Paper battery package and battery pack

Abstract

To prevent the occurrence of mold and suitably accommodate a battery with a simple and inexpensive structure.SOLUTION: A paper battery package contains a battery having a convex positive terminal on one end face of a cylindrical body, and includes a package body that contains the battery, and a spacer portion that is disposed within the package body between the one end face and an inner face of the package body that faces the one end face and that inhibits contact between the positive terminal and the package body.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a paper battery package and a battery pack containing a battery therein. [Background technology]

[0002] Conventionally, cylindrical batteries such as lithium ion batteries, nickel metal hydride batteries, and alkaline batteries (hereinafter referred to as "batteries") are manufactured in a factory and shipped in a battery storage package containing multiple batteries. Commonly known battery storage packages include a shrink pack 1 in which a battery 2 is packaged using a plastic film 3 as shown in Fig. 1, and a blister pack in which a blister cup made of a transparent synthetic resin sheet is attached to a paper blister mount. Figs. 1A, 1B, and 1C are respectively a plan view, a top view, and a bottom view showing an example of a conventional battery pack.

[0003] However, shrink packs 1 are often discarded after opening, and are not environmentally friendly in light of recent environmental issues such as resource recycling and waste reduction. In addition, although shrink packs can be considered as recyclable resources, they are difficult to separate because a paper label with the product name and other information printed on it is affixed to the plastic film packaging.

[0004] Furthermore, although blister packs are sometimes reused as recycled resources, they must be separated into a paper backing and a synthetic resin blister cup. If the two are glued together, there is a problem that the surface of the backing adheres to the blister cup when the pack is opened, making the separation itself difficult.

[0005] In light of these circumstances, paper battery packages that use paper as the packaging material, as shown in Patent Documents 1 and 2, for example, have been attracting attention as environmentally friendly battery packages. Paper battery packaging is easy to recycle because it is made from a single material. Using recycled paper reduces material costs and also promotes ethical consumption (consumption behavior that takes into consideration solving environmental issues).

[0006] However, in paper battery packages, when the paper material absorbs moisture and comes into contact with the electrode terminals of the battery, especially the positive terminal, rust may occur on the electrode terminals. In order to prevent such rust from occurring on the electrode terminals, in Patent Document 1, the paper battery package is shaped so that mountain-shaped spaces are formed above and below the electrode terminals of the battery inside, so that the case and the electrode terminals are not in contact with each other. In addition, in the paper battery package of Patent Document 2, the package is shaped so that oblique spaces are formed above and below the electrode terminals of the battery, so that the case and the electrode terminals are not in contact with each other. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 6868446 [Patent Document 2] JP 2001-240049 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, the structure of the cited document 1 is complicated, and in the cited document 2, there is a possibility that the electrode terminals may come into contact with the case due to the misalignment of the battery. For this reason, it is desirable to have a simple structure that reliably prevents contact between the electrode terminals, particularly the protrusions, and the paper case to prevent the growth of mold.

[0009] The present invention has been made in consideration of the above-mentioned points, and has an object to provide a paper battery package and a battery pack that have a simple and inexpensive structure, prevent mold growth, and properly accommodate batteries. [Means for solving the problem]

[0010] One aspect of the paper battery package according to the present invention is as follows: A paper battery package that houses a battery having a protruding positive terminal on one end surface of a columnar body, A package body that houses the battery; The package body has a spacer portion disposed between the one end face and an inner face of the package body opposing the one end face, the spacer portion preventing contact between the positive electrode terminal and the package body.

[0011] One aspect of the battery pack according to the present invention is A paper battery package having the above configuration; a battery having a protruding positive electrode terminal on one end surface and housed in the paper battery package; having Within the paper battery package, the spacer portion is interposed between the one end face and a portion of the package body opposite the one end face, and is configured to prevent contact of the positive terminal with the portion of the package body. Effect of the Invention

[0012] According to the present invention, it is possible to prevent the growth of mold and to house batteries in a suitable manner using a simple and inexpensive structure. [Brief description of the drawings]

[0013] [Figure 1] 1A, 1B, and 1C are diagrams showing an example of a conventional battery pack. [Diagram 2] FIG. 2 is an external perspective view of the battery pack according to the first embodiment of the present invention. [Diagram 3] FIG. 3 is a partial cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is a perspective view showing a state in which the spacer portion is removed from the package body. [Diagram 5] FIG. 5 is a diagram showing a state in which a battery is housed in a package body. [Figure 6] FIG. 6 is an external perspective view of a battery pack according to the second embodiment of the present invention. [Figure 7] FIG. 7 is a partial cross-sectional view taken along line BB in FIG. [Figure 8] 8A, 8B, and 8C are diagrams showing the state in which a battery is accommodated in a battery pack. [Figure 9] FIG. 9 is a development view showing a modified example of the battery pack. [Figure 10] FIG. 10 is a plan view of a modified example of the battery pack shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that common components in the various drawings are given the same reference numerals, and descriptions thereof will be omitted as appropriate.

[0015] (Embodiment 1) FIG. 2 is an external perspective view of the battery pack according to embodiment 1 of the present invention, FIG. 3 is a partial cross-sectional view taken along line AA in FIG. 2, and FIG. 4 is a perspective view showing the state in which the spacer portion has been removed from the package body.

[0016] The battery pack is configured by housing a battery 2 in a paper battery package 10, and may also be referred to as a package containing a battery. The paper battery package 10 has a package body 30 that houses the battery 2, and a spacer portion 40 that is disposed within the package body 30. The paper battery package 10 houses the battery 2 such that the positive terminal of the battery 2 does not come into contact with the package body 30 and the spacer portion 40. The package body 30 and the spacer portion 40 are separate bodies, and the spacer portion is detachable from the package body, but may be provided integrally.

[0017] The package body 30 shown in FIG. 2 is formed by folding a sheet of paper into a box shape, and has an opening 30a that opens on one side, and a lid 31 that can freely open and close the opening 30a.

[0018] The package body 30 is made of a simple and inexpensive paper material without a shrink film. The package body 30 may be made of a water-absorbent sheet material, but it is preferable that the package body 30 is made of paper as a material that takes into consideration sustainability and environmental conservation without using a shrink film.

[0019] The paper battery package 10 is configured to house multiple batteries 2 (four in the figure), but is not limited to this, and may house one battery 2 or five or more batteries 2.

[0020] The accommodated battery 2 is a battery having a columnar battery body 22 and a protruding positive terminal 24 on one end surface 22a of the battery body 22. The battery 2 is, for example, a cylindrical battery such as a lithium ion battery, a nickel-metal hydride battery, or an alkaline battery, and has a positive terminal on one end surface 22a of the cylindrical battery body 22 of the battery 2 and a negative terminal on the other end surface 22b.

[0021] The battery 2 is a nickel-metal hydride battery, and only the convex portion on one end surface 22a of the battery body 22 is the positive electrode terminal 24, and the other end surface 22a on the opposite side constitutes the negative electrode terminal over its entirety. The battery 2 is prone to rust when it comes into contact with a moisture-containing, water-absorbent material. In particular, in cylindrical batteries, it is known that the positive electrode terminal is prone to rust when it comes into contact with a moisture-containing material (e.g., paper). On the other hand, the negative electrode terminal is less likely to rust even when it comes into contact with a moisture-containing material.

[0022] The spacer portion 40 is formed by folding paper (cardboard) which is a water-absorbent material. The spacer portion 40 has a central surface portion 42 facing the one end face 22a, and a pair of side wall portions (corresponding to the intervening surface portion 46). At least one of the side wall portions functions as the intervening surface portion 46. The spacer portion 40 is interposed between the one end face 22a and a portion (one inner surface 32) of the package body 30 facing the one end face 22a.

[0023] The intervening surface portions 46 maintain a space between the positive terminal 24, which is the positive terminal of the battery 2, and the package body 30 within the package body 30. A pair of intervening surface portions 46 are provided to sandwich the positive terminal 24 therebetween.

[0024] The central surface portion 42 has an opening 44 in the center, and the positive terminal 24 is inserted through the opening 44 so as to be opposed to and in contact with the one end surface 22a, thereby positioning the battery 2 at the one end surface 22a.

[0025] The central surface portion 42 has a plurality of band-shaped openings 44 aligned along the longitudinal direction, and is formed to separate the plurality of batteries 2 at each of the end faces 22a. The intervening surfaces 46 are disposed perpendicular to both side portions extending in the longitudinal direction of the central surface portion 42, and extend along the longitudinal direction of the central surface portion. As shown in Figure 5, the central surface portion 42 is configured so that the longitudinal length of the paper battery package 10 is long enough to accommodate four batteries 2.

[0026] The opening 44 of the central surface portion 42 is preferably located at a position that does not contact the positive electrode terminal 24 that is inserted therethrough when the battery 2 is housed therein.

[0027] The intervening surface portion 46 is disposed in parallel with the positive terminal 24, which is a positive terminal, and is interposed between one end face 22a of the battery 2 and one inner face 32 of the package body 30. The intervening surface portion 46 has a length that separates the tip of the positive terminal 24 from the one inner face 42. The intervening surface portion 46 is preferably configured so that one side portion abuts against the one end face 22a via the central surface portion 42, and the other side portion abuts against the one inner face 32.

[0028] The intervening surface portion 46 is disposed between one end face 22a of the battery 2 and one inner surface 32 of the package body 30 facing the one end face 22a. The intervening surface portion 46 holds the positive terminal 24 positioned in the space between the central surface portion 42 and the one inner surface 32 with the tip of the positive terminal 24 spaced apart from the one inner surface 32.

[0029] FIG. 5 is a diagram showing a state in which a battery is housed in a package body. When the battery 2 is housed in the paper battery package 10, as shown in FIG. 4, the spacer portion 40 is attached to the battery 2 by inserting the positive terminal 24 of the battery 2 into the opening 44 and abutting the central surface portion 42 against the one end surface 22a. The battery 2 with the spacer portion 40 attached is inserted into the package body 30 through the opening 30a of the package body 30. As a result, the movement of the other end surface 22b and the circumferential surface of the battery 2 is restricted by the inner surface of the package body 30. In addition, the movement of the one end surface 22a of the battery 2 toward the one end surface 22a is restricted by the spacer portion 40 (the central surface portion 42 and the intervening surface portion 46) so that the positive terminal 24 does not abut against the package body 30 (particularly the one inner surface 32) through the opening 44.

[0030] As a result, when the paper battery package 10 houses the battery 2, the positive terminal 24, which is the positive electrode of the battery 2, does not come into contact with the water-absorbent package body 30 or the spacer portion 40. Therefore, the paper battery package 10 can suitably store the battery 2 without causing rust.

[0031] Thus, according to this embodiment, in a paper battery package using versatile paper, the battery can be insulated without using resin products by simply using the paper spacer portion 40 with a simple structure. This makes it possible to suitably house the battery while preventing the growth of mold and rust with a simple and inexpensive structure.

[0032] (Embodiment 2) FIG. 6 is an external perspective view of a battery pack according to a second embodiment of the present invention, and FIG. 7 is a partial cross-sectional view taken along line BB in FIG.

[0033] The battery pack shown in FIG. 6 accommodates, within a package body 30, a battery 2 and a spacer section 50 arranged to surround the positive terminal 24, which is the positive terminal of the battery 2.

[0034] The spacer portion 50 prevents the absorbent paper package body 30 from coming into contact with the positive terminal 24. The spacer portion 50 is formed in a U-shaped cross section, and is disposed so as to cover the positive terminal 24 of the battery 2.

[0035] The spacer portion 50 is formed, for example, by bending paper, which is a water-absorbent material, such as cardboard. The spacer portion 50 has intervening surfaces (both side surfaces of the spacer portion 50) 52 arranged parallel to the protruding direction of the positive electrode terminal 24, and a central surface 52 formed into a U-shape by connecting one end of the intervening surfaces 56 to each other. The spacer portion 50 can be easily manufactured by simply bending both sides of the central surface of the paper so as to be perpendicular to each other.

[0036] The intervening surface portions 56, which are both side portions of the spacer portion 50, have a length that separates the tip of the positive terminal 24 from the one inner surface 42. The intervening surface portions 56 have one end portion positioned in contact with or close to the one inner surface 32 within the package body 30, and the other end portion positioned in contact with or close to the one end surface 22a of the battery 2. As a result, the positive terminal 24 is accommodated within the package body 30 without contacting the package body 30.

[0037] 8A, 8B, and 8C are diagrams showing the state in which a battery is accommodated in a battery pack. When the battery 2 is housed in the package body 30, as shown in Fig. 8A, the positive terminal 24 of the battery 2 is inserted and set in a recess in the spacer part 50 formed by the intermediate surface parts 56, which are both side surfaces, and the central surface part 52. This is repeated to set multiple batteries 2 on the spacer part 50 (see Fig. 8B), and the multiple batteries 2 are arranged side by side with their positive terminals 24 inserted in the recesses of the spacer part 50. These are then inserted into the package body 30 from one of the openings. The opening is then closed with the lid part 31, thereby restricting the axial movement of the battery 2 within the package body 30 as well as the circumferential movement.

[0038] The positive electrode terminal 24 is disposed within the package body 30 in a state in which contact between the package body 30 and the spacer portion 50 is prevented by the spacer portion 50 6 .

[0039] In this embodiment, as long as multiple positive terminals 24 are arranged inside the longitudinally extending recessed portion in the spacer portion 50, when the battery 2 is accommodated in the package body 30, the positive terminals 24 will be arranged without abutting any part of the package body. In particular, since the spacer portion 50 can be constructed of thick paper folded into a U-shape, by simply using the spacer portion 40 which is made of paper and has a simple structure, the contained batteries can be suitably insulated in a paper battery package made of versatile paper without using resin products.

[0040] This makes it possible to hold multiple batteries 2 inside the package body 30 in a rust-resistant state with a simple structure and simple operations.

[0041] Although the spacer portion disposed within the package body 30 is configured as a separate body from the package body, this is not limited thereto, and the spacer portion may be configured in any manner that prevents the positive terminal 24 of the battery 2 from contacting the package body within the package body.

[0042] (Modification) Fig. 9 is a development view showing a modified battery pack, and Fig. 10 is a plan view of the modified battery pack shown in Fig. 9. Note that Fig. 10 shows the second surface, which is the top surface, in a see-through state. The paper battery package 10 shown in Fig. 10 is configured such that a package body 30 and a spacer portion 60 are integrated into a single sheet 100 (see Fig. 9). The sheet 100 is folded at predetermined locations and assembled into a box shape to form a package body 30B with a spacer portion 60 as the paper battery package 10B.

[0043] Specifically, as shown in FIG. 9, the sheet 100 integrally includes a package body forming portion 130 constituting the package body 30B and a spacer forming portion 160 constituting the spacer portion, and is formed as a single sheet of paper.

[0044] The package body forming part 130 has a rectangular first surface 132 which is one of the upper and lower surfaces, and a second surface 133. A lid 131 having an insertion tongue portion 131a and a folded portion 137a are formed continuously on a pair of opposing sides of the first surface 132. A left side surface 134 and an overlapping portion 135a are formed continuously extending on the other pair of sides adjacent to one side of the first surface 132 perpendicularly. The left side surface 134 is formed continuously on one of the pair of opposing sides of the second surface 133, and the right side surface 135 is formed continuously on the other of the pair of sides. On one side of the other pair of sides adjacent to the pair of sides perpendicularly, an intermediate surface portion 166, a central forming portion 162 which is a central surface portion having a portion 164 which is an opening, and an intermediate surface portion 166 are formed continuously extending in this order. In second surface 135, a folded surface 137c that constitutes a back surface facing lid 131 is formed continuously to the other side of the other pair of side portions. Note that second surface 133 is formed with a portion 167 that serves as a notch into which tongue portion 131a is inserted.

[0045] Each surface is folded to form a box shape, such as by folding in the folded surfaces 137a to 137d to form a back surface. The central forming portion 162 is formed to be located at a position opposite the back surface, and the central forming portion 162 is disposed opposite and spaced apart from the lid 131 by a pair of intervening surfaces 166.

[0046] The opening portion 164 of the central forming portion 162 is removed, the positive terminal 24 is inserted into the opening, and the spacer portion 60 is attached so as to cover one end of the battery 2, thereby forming a battery pack capable of housing the battery 2.

[0047] With this configuration, by simply folding and assembling a single sheet of absorbent paper appropriately, a spacer portion can be formed within the package body, making it easy to manufacture an inexpensive, rust-resistant paper battery package via the spacer portion.

[0048] The position of the spacer forming portion relative to the package body forming portion may be anywhere as long as it prevents the positive terminal 24 of the battery inside the package body from coming into contact with other components when the paper is folded to assemble the package body and the spacer portion.

[0049] The above describes the embodiment of the present invention. Note that the above description is an example of a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. In other words, the description of the configuration of the above device and the shape of each part are examples, and it is clear that various modifications and additions to these examples are possible within the scope of the present invention. [Industrial Applicability]

[0050] The paper battery package of the present invention can be housed within the package body without the paper coming into contact with the positive terminal 24, which has the effect of making it into a battery pack that is inexpensive, rust-resistant, and can be conveniently stored, making it a useful paper battery package. [Explanation of symbols]

[0051] 1 Shrink wrap 2 batteries 3. Plastic film 10, 10B Paper Battery Package 22 Battery body 22a One end face 22b Other end surface 24 Positive terminal 30, 30B package body 30a opening 31 Lid 32 Inside 40, 50, 60 Spacer part 42, 52 Center section 44 Opening 46, 56 Intervening surface section (connection surface section) 100 sheets 130 Package body forming section 131 Lid 131a Tongue 132 Page 1 133 2nd page 134 Left side 135 Right side 135a Glue section 137a, 137b, 137c, 137d Folding surface 160 Spacer forming section 162 Central section 164 parts 166 Intervening surface part 167 parts 1371 Folding part 1661 Intervening surface part U cross section

Claims

1. A paper battery package that houses a battery having a protruding positive terminal on one end surface of a columnar body, A package body that houses the battery; a spacer portion disposed in the package body between the one end face and an inner surface of the package body facing the one end face, the spacer portion inhibiting contact between the positive electrode terminal and the package body; Paper battery packaging.

2. the spacer portion is integrally formed with the package body, The paper battery package according to claim 1.

3. The spacer portion is provided so as to be detachable from the package body. The paper battery package according to claim 1.

4. The spacer portion has an interposition surface portion interposed between the one end surface and the one inner surface and having a length that separates the tip of the positive electrode terminal from the one inner surface. The paper battery package according to claim 1.

5. The spacer portion includes a pair of surface portions arranged in contact with the one end surface so as to sandwich the positive electrode terminal therebetween; a connection surface portion that connects the pair of walls and is disposed opposite the positive electrode terminal; having The paper battery package according to claim 1.

6. the positive electrode terminal is inserted into an opening, and the positive electrode terminal is protruding from the opening. The positive electrode terminal is disposed on the one end surface. The surface portion is connected to the intermediate surface portion and restricts axial movement of the battery. The paper battery package according to claim 4.

7. A paper battery package according to any one of claims 1 to 6, a battery having a protruding positive electrode terminal on one end surface and housed in the paper battery package; having In the paper battery package, the spacer portion is interposed between the one end surface and a portion of the package body facing the one end surface, and prevents the positive electrode terminal from contacting the portion of the package body. Battery pack.

Images