JP3339319B2 - Battery pack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack in which a battery is housed in a synthetic resin case used as a power source for a mobile communication device, a small OA device, and the like.

[0002]

2. Description of the Related Art In recent years, with the spread of mobile phones and the miniaturization of OA equipment, the demand for this type of battery pack as a power source used for them has increased.

Conventionally, these battery packs have external output terminals for connection with equipment to be used which are partially exposed on the outer surface thereof. For example, an outer case as shown in Japanese Utility Model Publication No. 4-1637 is divided into two cases,
The terminal fitting for connecting one end to the battery housed in this case is hook-shaped, is exposed to the outside through a cutout formed in the end face of one case, and is extended along the end face to the side face of this one case. There is known a terminal mounting structure in which a notch is engaged with a through hole formed in a side surface of one case, and a protruding piece is provided in the other case so as to fit into the notch, and a terminal fitting is pressed by the protruding piece. ing.

[0004]

However, in such a conventional terminal mounting structure, since a hook-shaped terminal is used, the fixing to the front, rear, left and right can be defined by a concave portion or a groove provided in a case. There is a problem in that there is no constraint in the vertical direction, so that a lift occurs and it is difficult to make contact with the used equipment. Also, in order to attach the hook-shaped terminals, it is necessary to provide a recess or groove in a part of the case forming the battery pack, and there is also a dimensional restriction that the dimension in the thickness direction of the battery pack becomes larger by that amount. Was.

The present invention solves the above-mentioned conventional problems, and has a structure in which a part of an external output terminal is exposed from a window provided on one end surface of a case, and the external output terminal is attached to the case. In this case as well, the terminal can be easily attached, and it is possible to surely suppress the lifting and the like.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention divides a synthetic resin case into two parts, and requires two batteries or one battery to be accommodated in the case. The accessories are housed in one case provided with a support plate that protrudes inward, and the external output terminals are placed on the support plate, and two batteries or external output is applied to the terminals of the battery and accessories. Connect one end of the terminal. The other case having a pair of windows for exposing a part of the external output terminal is fitted to one case, and the external output terminal is sandwiched from above and below between the end surface and the support plate of the other case. In this way.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a pack case made of a two-piece synthetic resin, one battery housed in the case, and accessories required by the case. Alternatively, two or more batteries, a lead piece for connecting the battery and the accessory or between the batteries in series, and a pair of plate-like external output terminals each having one end connected to a terminal of the battery and a terminal of the accessory. The other end of the pair of plate-shaped external output terminals is partially exposed to the outside from a pair of windows provided on a top plate of one of the case pieces constituting the pack case. When the lower case piece is integrally provided on the other case piece and supported on the lower side by a support plate portion projecting inward and the two case pieces are integrally fixed to form a case, the top plate Battery pack sandwiched between the top and bottom of the unit and the support plate There, thereby, is easy to mount the external output terminals in the case, the locking pin is reliably performed, moreover floating or the like can be reliably suppressed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an exploded perspective view of a battery pack according to the present invention. In FIG. 1, reference numerals 1 and 2 denote two-piece case pieces made of thermoplastic synthetic resin forming a case for a pack, and an upper end of one of the case pieces 1 has a support plate projecting inward. 3, and a top plate 6 having a pair of windows 4 and 5 at the upper end of the other case piece 2. A lead terminal 9 is connected to one end of the battery 7 and one end of the accessory 8, and is housed in one case piece 1. And the external output terminal 1
0 and 11 are bent portions 12 and 13 and welded portions 14 and 15
The bent portions 12 and 13 are placed on the case plate 1 along the support plate portion 3 of the case piece 1 and the welded portions 14 and 1 are formed.
5 is spot-welded to the battery 7 and the accessory 8, respectively.

Therefore, the external output terminals 10, 11
Are the support plate 3 of one case piece 1 and the other case piece 2
The case pieces 1 and 2 are fitted between the top plate part 6 from below and from above, and a part of the bent parts 12 and 13 are exposed from the windows 4 and 5 of the case piece 2. Then, the fitting portion is ultrasonically welded, and the case pieces 1 and 2 are integrated to form a battery pack as shown in FIG.

As described above, the battery pack of the present invention can be easily locked at a predetermined position simply by placing the external output terminals 10 and 11 on the support plate portion 3 of the case piece 1 and also has mutual electrical insulation. Can be secured. Further, the external output terminals 10, 11
Are sandwiched from above and below by the support plate part 3 of the case piece 1 and the top plate part 6 of the other case piece 2, so that the terminals 10,
11 can also be suppressed well.

The support plate portion 3 provided integrally with the one case piece 1 has a shape shown in FIG. 1 and a pair of external output terminals 10 and 11 as shown in FIG. It may be divided into two. In this case, the external output terminal 1
It is preferable that protrusions (ribs) 16 and 17 for stoppers are integrally formed upward at positions corresponding to the distal ends of the bent portions 12 and 13 of 0 and 11, respectively. By these ridges 16, 17,
The movement of the external output terminals 10 and 11 is stopped, and the electrical insulation between the external output terminals 10 and 11 can be more reliably performed.

Furthermore, as another example, the other case piece 2
On the lower surface of the top plate part 6, the position where the connection part of the external output terminals 10, 11 to the battery 7 or the accessory 8 is pressed down from above when integrated with one case piece 1 as shown in FIG. It is preferable to provide regulating plates 18 and 19. With such a shape, the external output terminals 10 and 11 can be more strongly fixed from above, and the connection portion between the external output terminals 10 and 11 and the battery 7 does not come off even when subjected to external vibration or impact. A battery pack having excellent vibration resistance can be provided.

In the above example, a configuration in which one battery and its accessories are stored has been described. However, two batteries 7, 7 can be stored. Further, as shown in FIG. 5, the same effect can be obtained by a configuration in which two batteries 7, 7 and one accessory 8 are stored in a case.

[0015]

As described above, in the battery pack of the present invention, the synthetic resin case is divided into two parts, and the battery housed in the case is provided with an external output terminal on a support plate provided on one of the case pieces. In this state, connect one end of the terminal to the terminal of the battery and accessories. Then, the other case piece formed with a pair of windows formed on the end face exposing a part of the external output terminal is fitted to one case piece, and the end face and the support plate sandwich the external output terminal from above and below, In addition, by fitting and integrating the external output terminals so that part of the external output terminals are exposed from the window, the external output terminals can be securely placed in place by a simple procedure of placing the external output terminals on the support plate of one of the case pieces. And electrical insulation from each other can be maintained. Further, since the external output terminal is sandwiched between the support plate portion and the top plate portion of the case piece, it is possible to sufficiently suppress the floating of the external output terminal and to securely fix the terminal portion.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention.

FIG. 2 is a perspective view of the battery pack.

FIG. 3 is a perspective view of one case piece of the battery pack of the present invention.

FIG. 4 is a perspective view of the other case of the battery pack of the present invention.

FIG. 5 is an exploded perspective view of a battery pack according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 One case piece 2 The other case piece 3 Support plate part 4 Window part 5 Window part 6 Top plate part 7 Battery 8 Accessories 9 Lead terminal 10 External output terminal 11 External output terminal 12 Bending part 13 Bending part 14 Welding part 15 Welded part 16 Protrusion (rib) 17 Protrusion (rib) 18 Position regulating plate 19 Position regulating plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-24548 (JP, A) JP-A-4-1637 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01M 2/10

Claims (3)

(57) [Claims] 1. A pack case made of two-piece synthetic resin, one battery housed in the case and accessories required by the case or two or more batteries, and the battery and accessories And a pair of plate-like external output terminals each having one end connected to the terminal of the battery and the terminal of the accessory or to the terminal of the two batteries, respectively. The other ends of the pair of plate-shaped external output terminals are partially exposed to the outside from a pair of windows provided on a top plate portion of one of the case pieces constituting the pack case, and the other is provided. The lower part is supported by a support plate part provided integrally with the case piece and projecting inward, and when the two case pieces are integrally fixed to form a case, the top plate part and the support are supported. Battery pack sandwiched between the top and bottom. 2. A support plate portion provided integrally with one of the case pieces is divided into two so as to separately support a pair of external output terminals, and is provided at a position corresponding to a tip end of the external output terminals. 2. The battery pack according to claim 1, wherein a ridge for a stopper is integrally formed upward. 3. A top plate portion of one case piece is provided with a position regulating plate for holding down a connection portion of an external output terminal to a battery or an accessory from above when integrated with the other case piece. The battery pack according to claim 1.