JPH0623158U - Battery pack - Google Patents

Abstract

(57) [Abstract] [Purpose] To increase the capacity of battery packs used for camera power supplies. [Structure] Two unit cells 16 and 17 are arranged in parallel and connected in series by a conductive connecting plate 19 to form a power generating element 15. The power generating element 15 is housed in the frame body 6 in which a pair of substantially I-shaped resin frames 2 and 3 are welded to each other to form the battery pack 1. At this time, a partition wall 5 is provided on the column 2a of one resin frame 2, and the power generation element 15 is bonded and fixed to this partition wall 5 to be integrated. The tack seal label 20 is attached so as to cover the unit cells 16 and 17 and the support 2a of the resin frame 2 from the outside. [Effect] The unit cells 16 and 17 have excellent impact resistance.
The short circuit of can be prevented. In addition, the degree of freedom in designing the tack seal label 20, which influences the appearance of the battery pack 1, is large.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a battery pack used for a power source for a camera or the like and capable of taking out an electric current from a pair of terminals exposed on the upper surface.

[0002]

[Prior art]

 As a battery pack of this type, one in which two power generating elements in which two unit cells arranged in parallel are connected in series by a conductive connecting plate are housed in a resin case that has been divided into two has been widely used. It was However, in this case, since the unit cell is housed in the resin case, the capacity of the battery pack is inevitably reduced by the thick portion of the resin case.

Therefore, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2-90460, after the power generation element is integrally covered with a tack seal label, it is sandwiched and fixed by a pair of resin frames having a substantially I-shaped cross section. Has proposed a method for increasing the capacity of the battery pack.

[0004]

[Problems to be solved by the device]

 However, in this case, there is a possibility that the unit cell may be short-circuited when the battery pack is impacted because most of the outer peripheral surface of the unit cell covered with the tack seal label is exposed. That is, the unit cell is covered with an insulating tube, but the insulating tube is very thin (usually about 0.05 to 0.1 mm), and when the outer peripheral surfaces of the unit cell contact each other, There is a high risk that the insulating tube may be damaged and short-circuit the unit cell.

In view of the above circumstances, it is an object of the present invention to provide a battery pack that can have a high capacity and can reliably prevent a short circuit of the unit cell.

[0006]

[Means for Solving the Problems]

 That is, the present invention has a frame body (6) in which a pair of substantially I-shaped resin frames (2, 3) are welded to each other, and two unit cells (16, 17) arranged side by side are made conductive. The power generation elements (15) connected in series by the connecting plate (19) of the above are housed in the frame body, and two terminals (12, 13) are provided in one resin frame (3) of the pair of resin frames. In the battery pack (1) in which one end of each of the terminals is connected to both ends of the power generation element, a partition wall (5) is provided on a column (2a) of one resin frame (2) of the pair of resin frames. , The power generating element is adhered in such a manner that the partition walls are sandwiched between the respective unit cells, and is fixed and integrated with the resin frame provided with the partition walls. The tack seal label (20) is attached so as to cover the support column.

Further, of the pair of resin frames (2, 3), the columns (3a) of the resin frame (3) to which the power generating element is not fixed press the both ends in the winding direction of the tack seal label (20) from above. It is then fixed and configured.

The numbers in parentheses are for convenience of showing corresponding elements in the drawings, and the present invention is not limited to the description in the drawings. The same applies to the "Claims for utility model registration" and "Action" columns.

[0009]

[Action]

 With the above structure, the present invention operates so that the partition walls (5) interposed between the two unit cells (16, 17) prevent the outer peripheral surfaces of these unit cells from contacting each other.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an assembled perspective view showing an embodiment of a battery pack according to the present invention, FIG. 2 is a cross-sectional view showing an embodiment of a battery pack according to the present invention, and FIG. 3 is an embodiment of a battery pack according to the present invention. It is a figure which shows an example, (A) is a front view, (B) is a rear view.

As shown in FIG. 1, the battery pack 1 according to the present invention has a frame body 6 in which a pair of substantially I-shaped resin frames 2 and 3 are welded to each other. A circular hole 7 is formed. A lid 9 is fitted in the hole 7, and the support 2a of one resin frame 2 constituting the frame 6 has a vertically long partition wall 5 as shown in FIGS. 1 and 2. The frame 3 is provided so as to project toward the column 3 a. Two terminal fitting recesses 10 and 11 are formed on the upper surface of the resin frame 3. The terminal fitting recesses 10 and 11 have plate terminals 12 and 13, respectively, as shown in FIG. 3 (A). It is fitted.

A power generation element 15 is housed in the frame body 6 in a form of being bonded and fixed to the partition wall 5, and the power generation element 15 includes two unit cells 16 and 17 and a conductive connecting plate 19. It is configured. That is, as shown in FIG. 1, the two unit cells 16 and 17 are arranged side by side in the positive and negative directions, and the lower ends of these unit cells 16 and 17 are connected in series by a conductive connecting plate 19. ing. Further, around the unit cells 16 and 17, as shown in FIGS. 2 and 3B, the tack seal label 20 covers the two unit cells 16 and 17 and the column 2a of the resin frame 2. Both ends of the tack seal label 20 in the winding direction (horizontal direction) are fixed by being pressed from above by the support columns 3a of the resin frame 3 over the entire length in the vertical direction thereof. .

Since the battery pack 1 according to the present invention has the above-described structure, when assembling the battery pack 1, the following procedure is performed. That is, first, two unit cells 16 and 17 are arranged side by side in opposite directions, and a conductive connecting plate 19 is welded to connect the unit cells 16 and 17 in series. At this time, a predetermined gap (that is, a gap corresponding to the thickness of the partition wall 5) is provided between the two unit cells 16 and 17.

In this way, when the two unit cells 16 and 17 are connected in series by the connecting plate 19, they are fitted and fixed in the resin frame 2. To this end, an adhesive is applied to both sides of the partition wall 5 protruding from the column 2a of the resin frame 2 so that the unit cells 16 and 17 are located on both sides of the partition wall 5 as shown in FIG. Bond the two unit cells 16 and 17 with the partition wall 5 sandwiched therebetween.

Next, a tack seal label 20 of a predetermined size is attached so as to cover the unit cells 16 and 17 and the column 2 a of the resin frame 2. At this time, since the resin frame 2 and the unit cells 16 and 17 are fixed to each other and integrated, the workability of attaching the tack seal label 20 is good.

In this way, when the tack seal label 20 is attached, the resin frame 3 is ultrasonically welded to the resin frame 2. Then, both ends of the tack seal label 20 in the winding direction are fixed by being pressed from above by the columns 3a of the resin frame 3 over the entire length in the vertical direction.

After that, the two plate terminals 12 and 13 are inserted into the terminal fitting recesses 10 and 11 of the resin frame 3, and one ends of these plate terminals 12 and 13 are welded to the unit cells 16 and 17, respectively.

Finally, the lid 9 is fitted into the hole 7 of the frame body 6 (that is, the resin frame 2 and the resin frame 3) and ultrasonic welding is performed. At this point, the assembly work of the battery pack 1 according to the present invention is completed.

As described above, the battery pack 1 thus obtained has two unit cells 16 and 17 bonded and fixed to the resin frame 2 through the partition wall 5 so as to be integrated with each other. High rigidity even when worn, and excellent impact resistance. Further, since the partition wall 5 is interposed between the two unit cells 16 and 17, the outer peripheral surfaces of the unit cells 16 and 17 do not come into contact with each other. Even if the tube is thin, it is possible to prevent the situation where the insulating tube is broken and the unit cells 16 and 17 are short-circuited.

The tack seal label 20 covering the unit cells 16 and 17 and the support 2a of the resin frame 2 is fixed by pressing both ends in the winding direction from above by the support 3a of the resin frame 3. Therefore, the tack seal label 20 is not peeled off or bent after the battery pack 1 is assembled, so that the commercial value of the battery pack 1 is not reduced.

Further, the column 2a of the resin frame 2 is located inside the tack seal label 20 as shown in FIGS. 2 and 3, and most of the tack seal label 20 is exposed. The design applied to the tack seal label 20 is not bound by the column 2a.

The length L1 of the partition wall 5 projecting from the column 2a of the resin frame 2 may be equal to or less than the length of the unit cells 16 and 17, but the unit cells 16 and 17 having the curl portion and the partition wall. In order to improve the adhesion (parallelism) with the column 5, as shown in FIG. 1, the partition wall 5 having a length L1 which is about half the length of the unit cells 16 17 is provided at the center of the column 2a. It is desirable to install it in the section.

[0024]

[Effect of device]

 As described above, according to the present invention, the pair of substantially I-shaped resin frames 2 and 3 has the frame body 6 welded to each other, and the two unit cells 16 and 17 arranged in parallel are provided. The power generation element 15 connected in series by a conductive connecting plate 19 is housed in the frame body 6, and one of the pair of resin frames 2 and 3 has two plate terminals 12 and 13 and the like. In the battery pack 1 in which terminals are provided and one end of each of the terminals is connected to both ends of the power generating element 15, the partition wall 5 is provided on the column 2a of one of the pair of resin frames 2 and 3. , The power generation element 15 is adhered in such a manner that the partition wall 5 is sandwiched between the unit cells 16 and 17 and fixed to the resin frame 2 provided with the partition wall 5 to be integrated, and the unit cells 16 and 17 are integrated. And the tack seal label 20 covering the support 2a of the resin frame 2 on which the partition wall 5 is provided. Since it is configured with affixed, the power generating element 15 than housing was a conventional battery pack 1 in the resin cases of split and it is possible and this increase the capacity of the battery pack 1. Moreover, since the two unit cells 16 and 17 are bonded and fixed to the resin frame 2 through the partition wall 5 to be integrated, not only the impact resistance is excellent, but also between the two unit cells 16 and 17. Since the partition walls 5 interposed between the unit cells 16 and 17 prevent the outer peripheral surfaces of the unit cells 16 and 17 from contacting each other, it is possible to reliably prevent a short circuit between the unit cells 16 and 17. Furthermore, since the design applied to the tack seal label 20 is not bound by the columns 2a, there is a large degree of freedom in the design that affects the appearance of the battery pack 1.

In addition, of the pair of resin frames 2 and 3, the support 3a of the resin frame 3 to which the power generating element 15 is not fixed presses and fixes both ends of the tack seal label 20 in the winding direction from above. It is possible to prevent the tack seal label 20 from being peeled off or bent after assembling the battery pack 1 to reduce the commercial value of the battery pack 1.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing an embodiment of a battery pack according to the present invention.

3A and 3B are views showing an embodiment of a battery pack according to the present invention, in which FIG. 3A is a front view and FIG. 3B is a rear view.

[Explanation of symbols]

 1 ... Battery 2,3 ... Resin frame 2a, 3a ... Support 5 ... Partition wall 6 ... Frame body 12,13 ... Terminal (plate terminal) 15 ... Power generation element 16,17 ... Unit cell 19 ...... Contact plate 20 …… Tuck seal label

Front page continued (72) Hiroyuki Nakata, 5-16-11 Shimbashi, Minato-ku, Tokyo Fuji Electric Chemical Co., Ltd. (72) Tokuhisa Watabe 5-36-11, Shimbashi, Minato-ku, Tokyo Fuji Electric Chemical Co., Ltd. In the company

Claims (2)

[Scope of utility model registration request] 1. A pair of substantially I-shaped resin frames (2, 3) having a frame body (6) welded to each other, wherein two unit cells (16, 17) arranged in parallel are made of a conductive material. A power generation element (15) connected in series by a communication plate (19) is housed in the frame body, and one terminal of the pair of resin frames (3) is provided with two terminals (12, 13), In a battery pack (1) in which one end of each of the terminals is connected to both ends of the power generating element, a column (2) of one resin frame (2) of the pair of resin frames is provided.
a) is provided with a partition wall (5), and the power generation element is adhered between the unit cells in such a manner that the partition walls are sandwiched between the unit cells and is fixed to a resin frame provided with the partition unit to integrate the unit cells with the unit cells. A battery pack comprising a tack seal label (20) attached to cover a pillar of a resin frame provided with a partition wall. 2. The ends of the tack seal label (20) in the winding direction are pressed from above by the columns (3a) of the resin frame (3) to which the power generation element is not fixed, of the pair of resin frames (2, 3). The battery pack according to claim 1, which is fixed.