320 and the second lead terminal 330 are inserted into the grooves 27F and 28F of the insulating substrate 2, respectively, the recess 21 of the insulating substrate 2 can be made smaller in plan view by the amount of insertion of the first lead terminal 320 and the second lead terminal 330. Thus, according to the example of the seventh embodiment, it is possible to reduce the size of the battery package 1F, in other words, to reduce the size of the battery module 100F.
  • the first lead terminal 320 and the second lead terminal 330 are inserted into the grooves 27F and 28F of the insulating substrate 2, respectively, the first lead terminal 320 and the second lead terminal 330 are difficult to contact. Thereby, according to the example of the seventh embodiment, it is possible to reduce the possibility of a short circuit between the first electrode 5F and the second electrode 6F.
  • the joint strength of the first lead terminal 320 to the first electrode 5F can be increased.
  • the second lead terminal 330 is inserted into the groove 28F of the insulating substrate 2 and joined to the second electrode 6F by the conductive joint material J, the joint strength of the second lead terminal 330 to the second electrode 6F can be increased. Therefore, according to the example of the seventh embodiment, it is possible to improve the connection reliability of the battery module 100F.
  • the bonding area between the first lead terminal 320 and the first electrode 5F (bonding area between the conductive bonding material J and the first electrode 5F) and bonding area between the second lead terminal 330 and the second electrode 6F (bonding area between the conductive bonding material J and the second electrode 6F) can be increased.
  • the bonding strength of the first lead terminal 320 to the first electrode 5F and the bonding strength of the second lead terminal 330 to the second electrode 6F can be further increased. Therefore, according to the example of the seventh embodiment, it is possible to further improve the connection reliability of the battery module 100F.
  • the first lead terminal 320 joins the first electrode 5F and part of the wiring layer of the first connection wiring 7.
  • the second lead terminal 330 joins the second electrode 6F and part of the wiring layer of the second connection wiring 8.
  • the bonding area between the first electrode 5F and the insulating substrate 2 and the bonding area between the second electrode 6F and the insulating substrate 2 can be increased.
  • the bonding strength of the first electrode 5F to the insulating substrate 2 and the bonding strength of the second electrode 6F to the insulating substrate 2 can be increased. Therefore, according to the example of the seventh embodiment, it is possible to improve the long-term reliability of the battery module 100F.
  • the insulating substrate 2 has the recesses 24F and 25F, it becomes difficult for the conductive bonding material J for the first lead terminal 320 and the conductive bonding material J for the second lead terminal 330 to come into contact with each other on the bottom surface of the recessed portion 21 of the insulating substrate 2.
  • the number of batteries 200 (300) accommodated in the recess 21 of the insulating substrate 2 is not limited to one, and may be plural.
  • a plurality of batteries 200 (300) may be accommodated side by side in one concave portion 21 of the insulating substrate 2 along the horizontal direction.
  • a plurality of sets of first electrodes 5 and second electrodes 6 are positioned on the inner side surface of one recess 21 .
  • a plurality of recesses 21 may be positioned along the lateral direction on the first surface 2a of the insulating substrate 2, and the batteries 200 (300) may be accommodated in the plurality of recesses 21, respectively.
  • the first electrode 5 and the second electrode 6 are positioned on the inner side surface of each recess 21 of the insulating substrate 2 .
  • a battery control semiconductor element for controlling the battery 200 (300) may be accommodated in the recess 21 of the insulating substrate 2.
  • Semiconductor devices for battery control include a DC/DC converter that supplies a constant power supply voltage, a reset IC that monitors the power supply, and a switch IC that turns the power on/off.
  • electronic components such as coils and capacitors may be housed in the recesses 21 of the insulating substrate 2 .
  • Such semiconductor elements and electronic components may be accommodated in a recess other than the recess 21 that houses the battery 200 (300), for example, a recess that opens to the second surface 2b of the insulating substrate 2.
  • the battery modules 100 may include desiccants that absorb moisture.
  • a desiccant may be located on the lower surface of the lid 10 .
  • the desiccant may be located between the inner surface of the recess 21 of the insulating substrate 2 and the outer surface of the battery body 210 (310).
  • a desiccant for example, silica gel or calcium chloride may be used.
  • the battery module 100 may include elastic bodies 11 interposed between the lower surface of the lid 10 and the upper surface of the battery body 210 .
  • the elastic body 11 may fix the battery 200 to the insulating substrate 2 by its elastic force.
  • Battery modules 100A to 100F may also include elastic bodies 11 interposed between the lower surface of lid 10 and the upper surface of battery main body 210 (310).
  • the elastic body 11 may fix the battery 200 (300) to the insulating substrate 2 by its elastic force.
  • a spring member such as a coil spring or a plate spring may be used as the elastic body 11, or rubber or the like may be used.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Mounting, Suspending (AREA)
PCT/JP2023/000782 2022-01-21 2023-01-13 電池用パッケージおよび電池モジュール Ceased WO2023140190A1 (ja)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004152586A (ja) * 2002-10-30 2004-05-27 Kyocera Corp 表面実装型電池
JP2016092344A (ja) * 2014-11-11 2016-05-23 セイコーインスツル株式会社 電気化学セル

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Publication number Priority date Publication date Assignee Title
CN112567562B (zh) 2018-08-10 2023-12-05 株式会社村田制作所 固态电池

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004152586A (ja) * 2002-10-30 2004-05-27 Kyocera Corp 表面実装型電池
JP2016092344A (ja) * 2014-11-11 2016-05-23 セイコーインスツル株式会社 電気化学セル

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