Battery package and battery module

Abstract

The present invention achieves easy confirmation of a connection state. The receiving part is located on the frame part or the insulating substrate, the conductive metal plate is located on the opening side of the concave part, the conductive metal plate is provided with a connecting part and a locking part, the connecting part is electrically connected with the second electrode from above, and the locking part is locked to the receiving part. The cover body is electrically insulated from the conductive metal plate.

Description

Technical Field

[0001] The present invention relates to a battery package and a battery module. Background Art

[0002] As a power source or auxiliary power source for small electronic devices, there is a battery module that can be surface mounted on a circuit board as shown in Patent Document 1. This prior art battery module (referred to as an electrochemical cell in Patent Document 1) has: an insulating substrate (referred to as a base member in Patent Document 1) having a recess for accommodating a battery (referred to as an electrochemical element in Patent Document 1); and a frame (referred to as a sealing ring in Patent Document 1) located on the upper surface of the insulating substrate. The insulating substrate has an annular protrusion (referred to as a stopper in Patent Document 1) protruding toward the inside of the recess on the opening side of the recess.

[0003] The first electrode (referred to as the first current collector in Patent Document 1) is located at the bottom of the recessed portion of the insulating substrate. The second electrode (referred to as the metal layer in Patent Document 1) is located from the lower surface of the protruding portion of the insulating substrate to the upper surface of the insulating substrate. The first external electrode (referred to as one external connection terminal in Patent Document 1) and the second external electrode (referred to as another external connection terminal in Patent Document 1) are located on the lower surface of the insulating substrate, the first external electrode is electrically connected to the first electrode, and the second external electrode is electrically connected to the second electrode.

[0004] The battery package has a conductive metal plate (referred to as a diaphragm spring in Patent Document 1) located on the opening side of the recessed portion of the insulating substrate, and the conductive metal plate presses the battery toward the bottom surface side of the recessed portion of the insulating substrate by elastic force. Multiple locations in the peripheral portion of the conductive metal plate are electrically connected to the second electrode in a state where they are locked to the protruding portion of the insulating substrate from below.

[0005] The battery package has a lid body (referred to as a sealing plate in Patent Document 1) that closes the frame. A current collector is located on the lower surface of the lid body, and the lid body is electrically connected to the second electrode via the current collector and the frame.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Publication “Tokkai 2012-69508”. Summary of the invention

[0009] The battery package of the present invention comprises: an insulating substrate having a first surface, a second surface on the opposite side of the first surface, and a recessed portion opened on the first surface and used to accommodate a battery; a frame portion, which surrounds the recessed portion on the first surface; a first external electrode, which is located on the second surface; a second external electrode, which is located on the second surface; a first electrode, which is located on the bottom surface of the recessed portion and is electrically connected to the first external electrode; a second electrode, which is located between the recessed portion and the frame portion on the surface of the insulating substrate in a plan view of the first surface and is electrically connected to the second external electrode; a receiving portion, which is located on the frame portion or the insulating substrate; a conductive metal plate, which is located on the opening side of the recessed portion, has a connecting portion and a locking portion, and uses elastic force to press the battery toward the bottom surface side of the recessed portion, the connecting portion is electrically connected to the second electrode from above, and the locking portion is locked to the receiving portion; and a cover body, which is electrically insulated from the conductive metal plate and closes the frame.

[0010] In addition, the battery module of the present invention comprises: the battery package of the present invention; and a battery housed in the recess of the battery package, wherein the lower electrode is electrically connected to the first electrode, and the upper electrode is electrically connected to the conductive metal plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic plan view showing the battery package and the battery module according to the first embodiment.

[0012] Figure 2 yes Figure 1 A schematic bottom view of a battery package is shown.

[0013] Figure 3 is along Figure 1 Schematic cross-sectional view along line III-III in FIG.

[0014] Figure 4 is along Figure 1 Schematic cross-sectional view along line IV-IV in FIG.

[0015] Figure 5 It is a schematic plan view showing a battery package and a battery module according to another mode of the first embodiment.

[0016] Figure 6 is along Figure 5 Schematic cross-sectional view along line VI-VI in FIG.

[0017] Figure 7 is along Figure 5 Schematic cross-sectional view along line VII-VII in FIG.

[0018] Figure 8 This is a schematic plan view showing another form of a battery package according to the first embodiment.

[0019] Fig. 9 This is a schematic cross-sectional view showing another form of a battery package according to the first embodiment.

[0020] Fig.10 This is a schematic cross-sectional view showing another form of a battery package according to the first embodiment.

[0021] Fig.11 It is a schematic plan view showing a battery package and a battery module according to a second embodiment.

[0022] Fig.12 yes Fig.11 A schematic perspective view of a battery package is shown.

[0023] Fig.13 yes Fig.11 A schematic perspective view of a battery package is shown.

[0024] Fig.14 is along Fig.11 Schematic cross-sectional view along line XIV-XIV in FIG.

[0025] Fig.15 is along Fig.11 Schematic cross-sectional view of line XV-XV in FIG.

[0026] Fig.16 This is a schematic cross-sectional view showing another form of a battery package according to the second embodiment.

[0027] Fig.17 This is a schematic cross-sectional view showing another form of a battery package according to the second embodiment.

[0028] Fig.18 It is a schematic plan view showing a battery package according to Modification 1 of the second embodiment.

[0029] Fig.19 It is a schematic plan view showing a state where the locking piece is inserted into the insertion port.

[0030] Fig. 20 is along Fig.18 A schematic cross-sectional view of the line XX-XX in FIG.

[0031] Fig.21 It is a schematic plan view showing a battery package and a battery module according to Modification 2 of the second embodiment.

[0032] Fig. 22is along Fig.21 Schematic cross-sectional view of line XXII-XXII in FIG.

[0033] Fig.23 It is a schematic plan view showing a battery package and a battery module according to a third embodiment.

[0034] Fig.24 is along Fig.23 Schematic cross-sectional view of line XXIV-XXIV in FIG.

[0035] Fig.25 is along Fig.23 Schematic cross-sectional view of line XXV-XXV in FIG.

[0036] Fig.26 This is a schematic cross-sectional view showing another form of a battery package according to the third embodiment.

[0037] Fig. 27 It is a schematic plan view showing a battery package and a battery module according to a fourth embodiment.

[0038] Fig.28 is along Fig. 27 Schematic cross-sectional view of line XXVIII-XXVIII in FIG.

[0039] Fig.29 is along Fig. 27 Schematic cross-sectional view of line XXIX-XXIX in FIG.

[0040] Fig.30 It is a schematic plan view showing a battery package and a battery module according to a fifth embodiment.

[0041] Fig.31 is along Fig.30 Schematic cross-sectional view of line XXXI-XXXI in FIG.

[0042] Fig.32 is along Fig.30 Schematic cross-sectional view of line XXXII-XXXII in FIG.

[0043] Fig.33 It is a schematic plan view showing a battery package according to a modified example of the fifth embodiment.

[0044] Fig.34 It is a schematic plan view showing a state before the locking piece is inserted into the stopper.

[0045] Fig.35 is along Fig.33 A schematic cross-sectional view of line XXXV-XXXV in FIG. DETAILED DESCRIPTION

[0046] For example, in the battery module described in the prior art document 1, a plurality of locations in the peripheral portion of the conductive metal plate are electrically connected to the second electrode while being locked to the protrusion of the insulating substrate from below. Therefore, in the manufacturing stage of the battery module, the connection state between the conductive metal plate and the second electrode cannot be confirmed by visual inspection. Therefore, it is impossible to visually judge whether the battery module is good or defective, and there is a concern that defective products may flow out unexpectedly.

[0047] In addition, since the cover is electrically connected to the second electrode, the upper surface electrode of the battery housed in the recess of the insulating substrate is electrically connected to the cover, so there is a concern that power may leak from the cover or the cover may contact other components and cause a short circuit.

[0048] One aspect of the present invention enables easy confirmation of the connection state during appearance inspection of a battery module.

[0049] In the battery module of the present invention, it is possible to easily distinguish good and bad products by visual inspection, without worrying about the sudden outflow of bad products. In addition, the possibility of short circuit between the cover and other components can be reduced, and power can be efficiently extracted from the battery.

[0050] According to the present invention, the connection state can be easily confirmed during the appearance inspection of the battery module.

[0051] Hereinafter, the battery package and the battery module of the embodiment will be described in detail using the accompanying drawings. However, for the sake of convenience of explanation, the figures referred to below only briefly represent the components required on the basis of explaining the embodiment. Therefore, the battery package and the battery module of the embodiment can have arbitrary components not shown in the figures referred to. In addition, the dimensions of the components in the figures may not faithfully represent the dimensions of the actual components and the dimensional ratios of the components. The rectangular shape is not limited to a strict rectangular shape, but includes, for example, a shape that can be visually recognized as a rectangle as a whole even if the corners are curved.

[0052] [First embodiment]

[0053] Reference Figures 1 to 10 The battery package 1 and the battery module 100 according to the first embodiment will be described. Figure 1 It is a schematic plan view showing the battery package 1 and the battery module 100 according to the first embodiment. Figure 2 yes Figure 1 The schematic bottom view of the battery package 1 is shown. Figure 3 is along Figure 1 Schematic cross-sectional view along line III-III in FIG. Figure 4 is along Figure 1Schematic cross-sectional view along line IV-IV in FIG.

[0054] Figure 5 It is a schematic plan view showing a battery package 1 and a battery module 100 according to another mode of the first embodiment. Figure 6 is along Figure 5 Schematic cross-sectional view along line VI-VI in FIG. Figure 7 is along Figure 5 Schematic cross-sectional view along line VII-VII in FIG. Figure 8 It is a schematic plan view showing another form of the battery package 1 according to the first embodiment. Fig. 9 and Fig.10 This is a schematic cross-sectional view showing another form of a battery package according to the first embodiment.

[0055] like Figures 1 to 7 As shown in the example, the battery module 100 of the first embodiment has a battery package 1 of the first embodiment and a battery 200 mounted on the battery package 1. The battery package 1 may have an insulating substrate 2, and the top view shape of the insulating substrate 2 may be, for example, rectangular. The insulating substrate 2 is composed of ceramics such as an alumina sintered body (alumina ceramic), an aluminum nitride sintered body, a mullite sintered body, or a glass ceramic sintered body. The insulating substrate 2 may have a plurality of stacked insulating layers or one insulating layer. The top view shape of the insulating substrate 2 is not limited to a rectangular shape and can be appropriately changed.

[0056] like Figure 1 , Figures 3 to 7 As shown in the example, the insulating substrate 2 has a first surface 2a, a second surface 2b located on the opposite side of the first surface 2a, and a plurality of side surfaces 2c located between the first surface 2a and the second surface 2b. The first surface 2a of the insulating substrate 2 may be a flat surface or may have concavo-convex surfaces. The second surface 2b of the insulating substrate 2 may be a flat surface or may have concavo-convex surfaces. The insulating substrate 2 may have a recess 21 for accommodating the battery 200, and the recess 21 may be open on the first surface 2a. The top view shape of the recess 21 of the insulating substrate 2 may be, for example, circular. 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 top view size of the recess 21 of the insulating substrate 2 may be one circle larger than the top view size of the battery 200. The depth of the recess 21 of the insulating substrate 2 may be the same as the thickness of the battery 200. The top view shape of the recess 21 of the insulating substrate 2 is not limited to a circular shape, and may also be changed according to the top view shape of the battery 200.

[0057] like Figure 1 , Figures 3 to 7As shown in the example, the battery package 1 may have a frame 3, and the frame 3 is configured to surround the recess 21 on the first surface 2a of the insulating substrate 2. The frame 3 may have an insulating frame 31, and the insulating frame 31 is configured to surround the recess 21 on the first surface 2a of the insulating substrate 2. The insulating frame 31 may be made of ceramic and be integrated with the insulating substrate 2. The insulating frame 31 may have a plurality of stacked insulating layers or one insulating layer. The outline shape of the insulating frame 31 in a plan view may be rectangular. The plan view shape of the inner side surface of the insulating frame 31 may be circular. The plan view size of the inner side surface of the insulating frame 31 may be one circle larger than the plan view size of the recess 21 of the insulating substrate 2. The plan view shape of the inner side surface of the insulating frame 31 is not limited to a rectangular shape, and may also be changed according to the plan view shape of the recess 21 of the insulating substrate 2, the shape or configuration of the second electrode 7 described later, and the shape or configuration of the recessed step 31d described later.

[0058] like Figure 1 , Figures 3 to 7 As shown in the example, the insulating frame 31 can have a plurality of concave step portions 31d as receiving portions, and the plurality of concave step portions 31d can be located on the inner side of the insulating frame 31. The plurality of concave step portions 31d of the insulating frame 31 can be arranged rotationally symmetrically with the center of the insulating frame 31 as a reference. In the first embodiment, the number of the concave step portions 31d as receiving portions is two, but it can also be more than three. An annular concave step portion not shown can also be located on the inner side of the insulating frame 31 instead of the plurality of concave step portions 31d as receiving portions.

[0059] like Figure 1 , Figures 3 to 7 As shown in the example, the frame portion 3 may include a frame-shaped metal film 32, and the frame-shaped metal film 32 is arranged to surround the opening side of the insulating frame 31 on the upper surface of the insulating frame 31. The frame-shaped metal film 32 may be bonded to the upper surface of the insulating frame 31. The frame-shaped metal film 32 is composed of a metallized metal powder containing tungsten (W), molybdenum (Mo), manganese (Mn), silver (Ag) or copper (Cu) as a component.

[0060] like Figure 1 , Figure 3 as well as Figure 4 As shown in the example, the frame portion 3 may have a metal frame 33, and the metal frame 33 is configured to surround the opening side of the insulating frame 31 on the frame-shaped metal film 32. The metal frame 33 can be bonded to the frame-shaped metal film 32 with solder. The top view shape of the metal frame 33 can be a rectangular frame. As the constituent material of the metal frame 33, a material with a small thermal expansion difference with ceramics can be used, for example, an iron-nickel (Fe-Ni) alloy or an iron-nickel-cobalt (Fe-Ni-Co) alloy can be used.

[0061] like Figures 5 to 7 As in the example shown, the battery package 1 may omit the metal frame 33 from the structure of the frame portion 3. In this case, the battery package 1 and the battery module 100 can be made thinner.

[0062] like Figures 2 to 4 , Figure 6 as well as Figure 7 As shown in the example, the battery package 1 may have a first external electrode 4 located on the second surface 2b of the insulating substrate 2. The first external electrode 4 may be located on one end side of the second surface 2b of the insulating substrate 2. The first external electrode 4 may be printed on the second surface 2b of the insulating substrate 2 and sintered by firing. The first external electrode 4 may extend from the second surface 2b of the insulating substrate 2 to the side surface 2c (including the corner between multiple side surfaces 2c). The first external electrode 4 may be electrically connected to the first electrode of the mounting substrate via solder. The first external electrode 4 is composed of the same metallized metal powder as the frame-shaped metal film 32.

[0063] like Figures 2 to 4 , Figure 6 as well as Figure 7 As shown in the example, the battery package 1 may have a second external electrode 5 located on the second surface 2b of the insulating substrate 2. The second external electrode 5 may be located on the other end side of the second surface 2b of the insulating substrate 2. The second external electrode 5 may be printed on the second surface 2b of the insulating substrate 2 and sintered by firing. The second external electrode 5 may extend from the second surface 2b of the insulating substrate 2 to the side surface 2c. The second external electrode 5 may be electrically connected to the second electrode of the mounting substrate via solder. The second external electrode 5 is composed of the same metallized metal powder as the frame-shaped metal film 32 or the like.

[0064] like Figure 3 , Figure 4 , Figure 6 as well as Figure 7 As shown in the example, the battery package 1 may have a first electrode 6, and the first electrode 6 is located on the bottom surface of the recess 21 of the insulating substrate 2. The first electrode 6 can be printed on the bottom surface of the recess 21 of the insulating substrate 2 and sintered by firing. The first electrode 6 can be electrically connected to the lower electrode 201 of the battery 200, and the battery 200 is accommodated in the recess 21 of the insulating substrate 2. The first electrode 6 can extend from the bottom surface of the recess 21 of the insulating substrate 2 to the inside of the insulating substrate 2. The first electrode 6 can cover the entire bottom surface of the recess 21 of the insulating substrate 2.

[0065] The first electrode 6 is electrically connected to the first external electrode 4 through the first connection wiring J1. The first connection wiring J1 may include a through conductor that penetrates one or more insulating layers and one or more wiring layers located between the insulating layers. The first electrode 6 and the first connection wiring J1 are made of the same metallized metal powder as the frame-shaped metal film 32.

[0066] In the case where the first electrode 6 extends to the inside of the insulating substrate 2, the first connection wiring J1 is located in the thick portion of the insulating substrate 2, and therefore has excellent strength. In addition, the first electrode 6 may not extend to the inside of the insulating substrate 2. In this case, the first connection wiring J1 passes through the bottom surface of the recess 21 of the insulating substrate 2 to the second surface 2b, and the path from the battery 200 to the first external electrode 4 is short, and becomes low resistance, thereby being able to improve the efficiency of extracting power from the battery 200. When viewed from above, the first electrode 6 and the first external electrode 4 may overlap, and if the first connection wiring J1 is located in the overlapping portion, the first connection wiring J1 becomes low resistance.

[0067] like Figure 1 , Figures 3 to 7 As shown in the example, the battery package 1 may have a second electrode 7, and the second electrode 7 is located between the recess 21 on the first surface 2a of the insulating substrate 2 and the insulating frame 31 (frame 3). In a top view of the first surface 2a of the insulating substrate 2, the second electrode 7 may be located between the recess 21 on the surface including the first surface 2a of the insulating substrate 2 and the frame 3. The second electrode 7 may be printed between the recess 21 on the first surface 2a of the insulating substrate 2 and the insulating frame 31, and sintered by firing. The second electrode 7 may extend between the insulating substrate 2 and the insulating frame 31. The second electrode 7 can be electrically connected to the upper electrode 202 of the battery 200, and the battery 200 is accommodated in the recess 21 of the insulating substrate 2. The second electrode 7 may be located at a plurality of locations in the circumferential direction of the recess 21 on the first surface 2a of the insulating substrate 2. For example, as Figure 1 , Figure 3 as well as Figure 4 As shown, the two second electrodes 7 may be located at opposite corners of the rectangular insulating substrate 2. In this case, the plurality of second electrodes 7 may also be electrically connected via internal wiring not shown. Figures 5 to 7 As shown, the second electrode 7 may be formed in a ring shape so as to surround the opening side of the recessed portion 21 of the insulating substrate 2 .

[0068] The second electrode 7 is electrically connected to the second external electrode 5 through the second connection wiring J2. The second connection wiring J2 may include a through conductor that penetrates one or more insulating layers and one or more wiring layers located between the insulating layers. The second electrode 7 and the second connection wiring J2 are made of the same metallized metal powder as the frame-shaped metal film 32.

[0069] When the second electrode 7 extends between the insulating substrate 2 and the insulating frame 31, the second connection wiring J2 is located in the thick portion of the insulating substrate 2, and therefore has excellent strength. In addition, the second electrode 7 may not extend between the insulating substrate 2 and the insulating frame 31. In this case, the second connection wiring J2 passes through the periphery of the recess 21 of the first surface 2a of the insulating substrate 2 to the second surface 2b, and the path from the battery 200 to the second external electrode 5 is short, resulting in low resistance, thereby improving the efficiency of extracting power from the battery 200. When viewed from above, the second electrode 7 and the second external electrode 5 can overlap, and if the second connection wiring J2 is located in the overlapping portion, the second connection wiring J2 becomes low resistance.

[0070] like Figure 3 , Figure 4 , Figure 6 ,as well as Figure 7 As shown in the example, when the insulating substrate 2 and the insulating frame 31 are composed of, for example, an alumina sintered body, the insulating substrate 2 and the insulating frame 31 are manufactured as follows. A slurry is prepared by adding an appropriate organic binder and a solvent to raw material powders such as alumina and silicon oxide and mixing them. The slurry is formed into a sheet by a scraper method or a calendering roller method to prepare a ceramic green sheet for the insulating layer. Furthermore, the ceramic green sheet for the insulating layer is subjected to appropriate punching processing to form a hole with a recess 21 and a recessed step portion 31d. Then, a plurality of ceramic green sheets for the insulating layer are stacked to prepare a laminate. Then, the insulating substrate 2 and the insulating frame 31 are manufactured by firing the laminate at a high temperature (about 1300 to 1600°C).

[0071] When the frame-shaped metal film 32, the first external electrode 4, the second external electrode 5, the first electrode 6, the first connection wiring J1, the second electrode 7, and the second connection wiring J2 are, for example, tungsten metallization layers, they can be formed as follows. Tungsten powder is mixed with an organic solvent and an organic binder to prepare a metal paste, and the prepared metal paste is printed on a predetermined position of a ceramic green sheet for an insulating layer by a screen printing method or the like, and the laminate is fired to form the frame-shaped metal film 32, the first external electrode 4, the second external electrode 5, the first electrode 6, the wiring layer of the first connection wiring J1, the second electrode 7, and the wiring layer of the second connection wiring J2. Holes for through conductors are provided at predetermined positions of the ceramic green sheet for the insulating layer, and the metal paste is filled in the holes for through conductors to form through conductors of the first connection wiring J1 and through conductors of the second connection wiring J2.

[0072] The nickel plating layer / gold plating layer can be used as a metal plating layer to cover the surface of the frame-shaped metal film 32, the first external electrode 4, the second external electrode 5, the first electrode 6, the first connection wiring J1, the second electrode 7, and the second connection wiring J2 exposed to the outside by a plating method such as an electrolytic plating method or an electroless plating method. In this way, corrosion of the frame-shaped metal film 32, the first external electrode 4, and the second external electrode 5 can be effectively reduced. The metal plating layer is not limited to the nickel plating layer / gold plating layer, and can also be other metal plating layers including nickel plating layer / palladium plating layer / gold plating layer.

[0073] like Figure 1 , Figures 2 to 7 As shown in the example, the battery package 1 may include a conductive metal plate 8, and the conductive metal plate 8 uses elastic force to press the battery 200 toward the bottom surface side of the recessed portion 21 of the insulating substrate 2. The conductive metal plate 8 may be located on the opening side of the recessed portion 21 of the insulating substrate 2. The conductive metal plate 8 may be located inside the insulating frame 31. The conductive metal plate 8 may include a metal plate body 81, and the metal plate body 81 is electrically connected to the upper surface electrode 220 of the battery 200. The top view shape of the metal plate body 81 may be, for example, a circular shape.

[0074] The metal plate body 81 can be set to a size that substantially covers the opening of the recessed portion 21 of the insulating substrate 2. In other words, the metal plate body 81 can be set to a size that covers the upper electrode 220 of the battery 200, and the battery 200 is accommodated in the recessed portion 21 of the insulating substrate 2. The metal plate body 81 can be connected to the second electrode 7 in a state of covering 50% or more of the opening area of ​​the recessed portion 21 of the insulating substrate 2. In other words, the metal plate body 81 can be electrically connected to at least 50% of the area of ​​the upper electrode 220 of the battery 200.

[0075] like Figure 1 , Figure 3 , Figure 5 as well as Figure 6 As shown in the example, connecting pieces 82 electrically connected to the second electrode 7 from above can be provided at a plurality of locations on the peripheral portion of the metal plate body 81. In other words, the conductive metal plate 8 can have a plurality of connecting pieces 82 on its peripheral portion as connecting portions electrically connected to the second electrode 7 from above. Each connecting piece 82 can also be a strip-shaped portion protruding outward from the metal plate body 81. The plurality of connecting pieces 82 are part of the peripheral portion of the conductive metal plate 8. The plurality of connecting pieces 82 can be arranged rotationally symmetrically with the center of the metal plate body 81 as a reference. In the case where each connecting piece 82 is a strip-shaped portion protruding outward from the metal plate body 81, the elastic force of each connecting piece 82 can be adjusted by adjusting the width dimension of each connecting piece 82, so that the connection condition (connectivity) of each connecting piece 82 with the second electrode 7 can be adjusted.

[0076] like Figure 1 and Figure 5 As shown in the example, each connecting piece 82 can extend toward the corner 3C of the frame 3. Each connecting piece 82 can extend toward the corner of the insulating substrate 2. Figure 8 As in the example shown, each connection piece 82 may extend toward the side portion (the middle portion between the corner portions 3C) of the frame portion 3. In the first embodiment, the number of connection pieces 82 is two, but it may be one or three or more.

[0077] like Figure 1 , Figure 4 , Figure 5 as well as Figure 7 As shown in the example, a plurality of stopper pieces 83 may be provided at the peripheral portion of the metal plate body 81, and the stopper pieces 83 are stoppered to the concave step portion 31d of the insulating frame 31 from below. In other words, the conductive metal plate 8 has a plurality of stopper pieces 83 at its peripheral portion as stopper portions that are stoppered to the concave step portion 31d of the insulating frame 31 from below. Each stopper piece 83 may also be a band-shaped portion protruding outward from the metal plate body 81. The plurality of stopper pieces 83 are part of the peripheral portion of the conductive metal plate 8. The plurality of stopper pieces 83 may be arranged rotationally symmetrically with the center of the metal plate body 81 as a reference.

[0078] like Figure 1 and Figure 5 As shown in the example, each stopper 83 may extend toward the corner 3C of the frame 3. Each connecting piece 82 may extend toward the corner 3C of the frame 3, and each stopper 83 may extend toward the corner 3C of the frame 3. In this case, the two connecting pieces 82 may extend along one diagonal direction of the rectangular insulating substrate 2, and the two stopper pieces 83 may extend along the other diagonal direction of the rectangular insulating substrate 2. In addition, as Figure 8 As in the example shown, each locking piece 83 may extend toward the side of the frame portion 3. In the first embodiment, the number of the locking pieces 83 is two, but may be three or more.

[0079] In the battery package 1, the locking pieces 83 of the conductive metal plate 8 are locked to the concave step portions 31d of the insulating frame 31 from below, so that the conductive metal plate 8 presses the battery 200 toward the bottom surface side of the concave portion 21 of the insulating substrate 2 by elastic force. In this way, the battery 200 can be mechanically fixed to the bottom of the concave portion 21 of the insulating substrate 2. In the case where each locking piece 83 is a strip-shaped portion protruding outward from the metal plate body 81, the elastic force of each locking piece 83 can be adjusted by the width size of each locking piece 83.

[0080] like Figure 3 , Figure 4 , Figure 6 as well as Figure 7As shown in the example, the battery package 1 can have a flat cover 9 that closes the opening of the frame 3. The top view shape of the cover 9 can be, for example, rectangular. The cover 9 can be joined to the frame 3. The cover 9 can be electrically insulated from the conductive metal plate 8. The cover 9 is made of, for example, ceramic or metal. As the constituent material of the cover 9, a material with a small thermal expansion difference with ceramic can be used, for example, iron-nickel (Fe-Ni) alloy, iron-nickel-cobalt (Fe-Ni-Co) alloy can be used. As long as the cover 9 can close the opening of the frame 3, the top view shape of the cover 9 can also be a shape other than a rectangle.

[0081] The cover 9 and the frame 3 may be joined by, for example, a joining material such as brazing material. The cover 9 and the frame 3 may also be joined by a joining material such as glass, brazing material, or resin material to improve the airtightness of the battery module 100. When the cover 9 and the frame 3 made of ceramic are joined by brazing material, the metal film may be located at the outer edge of the lower surface of the cover 9, and the metal film may be, for example, the same structure as the frame-shaped metal film 32.

[0082] The cover body 9 and the metal frame body 33 made of metal can be joined by welding such as seam welding, for example, to improve the airtight sealing of the battery module 100. In the case where the metal frame body 33 is omitted from the structure of the frame portion 3, the cover body 9 made of metal can be joined to the frame-shaped metal film 32 by welding such as direct seam welding, laser welding, or electron beam welding. The joining using seam welding, direct seam welding, laser welding, or electron beam welding is a joining performed by local heating of the joining portion, and therefore, compared with the case of joining using overall heating (reflow heating), that is, soldering, the thermal influence on the battery 200 becomes smaller.

[0083] The airtight sealing of the battery package 1 can also be performed in a low dew point of -40°C or less, such as a nitrogen environment, an argon environment, or a vacuum environment. As a result, since the surrounding area of ​​the battery 200 can be maintained in a low dew point environment, it is possible to prevent moisture or oxygen from invading from the outside of the battery package 1, and the possibility of degradation of the battery material of the battery 200 can be reduced. In addition, before the battery package 1 is sealed, the moisture inside the battery package 1 can also be evaporated by pre-drying or the like.

[0084] like Figure 1 , Figure 3 , Figure 5 as well as Figure 6As shown in the example, the insulating frame 31 has a plurality of first cutout portions 31n connected to the recess 21 of the insulating substrate 2 on its upper surface. The plurality of first cutout portions 31n can be arranged rotationally symmetrically with the center of the insulating frame 31 as a reference. When viewed from above, the second electrode 7 can overlap with the first cutout portions 31n of the insulating frame 31. When viewed from above, the top end side of each connecting piece 82 of the conductive metal plate 8 can overlap with each first cutout portion 31n of the insulating frame 31. In other words, in a state before the cover body 9 closes the opening of the frame portion 3, the upper side (upper) of each connecting piece 82 of the conductive metal plate 8 can be open.

[0085] The insulating frame 31 may have a plurality of second cutouts on the upper side of the concave step portion 31d. When viewed from above, a portion of each retaining piece 83 of the conductive metal plate 8 may overlap with each second cutout of the insulating frame 31. Figure 1 and Figure 5 As in the example shown, the battery package 1 can omit the second cutout portion from the structure of the insulating frame 31. The insulating frame 31 having the plurality of first cutout portions 31n and the plurality of second cutout portions is formed by punching a ceramic green sheet for an insulating layer.

[0086] like Fig. 9 and Fig.10 As shown in the example, the insulating frame 31 may also have a guide portion 31g on the upper side of the concave step portion 31d. The cross-sectional shape of the guide portion 31g of the insulating frame 31 may be formed in a stepped or tapered shape so as to approach the center line 21s of the concave portion 21 of the insulating substrate 2 toward the bottom. The insulating frame 31 having the guide portion 31g is formed by punching a ceramic green sheet for the insulating layer.

[0087] like Figure 1 , Figures 3 to 7 As shown in the example, the battery module 100 of the first embodiment includes the battery package 1 of the first embodiment and a battery 200, and the battery 200 is accommodated in the recess 21 of the insulating substrate 2 of the battery package 1. The lower electrode 201 of the battery 200 can be electrically connected to the first electrode 6. The upper electrode 202 of the battery 200 can be electrically connected to the conductive metal plate 8. The first external electrode 4 and the second external electrode 5 are located on the second surface 2b of the insulating substrate 2, so that the battery package 1 and the battery module 100 can be surface-mounted on the mounting substrate.

[0088] The battery 200 can be any battery having a positive electrode or a negative electrode on the top and bottom, for example, it can be an all-solid battery in which a negative electrode layer, an electrolyte layer, and a positive electrode layer are stacked. The battery 200 can have a collector on the outside of the negative electrode layer and the outside of the positive electrode layer, respectively. One of the negative electrode layer and the positive electrode layer of the all-solid battery is the bottom electrode 210 of the battery 200, and the other layer of the negative electrode layer and the positive electrode layer of the all-solid battery is the top electrode 220 of the battery 200. In addition, the battery 200 can also be a coin-shaped battery in which the positive electrode layer, the electrolyte layer, the negative electrode layer, and the collector layer are sealed in a metal outer packaging material. One electrode of the coin-shaped battery is the bottom electrode 210 of the battery 200, and the other electrode of the coin-shaped battery is the top electrode 220 of the battery 200.

[0089] According to the battery package 1 and the battery module 100, the second electrode 7 as a metallized pad is located between the recessed portion 21 on the surface including the first surface 2a of the insulating substrate 2 and the frame portion 3 when viewed from above the first surface 2a of the insulating substrate 2. Therefore, in the manufacturing stage of the battery module 100, the second electrode 7 is located in a position that can be seen from the appearance, and the finished state of the battery package 1 can be easily confirmed. Specifically, the surface state of the second electrode 7 can be confirmed (including confirmation of defects during printing) and the thickness of the plating layer can be measured.

[0090] In addition, according to the battery package 1 and the battery module 100, the conductive metal plate 8 has a plurality of connection pieces 82 at its peripheral portion as a connection portion electrically connected from above to the second electrode 7. Therefore, in the manufacturing stage of the battery module 100, the connection state between the second electrode 7 as a metallized disk and the plurality of connection pieces 82 can be easily confirmed by appearance.

[0091] Therefore, according to the first embodiment of the present invention, during the manufacturing stage of the battery module 100, the battery modules 100 can be easily distinguished between good and defective products by visual inspection, thereby reducing the possibility of sudden outflow of defective products (effect (1)).

[0092] According to the battery package 1 and the battery module 100, the cover 9 is electrically insulated from the conductive metal plate 8. Therefore, according to the first embodiment of the present invention, the possibility of a short circuit between the cover 9 and other components can be reduced, and power can be efficiently extracted from the battery 200 without discharging from the cover 9 to the outside (action effect (2)).

[0093] In particular, when the conductive metal plate 8 is located inside the insulating frame 31, the insulation between the second electrode and the cover 9 can be further improved. Therefore, according to the first embodiment of the present invention, the possibility of a short circuit between the conductive metal plate 8 and the cover 9 due to the diffusion of solder can be reduced (effect (3)).

[0094] When the metal plate body 81 is connected to the second electrode 7 in a state of covering 50% or more of the opening area of ​​the recessed portion 21 of the insulating substrate 2, the metal plate body 81 can be electrically connected to at least 50% or more of the area of ​​the upper electrode 202 of the battery 200. Thus, according to the first embodiment of the present invention, the connection resistance between the metal plate body 81 and the upper electrode 220 of the battery 200 is reduced, and the power extraction efficiency is improved. In addition, when the cover 9 is joined or the battery module 100 is installed, the battery 200 can be protected from the influence of radiant heat from the cover 9 (action effect (4)).

[0095] When each connecting piece 82 extends toward the corner 3C of the frame 3, the size of the insulating substrate 2 and the size of the frame 3 in a plan view can be reduced compared to when the connecting piece 82 extends toward the side of the frame 3. Thus, according to the first embodiment of the present invention, the battery package 1 and the battery module 100 can be made compact (effect (5)).

[0096] When each locking piece 83 extends toward the corner 3C of the frame 3, the size of the insulating substrate 2 and the size of the frame 3 in a plan view can be reduced compared to when each locking piece 83 extends toward the side of the frame 3. Thus, according to the first embodiment of the present invention, the battery package 1 and the battery module 100 can be made more compact (effect (6)).

[0097] When each second electrode 7 overlaps with each first cutout portion 31n of the insulating frame 31 in a plan view, each connection piece 82 can be easily electrically connected to the second electrode 7 from above without causing each connection piece 82 to contact the inner side surface of the insulating frame 31. Therefore, according to the first embodiment of the present invention, the assemblability (manufacturability) of the battery module 100 can be improved, and the positional deviation of each connection piece 82 in the plane direction (direction along the first surface 2a) can be suppressed, thereby improving the connectivity between each connection piece 82 and the second electrode 7.

[0098] When a portion of each locking piece 83 overlaps with each second cutout portion of the insulating frame 31 in a plan view, each locking piece 83 is easily elastically deformed and easily inserted into and locked in the concave step portion 31d of the insulating frame 31. Thus, according to the first embodiment of the present invention, the assemblability of the battery module 100 can be improved.

[0099] When the cross-sectional shape of the guide portion 31g of the insulating frame 31 is stepped or tapered as described above, each locking piece 83 is easily elastically deformed and easily inserted into and locked in the concave step portion 31d of the insulating frame 31. Thus, according to the first embodiment of the present invention, the assemblability of the battery module 100 can be improved.

[0100] [Second embodiment]

[0101] Reference Figures 11 to 23 A battery package 1A and a battery module 100A according to the second embodiment will be described. Fig.11 It is a schematic plan view showing a battery package 1A and a battery module 100A according to the second embodiment. Fig.12 yes Fig.11 Schematic perspective view of a battery package 1A is shown.

[0102] Fig.13 yes Fig.11 Schematic perspective view of a battery package 1A is shown. Fig.14 is along Fig.11 Schematic cross-sectional view along line XIV-XIV in FIG. Fig.15 is along Fig.11 Schematic cross-sectional view of line XV-XV in FIG. Fig.16 and Fig.17 This is a schematic cross-sectional view showing a battery package 1A according to another mode of the second embodiment.

[0103] like Figures 11 to 15 As shown in the example, the battery module 100A of the second embodiment includes a battery package 1A of the second embodiment and a battery 200 mounted on the battery package 1A. The battery package 1A of the second embodiment has the same structure as the battery package 1 of the first embodiment except for a part of the structure. The structure of the battery package 1A of the second embodiment that is different from the battery package 1 of the first embodiment will be described. For the sake of convenience, the same reference numerals are attached to components having the same functions as the components described in the first embodiment.

[0104] like Fig.11 As shown in the example, the insulating frame 31 may have two inner corners 31C on its inner side. The two inner corners 31C may be arranged rotationally symmetrically with the center of the insulating frame 31 as a reference. In the second embodiment, the number of the concave step portions 31d as the receiving portion (fixing portion) is two, but it may be more than three. The insulating frame 31 may have an annular concave step portion on its inner side instead of a plurality of concave step portions 31d.

[0105] like Fig.11 , Fig.12 as well as Fig.14As shown in the example, the second electrode 7 may be located between the recessed portion 21 on the first surface 2a of the insulating substrate 2 and the inner corner portion 31C side of the insulating frame body 31. In a top view of the first surface 2a of the insulating substrate 2, the second electrode 7 may be located between the recessed portion 21 on the surface including the first surface 2a of the insulating substrate 2 and the frame portion 3. The second electrode 7 may be bonded between the recessed portion 21 on the first surface 2a of the insulating substrate 2 and the inner corner portion 31C side of the insulating frame body 31. The second electrode 7 may extend between the insulating substrate 2 and the insulating frame body 31.

[0106] like Fig.11 As shown in the example, each connection piece 82 of the conductive metal plate 8 may extend toward the inner corner 31C of the insulating frame 31. Since each connection piece 82 of the conductive metal plate 8 extends as described above, the upper side (upper side) of each connection piece 82 of the conductive metal plate 8 may be open before the cover 9 closes the frame 3.

[0107] like Fig.14 and Fig.16 As shown in the example, each connecting piece 82 of the conductive metal plate 8 may have an inverted U-shaped bent portion 82f, and the inverted U-shaped bent portion 82f straddles the edge of the recessed portion 21 of the insulating substrate 2. Fig.17 As shown in the example, each connecting piece 82 of the conductive metal plate 8 may have an L-shaped bent portion 82f that straddles the edge of the recessed portion 21 of the insulating substrate 2. Fig.16 and Fig.17 As in the example shown, the tip end side (top end side) of each connection piece 82 of the conductive metal plate 8 may be bent in an arc shape.

[0108] In the battery package 1A, the locking pieces 83 of the conductive metal plate 8 are locked to the concave step portions 31d of the insulating frame 31 from below, so that the conductive metal plate 8 uses elastic force to press the battery 200 toward the bottom surface side of the concave portion 21 of the insulating substrate 2. In this way, the battery 200 can be mechanically fixed to the bottom of the concave portion 21 of the insulating substrate 2.

[0109] like Fig.11 and Fig.12 As shown in the example, the battery module 100A of the second embodiment includes the battery package 1A of the second embodiment and the battery 200, and the battery 200 is accommodated in the recess 21 of the insulating substrate 2 of the battery package 1A. The lower electrode 201 of the battery 200 can be electrically connected to the first electrode 6. The upper electrode 202 of the battery 200 can be electrically connected to the conductive metal plate 8. The first external electrode 4 and the second external electrode 5 are located on the second surface 2b of the insulating substrate 2, so that the battery package 1A and the battery module 100A can be surface-mounted on the mounting substrate.

[0110] According to the battery package 1A and the battery module 100A of the second embodiment, the second electrode 7 as a metallized disk is located between the recessed portion 21 on the surface including the first surface 2a of the insulating substrate 2 and the frame portion 3 when viewed from above the first surface 2a of the insulating substrate 2. Therefore, in the manufacturing stage of the battery module 100A, the second electrode 7 is located in a position that can be seen from the appearance, and the finished state of the battery package 1A can be easily confirmed. Specifically, the surface state of the second electrode 7 can be confirmed (including confirmation of defects during printing) and the thickness of the plating layer can be measured.

[0111] In addition, according to the battery package 1A and the battery module 100A, the conductive metal plate 8 has a plurality of connection pieces 82 at its peripheral edge portion as connection portions electrically connected from above to the second electrode 7. Therefore, in the manufacturing stage of the battery module 100A, the connection state between the second electrode 7 as a metallized disk and the connection piece 82 of the conductive metal plate 8 can be easily confirmed by appearance.

[0112] Therefore, according to the second embodiment of the present invention, in the manufacturing stage of the battery module 100A, it is possible to easily visually distinguish good and bad battery modules 100A, without worrying about sudden outflow of bad products.

[0113] In a state before the cover 9 closes the frame 3, when the upper side of each connection piece 82 of the conductive metal plate 8 is open, each connection piece 82 can be easily electrically connected to the second electrode 7 from above without causing each connection piece 82 to contact the inner side surface of the insulating frame 31. Therefore, according to the second embodiment of the present invention, the assemblability (manufacturability) of the battery module 100A can be improved.

[0114] When the second electrode 7 is located between the recessed portion 21 on the first surface 2a of the insulating substrate 2 and the inner corner portion 31C side of the insulating frame 31, the area of ​​the second electrode 7 can be increased. Therefore, each connection piece 82 can be easily electrically connected to the corresponding second electrode 7 from above, and the connection strength between the connection piece 82 and the second electrode 7 can be improved. Therefore, according to the second embodiment of the present invention, the assemblability and connection reliability of the battery module 100A can be improved.

[0115] When each connection piece 82 has a bent portion 82f, each connection piece 82 can be easily electrically connected to the corresponding second electrode 7 from above without causing each connection piece 82 to contact (interfere with) the edge of the recessed portion 21 of the insulating substrate 2. In addition, each connection piece 82 can set the elastic force of the conductive metal plate 8 according to the shape of the bent portion 82f, and can maintain the connection state between the connection piece 82 and the second electrode 7. Therefore, according to the second embodiment of the present invention, the assembly performance and connection reliability of the battery module 100A can be improved.

[0116] When the top end side of each connection piece 82 is bent into an arc shape, even if the top end side of the connection piece 82 contacts the inner side surface of the insulating frame 31, it will not be caught, and each connection piece 82 can be easily electrically connected to each second electrode 7 from above. Therefore, according to the second embodiment of the present invention, the assemblability of the battery module 100A can be improved.

[0117] In addition, in the second embodiment of the present invention, the same effects as the above-mentioned effects (2), (3), (4), (5), and (6) are exerted.

[0118] (Variation 1 of the Second Embodiment)

[0119] Reference Figures 18 to 20 , a battery package 1A according to a first modification of the second embodiment will be described. Fig.18 It is a schematic plan view showing a battery package 1A according to Modification 1 of the second embodiment. Fig.19 It is a schematic plan view showing a state where the locking piece 83 of the conductive metal plate 8 is inserted into the insertion port 31 i of the insulating frame body 31 . Fig. 20 is along Fig.18 A schematic cross-sectional view of the line XX-XX in FIG.

[0120] like Figures 18 to 20 As shown in the example, in the battery package 1A of the modification 1 of the second embodiment, the insulating frame 31 may have a plurality of insertion openings 31i opened to the upper side and the recessed portion 21 side of the insulating substrate 2. Each insertion opening 31i of the insulating frame 31 may be connected to each recessed step portion 31d.

[0121] According to the battery package 1A of the modification 1 of the second embodiment, the conductive metal plate 8 is simply formed in one direction ( Fig.19 By rotating the battery module 100A in the direction of the arrow in the figure, each locking piece 83 can be inserted into each insertion port 31i of the insulating frame 31, and each locking piece 83 can be easily locked from below to each concave step portion 31d of the insulating frame 31. Therefore, according to the modification of the second embodiment of the present invention, the assemblability (manufacturability) of the battery module 100A can be improved.

[0122] Furthermore, also in the first modification of the second embodiment of the present invention, the same operational effects as those of the second embodiment described above are achieved.

[0123] (Variation 2 of the Second Embodiment)

[0124] Reference Fig.21 and Fig. 22 Next, a battery package 1A according to a second modification of the second embodiment will be described. Fig.21It is a schematic plan view showing a battery package and a battery module according to Modification 2 of the second embodiment. Fig. 22 is along Fig.21 Schematic cross-sectional view of line XXII-XXII in FIG.

[0125] like Fig.21 and Fig. 22 As shown in the example, the insulating frame 31 may also have four inner corners 31C on its inner side. The four inner corners 31C may be arranged rotationally symmetrically with the center of the insulating frame 31 as a reference. In addition, in the modified example 2 of the second embodiment, the number of the concave step portions 31d may also be 4. The number of the second electrodes 7 may also be 4. The number of the connecting pieces 82 and the number of the locking pieces 83 may also be 4 respectively. The number of the concave step portions 31d, the number of the second electrodes 7, the number of the connecting pieces 82, and the number of the locking pieces 83 are not limited to 4, and may also be 3 or 5 or more.

[0126] According to the battery package 1A of the second modification of the second embodiment, the contact area between the second electrode 7 and the connection sheet 82 is increased, and the connection between the second electrode 7 and the conductive metal plate 8 becomes a low-resistance connection. Therefore, according to the second modification of the second embodiment of the present invention, the power of the battery 200 can be extracted more efficiently.

[0127] In addition, according to the battery package 1A of the second modification of the second embodiment, the conductive metal plate 8 can use the elastic force to uniformly press the battery 200 to the bottom surface side of the recessed portion 21 of the insulating substrate 2 with a stronger force. Therefore, according to the modification of the second embodiment of the present invention, the fixing force of the battery 200 relative to the bottom of the recessed portion 21 of the insulating substrate 2 can be improved, and the long-term reliability of the battery module 100A can be improved. In addition, the connectivity between the lower electrode 201 of the battery 200 and the first electrode 6 can be improved, and the power of the battery 200 can be extracted more efficiently.

[0128] Furthermore, also in the second modification of the second embodiment of the present invention, the same operational effects as those of the second embodiment described above are achieved.

[0129] [Third embodiment]

[0130] Reference Figure 23 to Figure 25 , a battery package 1B and a battery module 100B according to a third embodiment will be described. Fig.23 It is a schematic plan view showing a battery package 1B and a battery module 100B according to the third embodiment. Fig.24 is along Fig.23 Schematic cross-sectional view of line XXIV-XXIV in FIG. Fig.25 is along Fig.24 Schematic cross-sectional view of line XXV-XXV in FIG. Fig.26 This is a schematic cross-sectional view showing another form of a battery package 1B according to the third embodiment.

[0131] like Figure 23 to Figure 25 As shown in the example, the battery module 100B of the third embodiment includes a battery package 1B of the third embodiment and a battery 200 mounted on the battery package 1B. The battery package 1B of the third embodiment has the same structure as the battery package 1A of the second embodiment except for a part of the structure. The structure of the battery package 1B of the third embodiment that is different from the battery package 1A of the second embodiment will be described. For the sake of convenience, the same reference numerals are attached to components having the same functions as those described in the first and second embodiments.

[0132] like Figure 23 to Figure 25 As shown in the example, the insulating frame 31 may also have four inner corners 31C on its inner side surface. The four inner corners 31C may be arranged rotationally symmetrically with the center of the insulating frame 31 as a reference. In addition, the recess 21 of the insulating substrate 2 may also have a plurality of concave step portions 21d as a receiving portion, and the plurality of concave step portions 21d may be located on the inner side surface of the recess 21 of the insulating substrate 2. The plurality of concave step portions 21d may be arranged rotationally symmetrically with the center of the recess 21 of the insulating substrate 2 as a reference. In the third embodiment, the number of concave step portions 21d is two, but it may also be three or more. Instead of having a plurality of concave step portions 21d on the inner side surface of the recess 21 of the insulating substrate 2, an annular concave step portion may also be provided.

[0133] like Fig.23 and Fig.25 As shown in the example, each locking piece 83 of the conductive metal plate 8 can be locked to each concave step portion 21d of the insulating substrate 2 from below. In addition, the insulating substrate 2 can have a second cutout portion 22 on the upper side of each concave step portion 21d. The plurality of second cutout portions 22 can be arranged rotationally symmetrically with the center of the concave portion 21 of the insulating substrate 2 as a reference. A portion of each locking piece 83 of the conductive metal plate 8 can overlap with each second cutout portion 22 of the insulating substrate 2 when viewed from above. The battery package 1B can also omit the second cutout portion 22 from the structure of the insulating substrate 2. The insulating substrate 2 having the concave portion 21 and the plurality of second cutout portions 22 is formed by punching a ceramic green sheet for the insulating layer.

[0134] In the battery package 1B, each locking piece 83 of the conductive metal plate 8 is locked from below to the corresponding concave step portion 21d of the concave portion 21 of the insulating substrate 2, so that the conductive metal plate 8 uses elastic force to press the battery 200 toward the bottom surface side of the concave portion 21 of the insulating substrate 2. In this way, the battery 200 can be mechanically fixed to the bottom of the concave portion 21 of the insulating substrate 2.

[0135] like Fig. 27 As in the example shown, the battery package 1B may omit the insulating frame body 31 and the metal frame body 33 from the structure of the frame portion 3. In this case, the battery package 1B and the battery module 100B can be made thinner.

[0136] like Fig.26 As shown in the example, the battery package 1B may also have a cap-shaped cover 9B that closes the opening of the frame portion 3. The cover 9B may be joined to the frame-shaped metal film 32 serving as the frame portion 3. The cover 9B may be electrically insulated from the conductive metal plate 8. The cover 9B is made of, for example, a metal having a small difference in thermal expansion coefficient with ceramics, such as an iron-nickel (Fe-Ni) alloy or an iron-nickel-cobalt (Fe-Ni-Co) alloy. In addition to metal, the cover 9B may also be made of ceramics. In the case where the cover 9B is made of metal, the cover 9B can be manufactured by stamping a metal plate. In the case where the cover 9B is made of ceramics, the structure in which ceramic green sheets are stacked can be fired in the same manner as the insulating substrate 2, or the structure in which ceramic powder is formed into a cap shape by stamping can be fired.

[0137] like Figure 23 to Figure 25 As shown in the example, the battery module 100B of the third embodiment has a battery package 1B of the third embodiment and a battery 200, and the battery 200 is accommodated in a recess 21 of an insulating substrate 2 of the battery package 1B. The lower electrode 210 of the battery 200 can be electrically connected to the first electrode 6. The upper electrode 220 of the battery 200 can be electrically connected to the conductive metal plate 8. The first external electrode 4 and the second external electrode 5 are located on the second surface 2b of the insulating substrate 2, so that the battery package 1B and the battery module 100B can be surface-mounted on the mounting substrate. Fig.24 and Fig.26 In FIG. 1 , only the outer shape of the battery 200 is shown by the double-dashed chain line.

[0138] According to the battery package 1B and the battery module 100B of the third embodiment, the second electrode 7 as the metallized disk is located between the recessed portion 21 on the surface including the first surface 2a of the insulating substrate 2 and the frame portion 3 when viewed from above the first surface 2a of the insulating substrate 2. Therefore, in the manufacturing stage of the battery module 100B, the second electrode 7 is located in a position that can be seen from the appearance, and the finished state of the battery package 1B can be easily confirmed. Specifically, the surface state of the second electrode 7 can be confirmed (including confirmation of defects during printing) and the thickness of the plating layer can be measured.

[0139] In addition, according to the battery package 1B and the battery module 100B, the conductive metal plate 8 has a plurality of connection pieces 82 at its peripheral edge portion as connection portions electrically connected from above to the second electrode 7. Therefore, in the manufacturing stage of the battery module 100B, the connection state between the second electrode 7 as a metallized disk and the connection piece 82 of the conductive metal plate 8 can be easily confirmed by appearance.

[0140] Therefore, according to the third embodiment of the present invention, in the manufacturing stage of the battery module 100B, the battery modules 100B can be easily distinguished between good and defective products by visual inspection, without worrying about the sudden outflow of defective products.

[0141] When a portion of each locking piece 83 overlaps with each second cutout portion 22 of the insulating substrate 2 in a plan view, each locking piece 83 is easily elastically deformed and easily inserted into and locked in the concave step portion 31d of the insulating frame 31. Thus, according to the third embodiment of the present invention, the assemblability of the battery module 100B can be improved.

[0142] Furthermore, according to the third embodiment of the present invention, the same operational effects as those of the second embodiment of the present invention are achieved.

[0143] [Fourth embodiment]

[0144] Reference Figure 27 to Figure 29 , a battery package 1C and a battery module 100C according to a fourth embodiment will be described. Fig. 27 It is a schematic plan view showing a battery package 1C and a battery module 100C according to a fourth embodiment. Fig.28 is along Fig. 27 Schematic cross-sectional view of line XXVIII-XXVIII in FIG. Fig.29 is along Fig. 27 Schematic cross-sectional view of line XXIX-XXIX in FIG.

[0145] like Figure 27 to Figure 29As shown in the example, the battery module 100C of the fourth embodiment includes a battery package 1C of the fourth embodiment and a battery 200 mounted on the battery package 1C. The battery package 1C of the fourth embodiment has the same structure as the battery package 1B of the third embodiment except for a part of the structure. The structure of the battery package 1C of the fourth embodiment that is different from the battery package 1B of the third embodiment will be described. For the sake of convenience, the same reference numerals are attached to components having the same functions as the components described in the first to third embodiments.

[0146] like Figure 27 to Figure 29 As shown in the example, the battery package 1C may include a conductive metal plate 8C, and the conductive metal plate 8C presses the battery 200 toward the bottom side of the recess 21 of the insulating substrate 2 by elastic force. The conductive metal plate 8C may be located on the opening side of the recess 21 of the insulating substrate 2. The conductive metal plate 8C may be located inside the insulating frame 31. The top view shape of the conductive metal plate 8C may be rectangular. The conductive metal plate 8C may include a metal plate body 81C electrically connected to the upper electrode 202 of the battery 200.

[0147] The metal plate body 81C may be sized to substantially cover the opening of the recess 21 of the insulating substrate 2. In other words, the metal plate body 81C may be sized to cover the upper electrode 220 of the battery 200, and the battery 200 is accommodated in the recess 21 of the insulating substrate 2. The metal plate body 81C may be connected to the second electrode 7 in a state where it covers 50% or more of the opening area of ​​the recess 21 of the insulating substrate 2.

[0148] like Fig. 27 and Fig.28 As shown in the example, the conductive metal plate 8C may have two connecting portions 82C at two corners that are electrically connected to the second electrode 7 from above. The two connecting portions 82C may be a part of the peripheral portion of the conductive metal plate 8C, or may be the corners of the rectangular conductive metal plate 8C. The two connecting portions 82C may be arranged at the diagonal positions with the center of the conductive metal plate 8C as a reference. A pair of connecting portions 82C may be provided on the metal plate body 81C.

[0149] like Fig. 27 and Fig.29As shown in the example, the conductive metal plate 8C may have two stopper portions 83C at the remaining two corners, and the two stopper portions 83C may be stopped from below by the concave step portion 21d of the insulating substrate 2. The two stopper portions 83C may be a part of the peripheral portion of the conductive metal plate 8C, or may be a corner portion of the rectangular conductive metal plate 8C. The two stopper portions 83C may be arranged at the diagonal positions with the center of the conductive metal plate 8C as a reference. A pair of stopper portions 83C may be provided on the metal plate body 81C.

[0150] The insulating substrate 2 may have a second cutout 22 on the upper side of each concave step 21d. A portion of each locking piece 83C may overlap with each second cutout 22 of the insulating substrate 2 in a plan view. The battery package 1C may also omit the second cutout 22 from the structure of the insulating substrate 2.

[0151] In the battery package 1C, each locking portion 83C is locked to each concave step portion 21d of the insulating frame 31 from below, so that the conductive metal plate 8C uses elastic force to press the battery 200 toward the bottom surface side of the concave portion 21 of the insulating substrate 2. In this way, the battery 200 can be mechanically fixed to the bottom of the concave portion 21 of the insulating substrate 2.

[0152] like Figure 27 to Figure 29 As shown in the example, the battery module 100C of the fourth embodiment has a battery package 1C of the fourth embodiment and a battery 200, and the battery 200 is accommodated in the recess 21 of the insulating substrate 2 of the battery package 1C. The lower electrode 201 of the battery 200 can be electrically connected to the first electrode 6. The upper electrode 220 of the battery 200 can be electrically connected to the conductive metal plate 8. The first external electrode 4 and the second external electrode 5 are located on the second surface 2b of the insulating substrate 2, so that the battery package 1C and the battery module 100C can be surface-mounted on the mounting substrate. Fig.28 In FIG. 1 , only the outer shape of the battery 200 is shown by the double-dashed chain line.

[0153] According to the battery package 1C and the battery module 100C of the fourth embodiment, the second electrode 7 as the metallized disk is located between the recessed portion 21 on the surface including the first surface 2a of the insulating substrate 2 and the frame portion 3 when viewed from above the first surface 2a of the insulating substrate 2. Therefore, in the manufacturing stage of the battery module 100C, the second electrode 7 is located in a position that can be seen from the appearance, and the finished state of the battery package 1C can be easily confirmed. Specifically, the surface state of the second electrode 7 can be confirmed (including confirmation of defects during printing) and the thickness of the plating layer can be measured.

[0154] In addition, according to the battery package 1C and the battery module 100C, the conductive metal plate 8C has a plurality of connection portions 82C at both corners that are electrically connected from above to the second electrode 7. Therefore, in the manufacturing stage of the battery module 100C, the connection state between the second electrode 7 as a metallized disk and the connection portion 82C can be easily confirmed by appearance.

[0155] Therefore, according to the fourth embodiment of the present invention, in the manufacturing stage of the battery module 100C, the battery modules 100C can be easily distinguished between good and defective products by visual inspection, without worrying about the sudden outflow of defective products.

[0156] When a part of each locking portion 83C overlaps with each second cutout portion 22 of the insulating substrate 2 in a plan view, each locking portion 83C is easily elastically deformed and easily inserted into and locked in the concave step portion 21d of the insulating substrate 2. Thus, according to the fourth embodiment of the present invention, the assemblability of the battery module 100B can be improved.

[0157] Furthermore, according to the fourth embodiment of the present invention, the same operational effects as those of the second embodiment of the present invention are achieved.

[0158] [Fifth embodiment]

[0159] Reference Figure 30 to Figure 32 , a battery package 1D and a battery module 100D according to a fifth embodiment will be described. Fig.30 It is a schematic plan view showing a battery package 1D and a battery module 100D according to a fifth embodiment. Fig.31 is along Fig.30 Schematic cross-sectional view of line XXXI-XXXI in FIG. Fig.32 is along Fig.30 Schematic cross-sectional view of line XXXII-XXXII in FIG.

[0160] like Figure 30 to Figure 32 As shown in the example, the battery module 100D of the fifth embodiment includes a battery package 1D of the fifth embodiment and a battery 200 mounted on the battery package 1D. The battery package 1D of the fifth embodiment has the same structure as the battery package 1B of the third embodiment except for a part of the structure. The structure of the battery package 1D of the fifth embodiment that is different from the battery package 1B of the third embodiment will be described. For the sake of convenience, the same reference numerals are attached to components having the same functions as those described in the first to fourth embodiments.

[0161] like Figure 30 to Figure 32As shown in the example, a plurality of stoppers 10 as receiving portions may be arranged at the edge of the opening side of the recess 21 on the first surface 2a of the insulating substrate 2, instead of the recess 21 of the insulating substrate 2 having a plurality of concave step portions 21d on its inner side surface. The plurality of stoppers 10 may be arranged rotationally symmetrically with respect to the center of the recess 21 of the insulating substrate 2. Each stopper 10 may be located between the recess 21 on the first surface 2a of the insulating substrate 2 and the corner 3C of the insulating frame 31. In the case where each stopper 10 is joined to the first surface 2a of the insulating substrate 2 by solder, a metal film M having the same structure as the frame-shaped metal film 32 may be arranged on the first surface 2a of the insulating substrate 2.

[0162] Each stopper 10 may be opened on the side of the recessed portion 21 of the insulating substrate 2. The conductive metal plate 8 may have a plurality of locking pieces 83 as locking portions at its peripheral edge, and the locking pieces 83 may be locked to the stopper 10 from below.

[0163] In the battery package 1D, the locking pieces 83 of the conductive metal plate 8 are locked to the stoppers 10 from below, so that the conductive metal plate 8 uses elastic force to press the battery 200 toward the bottom surface side of the recessed portion 21 of the insulating substrate 2. In this way, the battery 200 can be mechanically fixed to the bottom of the recessed portion 21 of the insulating substrate 2.

[0164] like Figure 30 to Figure 32 As shown in the example, the battery module 100D of the fifth embodiment includes the battery package 1D of the fifth embodiment and the battery 200, and the battery 200 is accommodated in the recess 21 of the insulating substrate 2 of the battery package 1D. The lower electrode 210 of the battery 200 can be electrically connected to the first electrode 6. The upper electrode 220 of the battery 200 can be electrically connected to the conductive metal plate 8. The first external electrode 4 and the second external electrode 5 are located on the second surface 2b of the insulating substrate 2, so that the battery package 1D and the battery module 100D can be surface-mounted on the mounting substrate.

[0165] According to the battery package 1D and the battery module 100D of the fifth embodiment, the second electrode 7 as the metallized disk is located between the recessed portion 21 on the surface including the first surface 2a of the insulating substrate 2 and the frame portion 3 when viewed from above the first surface 2a of the insulating substrate 2. Therefore, in the manufacturing stage of the battery module 100D, the second electrode 7 is located in a position that can be seen from the appearance, and the finished state of the battery package 1D can be easily confirmed. Specifically, the surface state of the second electrode 7 can be confirmed (including confirmation of defects during printing) and the thickness of the plating layer can be measured.

[0166] In addition, according to the battery package 1D and the battery module 100D, the conductive metal plate 8 has a plurality of connection pieces 82 at its peripheral edge portion as connection portions electrically connected from above to the second electrode 7. Therefore, in the manufacturing stage of the battery module 100D, the connection state between the second electrode 7 as a metallized disk and the conductive metal plate 8 can be easily confirmed by appearance.

[0167] Therefore, according to the fifth embodiment of the present invention, in the manufacturing stage of the battery module 100D, the battery modules 100D can be easily distinguished between good and defective products by visual inspection, without worrying about the sudden outflow of defective products.

[0168] Furthermore, according to the fifth embodiment of the present invention, the same operational effects as those of the third embodiment of the present invention are achieved.

[0169] (Variation 1 of the Fifth Embodiment)

[0170] Reference Figure 33 to Figure 35 A battery package 1D and a battery module 100D according to a modified example of the fifth embodiment will be described. Fig.33 It is a schematic plan view showing a battery package 1D and a battery module 100D according to a modification of the fifth embodiment. Fig.34 It is a schematic plan view showing a state before the locking piece 83 is inserted into the stopper 10 . Fig.35 is along Fig.34 A schematic cross-sectional view of line XXXV-XXXV in FIG.

[0171] like Figure 33 to Figure 35 As in the illustrated example, in the battery package 1D according to the modified example of the fifth embodiment, each stopper 10 may be opened to the side and to the recessed portion 21 side of the insulating substrate 2 .

[0172] According to the battery package 1D of the modified example of the fifth embodiment, the conductive metal plate 8 is simply formed in one direction ( Fig.34 By rotating the battery module 100D in the direction of the arrow in the figure, each locking piece 83 can be inserted into each stopper 10 from the side, and each locking piece 83 can be easily locked to each stopper 10 from below. Therefore, according to the modification of the fifth embodiment of the present invention, the assemblability (manufacturability) of the battery module 100D can be improved.

[0173] In addition, also in the modification 1 of the second embodiment of the present invention, the same functions and effects as those of the above-mentioned second embodiment are exhibited.

[0174] [Other implementation methods]

[0175] The number of batteries 200 housed in the recess 21 of the insulating substrate 2 is not limited to one, and may be a plurality.

[0176] A semiconductor element for controlling the battery 200 can be housed in the recess 21 of the insulating substrate 2. The semiconductor element for controlling the battery includes 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 supply on / off. In addition, electronic components such as coils and capacitors can be housed in the recess 21 of the insulating substrate 2. Such semiconductor elements and electronic components can also be housed in a recess different from the recess 21 that houses the battery 200, for example, in a recess that opens on the second surface 2b of the insulating substrate 2.

[0177] The battery module 100 (100A to 100D) may have a desiccant that absorbs moisture. The desiccant may be located on the lower surface of the cover 9. The desiccant may be located between the inner side surface of the recess 21 of the insulating substrate 2 and the side surface of the battery 200. As the desiccant, for example, silica gel, calcium chloride, etc. may be used. When the battery module 100 (100A to 100D) has a desiccant, it is possible to suppress the deterioration of the battery material of the battery 200 caused by the chemical change between the battery material and moisture.

[0178] In one embodiment, (1) a battery package comprises: an insulating substrate having a first surface, a second surface opposite to the first surface, and a recessed portion opened on the first surface and used to accommodate a battery; a frame portion, the frame portion surrounding the recessed portion on the first surface; a first external electrode, the first external electrode being located on the second surface; a second external electrode, the second external electrode being located on the second surface; a first electrode, the first electrode being located on a bottom surface of the recessed portion and being electrically connected to the first external electrode; and a second electrode, the second electrode being located on a bottom surface of the recessed portion when viewed from above the first surface. The battery comprises a battery cell, a battery cell and a cover body, wherein the cover body is electrically insulated from the conductive metal plate and closes the frame. The battery cell comprises a battery cell, a battery cell and a cover body, wherein the cover body is electrically insulated from the conductive metal plate and closes the frame.

[0179] (2) In the battery package according to (1), the frame portion may include an insulating frame body surrounding the recessed portion on the first surface, and the second electrode may be located inside the insulating frame body.

[0180] (3) In the battery package of (1) or (2), the receiving portion can be a plurality of concave step portions or an annular concave step portion located on the inner side surface of the frame portion, and a portion of the peripheral edge portion of the conductive metal plate can be locked to the concave step portion from below as the locking portion.

[0181] (4) In the battery package of (1) or (2), the receiving portion can be a plurality of concave step portions or an annular concave step portion located on the inner side surface of the concave portion, and a portion of the peripheral edge portion of the conductive metal plate can be locked to the concave step portion from below as the locking portion.

[0182] (5) In the battery package of (1) or (2), the receiving portion may be a plurality of concave step portions or annular concave step portions located on the inner side surface of the frame portion, and the conductive metal plate may have a plurality of locking pieces on its peripheral edge as the locking portion, and the plurality of locking pieces are locked to the concave step portions from below.

[0183] (6) In the battery package of (1) or (2), the receiving portion may be a plurality of concave step portions or annular concave step portions located on the inner side surface of the concave portion, and the conductive metal plate may have a plurality of locking pieces on its peripheral edge as the locking portion, and the plurality of locking pieces are locked to the concave step portions from below.

[0184] (7) In the battery package described in any one of (1) to (6), the upper side (upper side) of the connecting portion may be open before the cover closes the frame portion.

[0185] (8) In the battery package described in any one of (1) to (6), the insulating frame may have a first cutout portion connected to the recessed portion on its upper surface, and the second electrode may overlap the first cutout portion in a plan view.

[0186] (9) In the battery package described in any one of (1) to (8) above, the connection portion may extend toward a corner of the frame portion.

[0187] (10) In the battery package described in any one of (1) to (9), the connection portion may have a bent portion that straddles an edge of the recessed portion.

[0188] (11) In the battery package described in any one of (1) to (10) above, the front end side of the connecting portion may be curved in an arc shape.

[0189] (12) In the battery package according to (5), the frame portion may have a plurality of second cutout portions on an upper side of the concave step portion, and a portion of each locking piece may overlap with the second cutout portion in a plan view.

[0190] (13) In the battery package of (5), the frame portion may have a guide portion on the upper side of the concave step portion, and the cross-sectional shape of the guide portion may be formed in a stepped or tapered shape toward the center line of the concave portion toward the bottom.

[0191] (14) In the battery package of (5) above, the frame portion may have a plurality of insertion openings opened to the upper side and the recessed portion side, and each insertion opening may be connected to the recessed step portion.

[0192] (15) In the battery package of (1) or (2), the receiving portion may be a plurality of stoppers located on the first surface, and the conductive metal plate may have a plurality of locking pieces on its peripheral edge as the locking portion, and the plurality of locking pieces are locked to the stoppers from below.

[0193] (16) In the battery package of (15) above, each stopper may be open to the side and the recessed portion.

[0194] (17) The battery module comprises: a battery package as described in any one of (1) to (16); and a battery housed in the recess of the battery package, wherein the lower electrode is electrically connected to the first electrode and the upper electrode is electrically connected to the conductive metal plate.

[0195] (18) In the battery module of (17), the battery may be an all-solid-state battery in which a negative electrode layer, an electrolyte layer, and a positive electrode layer are stacked.

[0196] (19) In the battery module of (17), the battery may be a coin-type battery.

[0197] The invention of the present disclosure is described above based on the drawings and embodiments. However, the invention of the present disclosure is not limited to the aforementioned embodiments. That is, the invention of the present disclosure can be variously modified within the scope shown in the present disclosure, and the embodiments obtained by appropriately combining the technical means respectively disclosed in different embodiments are also included in the technical scope of the invention of the present disclosure. That is, it should be noted that those skilled in the art can easily make various deformations or corrections based on the present disclosure. In addition, it should also be noted that these deformations or corrections are included in the scope of the present disclosure.

[0198] Description of Reference Numerals

[0199] 1. a battery package (a battery package according to the first embodiment);

[0200] 2 Insulating substrate;

[0201] 2a Side 1;

[0202] 2b Second side;

[0203] 2c side;

[0204] 21 recess;

[0205] 3 frame;

[0206] 31 insulation frame;

[0207] 31d concave step portion (receiving portion);

[0208] 31n first incision;

[0209] 31g guide;

[0210] 32 Frame-shaped metal film;

[0211] 33 metal frame;

[0212] 3C corner;

[0213] 4 a first external electrode;

[0214] 5 second external electrode;

[0215] 6 first electrode;

[0216] J1 first connection wiring;

[0217] 7 second electrode;

[0218] J2 second connection wiring;

[0219] 8 Conductive metal plate;

[0220] 81 Sheet metal body;

[0221] 82 connecting piece (connecting portion);

[0222] 82f bending part;

[0223] 83 a stopper sheet (stopper portion);

[0224] 9 cover body;

[0225] 100 battery module (battery module of the first embodiment);

[0226] 200 Batteries;

[0227] 210 below electrode;

[0228] 220 upper electrode;

[0229] 1A battery package (battery package according to the second embodiment);

[0230] 31C inner corner;

[0231] 31i Insertion port;

[0232] 100A battery module (battery module of the second embodiment);

[0233] 1B battery package (battery package according to the third embodiment);

[0234] 21d concave step portion;

[0235] 22 second incision;

[0236] 9B cover;

[0237] 100B battery module (battery module of the third embodiment);

[0238] 1C battery package (battery package according to the fourth embodiment);

[0239] 8C Conductive metal plate;

[0240] 81C Sheet metal body;

[0241] 82C connection;

[0242] 83C stopper;

[0243] 100C battery module (battery module of the fourth embodiment);

[0244] 1D battery package (battery package of the fifth embodiment);

[0245] 10 stopper (receiving part);

[0246] 100D battery module (battery module of the fifth embodiment);

[0247] J1 first connection wiring;

[0248] J2 second connection wiring.

Claims

1. A battery package, wherein: The battery packaging member comprises: An insulating substrate having a first surface, a second surface opposite to the first surface, and a recessed portion opened on the first surface and used to accommodate a battery; a frame portion surrounding the recessed portion on the first surface; a first external electrode, the first external electrode being located on the second surface; a second external electrode, the second external electrode being located on the second surface; a first electrode, the first electrode being located on a bottom surface of the recess and electrically connected to the first external electrode; a second electrode, which is located between the recessed portion and the frame portion on the surface of the insulating substrate when viewed from above the first surface, and is electrically connected to the second external electrode; a receiving portion, the receiving portion being located at the frame portion or the insulating substrate; a conductive metal plate, the conductive metal plate being located at the opening side of the recess, the conductive metal plate having a connecting portion and a locking portion, and using elastic force to press the battery toward the bottom side of the recess, the connecting portion being electrically connected to the second electrode from above, and the locking portion being locked to the receiving portion; as well as A cover body is electrically insulated from the conductive metal plate and closes the frame.

2. The battery package according to claim 1, wherein The frame portion includes an insulating frame body surrounding the recessed portion on the first surface, and the second electrode is located inside the insulating frame body.

3. The battery package according to claim 1 or 2, wherein: The receiving portion is a plurality of concave step portions or an annular concave step portion located on the inner side surface of the frame portion, and a portion of the peripheral edge portion of the conductive metal plate is locked to the concave step portion from below as the locking portion.

4. The battery package according to claim 1 or 2, wherein: The receiving portion is a plurality of concave step portions or an annular concave step portion located on the inner side surface of the concave portion, and a portion of the peripheral edge portion of the conductive metal plate is locked to the concave step portion from below as the locking portion.

5. The battery package according to claim 1 or 2, wherein: The receiving portion is a plurality of concave step portions or annular concave step portions located on the inner side surface of the frame portion, and the conductive metal plate has a plurality of locking pieces as the locking portion at its peripheral edge, and the plurality of locking pieces are locked to the concave step portions from below.

6. The battery package according to claim 1 or 2, wherein: The receiving portion is a plurality of concave step portions or annular concave step portions located on the inner side surface of the concave portion, and the conductive metal plate has a plurality of locking pieces as the locking portion at its peripheral edge, and the plurality of locking pieces are locked to the concave step portions from below.

7. The battery package according to any one of claims 1 to 6, wherein Before the cover closes the frame, the upper side of the connection portion is open.

8. The battery package according to any one of claims 1 to 6, wherein The insulating frame has a first cutout portion connected to the recessed portion on its upper surface, and the second electrode overlaps with the first cutout portion in a plan view.

9. The battery package according to any one of claims 1 to 8, wherein The connection portion extends toward a corner of the frame portion.

10. The battery package according to any one of claims 1 to 9, wherein The connecting portion has a bent portion that straddles an edge of the recessed portion.

11. The battery package according to any one of claims 1 to 10, wherein The top end side of the connecting portion is bent into an arc shape.

12. The battery package according to claim 5, wherein The frame portion has a plurality of second cutout portions on an upper side of the concave step portion, and a portion of each locking piece overlaps with the second cutout portion in a plan view.

13. The battery package according to claim 5, wherein: The frame portion includes a guide portion on an upper side of the concave step portion, and a cross-sectional shape of the guide portion is formed in a stepped or tapered shape so as to approach a center line of the concave portion downward.

14. The battery package according to claim 5, wherein: The frame portion has a plurality of insertion openings opened to the upper side and the recessed portion side, and each of the insertion openings is connected to the recessed step portion.

15. The battery package according to claim 1 or 2, wherein: The receiving portion is a plurality of stoppers located on the first surface, The conductive metal plate has a plurality of locking pieces as the locking portion at its peripheral edge, and the plurality of locking pieces are locked to the stopper from below.

16. The battery package according to claim 15, wherein Each stopper is open to the side and the recessed portion.

17. A battery module, wherein: The battery module comprises: The battery package according to any one of claims 1 to 16; and A battery is housed in the recessed portion of the battery package, wherein a lower electrode is electrically connected to the first electrode, and an upper electrode is electrically connected to the conductive metal plate.

18. The battery module according to claim 17, wherein: The battery is an all-solid battery formed by stacking a negative electrode layer, an electrolyte layer and a positive electrode layer.

19. The battery module according to claim 17, wherein: The battery is a coin-type battery.

Images