JP2014216155A - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
JP2014216155A
JP2014216155A JP2013091934A JP2013091934A JP2014216155A JP 2014216155 A JP2014216155 A JP 2014216155A JP 2013091934 A JP2013091934 A JP 2013091934A JP 2013091934 A JP2013091934 A JP 2013091934A JP 2014216155 A JP2014216155 A JP 2014216155A
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JP
Japan
Prior art keywords
case member
fitting
battery pack
exposed portion
portion
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Granted
Application number
JP2013091934A
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Japanese (ja)
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JP6111819B2 (en
Inventor
増田 弘朝
Hirotomo Masuda
弘朝 増田
Original Assignee
三洋電機株式会社
Sanyo Electric Co Ltd
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Publication date
Application filed by 三洋電機株式会社, Sanyo Electric Co Ltd filed Critical 三洋電機株式会社
Priority to JP2013091934A priority Critical patent/JP6111819B2/en
Publication of JP2014216155A publication Critical patent/JP2014216155A/en
Application granted granted Critical
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/10Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders

Abstract

A battery pack capable of ensuring a unified design when mounted on a portable electronic device without impairing the fitting force of an upper case member and a lower case member. A dish-shaped first case member and a second case member are configured by abutting the opening edges of the second case member, and a unit cell housed in the case. The battery pack has an exposed portion that is partly exposed to the outside of the device, and the first case member includes the exposed portion and a first fitting portion that is joined to the back surface of the exposed portion. And the 2nd case member has the 2nd fitting part mated with the 1st fitting part. [Selection] Figure 2

Description

  The present invention relates to a battery pack, and more particularly to a technique for making it difficult for a parting line to appear on the exterior of the battery pack.

  In recent years, battery packs have been widely used as power sources for portable electronic devices such as notebook PCs, mobile phones, transceivers, personal digital assistants (PDAs), and digital still cameras.

  As shown in FIG. 5, a conventional battery pack 901 includes a dish-shaped upper case member 902 and a lower case member 903, a plurality of unit cells 905 included in a case 904 constituted by these, and the unit cells. The lead plate 909 connects between the terminals 905.

  A part of the convex part 902 a of the upper case member 902 and a part of the convex part 903 a of the lower case member 903 protrude to the outside, and constitute a convex part 904 a of the case 904 in the battery pack 901.

  FIG. 6 is a schematic diagram when the portable electronic device 101 is viewed from the back side in a state where the conventional battery pack 901 is attached to the portable electronic device 101. The convex portion 904a of the case 904 is exposed to the outside together with the end surface of the battery pack 901 opposite to the portable electronic device 101 from the viewpoint of design and the like.

  FIG. 7A is a schematic diagram when the portable electronic device 101 is viewed from the side surface in a state where the conventional battery pack 901 is mounted on the portable electronic device 101. FIG. 7B is an enlarged view of part B. In the battery pack 901, a parting line 904b in which the upper case member 902 and the lower case member 903 are joined appears in the convex portion 904a.

JP 2009-224072 A

  Depending on the design of the portable electronic device and the construction method of the portable electronic device, the parting line does not appear on the portable electronic device, but the parting line appears only on the battery pack. That is, the design lacks a sense of unity when the battery pack is mounted on the portable electronic device. In order to hide the parting line of the battery pack, it is conceivable to form a decorative board on the battery pack. However, there is a problem that the decorative board breaks because the fitting force between the battery pack and the decorative board is insufficient. Occurs.

  The present invention has been made in view of the above problems, and it is possible to ensure a unified design in a state in which the upper case member and the lower case member are attached to a portable electronic device without impairing the fitting force of the upper case member and the lower case member. An object of the present invention is to provide a battery pack that can be used.

In order to solve the above problems, the present invention provides a case configured by abutting the opening edges of a dish-shaped first case member and a second case member, a unit cell housed in the case,
A battery pack having an exposed portion where a part of the case is exposed to the outside of the device when the device is mounted, wherein the first case member includes the exposed portion, and the exposed portion It has the 1st fitting part joined to the back, and it was set as the structure where the 2nd case member has the 2nd fitting part fitted with the 1st fitting part.

  Here, the first fitting portion is bonded to the back surface of the exposed portion, the rib extending in the opening edge direction from the bottom surface of the first case member, and the rib is bonded to the exposed portion. It has a parallel fitting board, The said 2nd fitting part can also be set as the structure inserted in the space formed with the said exposed part, the said rib, and the said fitting board.

  It may be configured to have n (n is an integer equal to or greater than 1) ribs bonded to the back surface of the exposed portion and divide the second fitting portion into n + 1 pieces.

  According to the battery pack of the present invention having the above configuration, first, the first fitting portion joined to the back surface of the exposed portion of the first case member in the case, and the second of the second case member. It fits in the fitting part. Thereby, the fitting force of the upper case member and the lower case member is not impaired, and a unified design with the battery pack mounted on the portable electronic device can be secured.

1 is an exploded perspective view of a battery pack 1 according to Embodiment 1 of the present invention. 1 is a schematic diagram showing a state in which a battery pack 1 according to Embodiment 1 of the present invention is attached to a portable electronic device 101. FIG. It is a perspective view of the convex part 2a of the upper case member 2 of the battery pack 1 which concerns on Embodiment 1 of this invention. It is a perspective view of the convex part 3a of the lower case member 3 of the battery pack 1 which concerns on Embodiment 1 of this invention. It is an expansion | deployment perspective view of the battery pack 901 which concerns on a prior art. FIG. 10 is a rear view illustrating a state in which a battery pack 901 according to a conventional technique is attached to a portable electronic device 101. FIG. 10 is a schematic diagram illustrating a state in which a battery pack 901 according to a conventional technique is attached to a portable electronic device 101.

DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
<Overall configuration of battery pack 1>
FIG. 1 is an exploded perspective view of the battery pack 1. As shown in FIG. 1, in the battery pack 1, a case 4 is configured by a dish-shaped resin upper case member 2 and a lower case member 3. The resin constituting the upper case member 2 and the lower case member 3 is a flame retardant resin made of a resin such as a polycarbonate resin, a polyamide resin, or an ABS resin, or a copolymer or alloy thereof. Inside the case 4, a total of nine cylindrical batteries 5 (hereinafter referred to as “unit cells 5”) in the X-axis direction and the Y-axis direction are connected between the terminals of these unit cells 5. A lead plate 9 (not shown) is accommodated. The wall thickness t2 of the upper case member 2 and the lower case member 3 is 0.8 mm.

  The lower case member 3 has a window portion on the front wall portion in FIG. 1, and a circuit board 6 is inserted between the window portion and the three frontmost unit cells 5. The circuit board 6 is mounted with a connector 7 for connection with the portable electronic device 101, and the connector 7 is exposed to the outside of the lower case member 3.

  The lower case member 3 has a convex portion 3a projecting from the rear (back side) opposite to the connector 7, and the upper case member 2 also has a convex portion 2a projecting from the rear in this portion.

  Then, when the case 4 of the battery pack 1 is formed by joining the upper case member 2 and the lower case member 3 with their opening edges butted together, the convex portion 4a of the case 4 faces outward in the Y-axis direction. Overhang. The Y-axis direction that is the protruding direction is a direction that intersects the X-axis direction that is the device mounting direction.

  Even when the convex portion 4a is attached to the portable electronic device 101, the convex portion 4a is exposed to the outside, so that the design of the portable electronic device 101 to which the battery pack 1 is attached is affected.

  Therefore, as shown in FIG. 1, in the battery pack 1 of the first embodiment, only the fitting portion is provided on the convex portion 2 a of the upper case member 2, and the exposed portion 3 c is provided on the convex portion 3 a of the lower case member 3. In addition, there is a configuration in which a fitting portion is provided on the back surface side of the exposed portion 3c and the inside of the case.

  FIG. 2A is a perspective view of the battery pack 1 in which the upper case member 2 and the lower case member 3 are fitted, as seen from the side of the battery pack 1. FIG. 2B is an enlarged view of part B.

  As shown in FIG. 2, since the parting lines are arranged at the corners between the top surface of the upper case member 2 and the convex portion 3a of the lower case member 3, the convex portion 4a of the case 4 The parting line in which the case member 2 and the lower case member 3 fit together is in a state that hardly appears.

<Convex part 2a>
Next, the convex part 2a of the upper case member 2 will be described. The convex portion 2a is integrally formed when the upper case member 2 is molded with a mold, and is connected to the top surface.

  FIG. 3 is a perspective view of the convex portion 2 a of the upper case member 2. The fitting part 2b divided into two slightly inside the convex part 4a of the case 4 is comprised. The fitting portion 2 b has substantially the same size as the convex portion 4 a of the case 4 in order to secure a fitting force with the lower case member 3.

<Convex 3a>
Next, the convex part 3a of the lower case member 3 will be described. The convex portion 3a is integrally formed when the lower case member 3 is molded with a mold, and is connected to the bottom surface.

  FIG. 4 is a perspective view of the convex portion 3 a of the lower case member 3. An exposed portion 3c that becomes the convex portion 4a of the case 4 is disposed, and further includes a fitting portion 3b joined to the back surface of the exposed portion 3c. The fitting portion 3b is joined to the back surface of the exposed portion 3c, a rib 3d extending from the bottom surface of the lower case member 3 toward the opening edge, and a fitting plate 3e joined to the rib 3d and parallel to the exposed portion 3c. Have.

<About the fitting of the fitting part 2b and the fitting part 3b>
The fitting of the fitting part 2b and the fitting part 3b will be described. The two fitting portions 2b of the upper case member 2 are inserted into two spaces formed by the exposed portion 3c, the rib 3d, and the fitting plate 3e of the lower case member 3, respectively. And the fitting part 2b and the fitting part 3b are fitted by the hook part of the front-end | tip of the fitting part 2b hanging on the fitting board 3e of the fitting part 3b.

  By fitting the fitting part 2b and the fitting part 3b, a sufficient fitting force for fitting the upper case member 2 and the lower case member 3 can be secured. Further, since the convex portion 4a of the case 4 is formed only by the exposed portion 3c of the lower case member 3, the parting line between the upper case member 2 and the lower case member 3 can be made difficult to see, and the battery pack 1 Can be ensured to have a unified design in a state in which the mobile electronic device 101 is mounted.

  In the present embodiment, the exposed portion 3c is provided in the lower case member 3, but the exposed portion may be provided in the upper case member. In that case, since a parting line is arranged at the corner between the bottom surface of the lower case member and the convex portion of the upper case member, when viewed from the upper surface of the portable electronic device 101 on which the battery pack 1 is mounted. In addition, the parting line can be made more difficult to see.

  In the present embodiment, the number of ribs 3d on the back surface of the exposed portion 3c of the lower case member 3 is one, and the fitting portion 2b of the upper case member 2 is divided into two. However, the number of ribs 3d is two or more. The fitting portion 2b may be divided into three or more. As the number of ribs 3d increases, the exposed portion 3c is connected at more places, so that the fitting force between the fitting portion 2b and the fitting portion 3b can be increased.

  In other words, n (n is an integer equal to or greater than 1) ribs 3d bonded to the back surface of the exposed portion 3c, and the fitting portion 2b is divided into n + 1 pieces so that the fitting portion 2b and the fitting portion 3b The mating power can be strengthened.

  The battery pack of the present invention can be used as a main power source for portable electronic devices such as notebook PCs, mobile phones, transceivers, personal digital assistants (PDAs), and digital still cameras.

DESCRIPTION OF SYMBOLS 1 Battery pack 2 Upper case member 2a Convex part 2b Fitting part 3 Lower case member 3a Convex part 3b Fitting part 3c Exposed part 3d Rib 3e Fitting board 4 Case 4a Convex part 5 Unit cell 6 Circuit board 7 Connector 101 Portable electronic machine

Claims (3)

  1. A case configured by abutting the opening edges of the dish-shaped first case member and the second case member;
    A unit cell housed in the case;
    With
    A battery pack having an exposed portion where a part of the case is exposed to the outside of the device when the device is mounted,
    The first case member includes a first fitting portion on which the exposed portion is disposed and further joined to the back surface of the exposed portion,
    The battery case according to claim 2, wherein the second case member has a second fitting portion that engages with the first fitting portion.
  2. The first fitting portion is
    A rib bonded to the back surface of the exposed portion and extending from the bottom surface of the first case member toward the opening edge;
    Bonded to the rib, and having a fitting plate parallel to the exposed portion,
    The battery pack according to claim 1, wherein the second fitting portion is inserted into a space formed by the exposed portion, the rib, and the fitting plate.
  3. N (n is an integer of 1 or more) ribs bonded to the back surface of the exposed portion;
    The battery pack according to claim 2, wherein the second fitting portion is divided into n + 1 pieces.
JP2013091934A 2013-04-25 2013-04-25 Battery pack Active JP6111819B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013091934A JP6111819B2 (en) 2013-04-25 2013-04-25 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013091934A JP6111819B2 (en) 2013-04-25 2013-04-25 Battery pack

Publications (2)

Publication Number Publication Date
JP2014216155A true JP2014216155A (en) 2014-11-17
JP6111819B2 JP6111819B2 (en) 2017-04-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013091934A Active JP6111819B2 (en) 2013-04-25 2013-04-25 Battery pack

Country Status (1)

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JP (1) JP6111819B2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003257388A (en) * 2002-03-05 2003-09-12 Sony Corp Secondary battery housing case
JP2004319314A (en) * 2003-04-17 2004-11-11 Matsushita Electric Ind Co Ltd Battery pack and method of manufacturing pack case used in this
JP2004327206A (en) * 2003-04-24 2004-11-18 Sanyo Electric Co Ltd Battery pack
JP2008140730A (en) * 2006-12-05 2008-06-19 Sanyo Electric Co Ltd Packed battery
JP2008218210A (en) * 2007-03-05 2008-09-18 Lenovo Singapore Pte Ltd Battery pack and portable electronic device
JP2009224072A (en) * 2008-03-13 2009-10-01 Sanyo Electric Co Ltd Pack battery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003257388A (en) * 2002-03-05 2003-09-12 Sony Corp Secondary battery housing case
JP2004319314A (en) * 2003-04-17 2004-11-11 Matsushita Electric Ind Co Ltd Battery pack and method of manufacturing pack case used in this
JP2004327206A (en) * 2003-04-24 2004-11-18 Sanyo Electric Co Ltd Battery pack
JP2008140730A (en) * 2006-12-05 2008-06-19 Sanyo Electric Co Ltd Packed battery
JP2008218210A (en) * 2007-03-05 2008-09-18 Lenovo Singapore Pte Ltd Battery pack and portable electronic device
JP2009224072A (en) * 2008-03-13 2009-10-01 Sanyo Electric Co Ltd Pack battery

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