JP3350957B2 - 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 for accommodating a plurality of batteries suitable for use as a DC power source for electric equipment.

[0002]

2. Description of the Related Art FIG. 3 is a perspective view showing an external appearance of an example of a battery pack 10.
And a case 18 comprising a bottom case 16. In this example, cylindrical batteries (battery cells) are arranged in two rows in the battery pack 10, and a total of four batteries are accommodated. The four batteries may be electrically connected to each other in series to form a battery pack.

[0003] Holes 120, 1 having ribs are provided around the bottom surface.
22, 124, 126 (only holes 124, 126 are shown)
The holes 120 to 126 are configured to receive corresponding projections formed in the battery storage unit when the battery pack 10 is mounted in the battery storage unit of the electric device.

A concave portion 8 is provided at a front end 16-1 of the bottom case 16.
0 and 82 are formed, and the first and second electrodes 36 and 38 of the assembled battery are arranged on the bottom surfaces of the concave portions 80 and 82.

[0005] The electrodes 36 and 38 function as charging electrodes when the battery pack 10 is mounted on a charger and charge, and function as power supply electrodes when the battery pack 10 is mounted on an electric device and power is supplied. I do.

FIG. 4 shows the first electrode 3 arranged in the recess 80.
6 shows a configuration example. FIG. 4A shows the front end 16 of the bottom case 16.
-1 is a partial cross-sectional view, and FIG. 4B is a front view thereof.
A substantially circular hole 84 is formed on the bottom surface of the concave portion 80,
The first electrode 36 is arranged along the inner surface of the hole 84. The configuration of the second electrode 38 disposed in the concave portion 82 may be the same as the configuration shown in FIG.

FIG. 5 shows the electrodes 36 of the battery pack 10.
An example of a connection terminal 90 for connecting to the connection 38 is shown. Such a connection terminal 90 is arranged in a battery housing of a charger or an electric device. The connection terminal 90 has a cylindrical shape corresponding to the hole of the battery pack 10, and two springs 92A and 92B are provided on the cylindrical surface.

[0008]

In the example shown in FIGS. 3 and 4, since the hole 84 formed in the concave portion 80 has a closed bottom, dust and the like easily accumulate in the hole 84.
If dust or the like accumulates in such holes 84, the electrical connection between the electrodes 36 and 38 of the battery pack 10 and the connection terminal 90 of the charger or the electric device may be defective.

In view of the above, the present invention prevents dust from accumulating in the recess in the battery pack 10 in which the output terminals 36 and 38 are disposed in the recess or hole 84 formed on the outer surface of the case. The purpose is to:

[0010]

As shown in FIG. 1, for example, a battery pack according to the present invention includes a case 18 for accommodating a battery cell, and a concave portion 80 provided at an end of the case 18.
In addition, a first through hole 84 is formed in the concave portion 80 and a second through hole 88 connected to the first through hole 84 is provided. The electrode 36 is disposed in the first through hole 84. Things.

[0011]

[0012]

[0013]

Since the second through hole 88 for discharging dust and the like is provided at the bottom of the first through hole 84 in which the electrode 36 of the output terminal is disposed, the first through hole 84 is provided. The dust or the like that has entered is discharged from the second through hole 88.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2, the same reference numerals are given to the corresponding portions in FIGS. 3 and 5, and the detailed description thereof will be omitted.

FIG. 1 shows the details of the front end of the battery pack 10 of the present invention, and is a view corresponding to FIG. FIG. 1A is a partial cross-sectional view of the front end 16-1 of the bottom case 16, and FIG.
B is a front view thereof.

Recesses 80 and 82 are formed in the front end 16-1 of the bottom case 16 of the battery pack 10, and holes 84 and 86 are formed in the recesses 80 and 82, respectively. Output terminals of the battery pack, that is, first and second electrodes 36 and 38 are arranged on the bottom surfaces of the holes 84 and 86, respectively.

The electrodes 36 and 38 function as charging electrodes when the battery pack 10 is mounted on a charger and are charged, and function as power supply electrodes when the battery pack 10 is mounted on an electric device and power is supplied. I do.

FIG. 1 shows holes 84 and 86 formed in recesses 80 and 82, respectively, and first and second holes respectively disposed therein.
One of the electrodes 36 and 38, that is, the first hole 84 and the configuration example of the first electrode 36 arranged in the first hole 84 are shown. The configuration of the second hole 86 and the second electrode 38 disposed therein is shown in FIG.
The first hole 84 shown in FIG.
The configuration may be the same as that described above.

A substantially circular hole 84 is formed in the bottom surface of the concave portion 80, and the first electrode 3 extends along the inner surface of the hole 84.
6 are arranged.

As is clear from the comparison between FIG. 1 and the conventional example shown in FIG. 4, in this example, a hole 88 for discharging dust or the like is formed at the bottom of the hole 84, and the hole 88 is formed in the hole 84. From the bottom of the bottom case 16 to the bottom surface 16-3 of the bottom case 16.

Accordingly, the holes 84 and 88 form a through hole extending from the front end 16-1 of the bottom case 16 to the bottom surface 16-3. Thus, even if dust or the like enters the hole 84, the dust or the like is discharged from the bottom of the hole 84 to the outside of the battery pack 10 via the hole 88.

FIG. 2 shows another example of the battery pack 10 of the present invention. In this example, the hole 8 provided at the bottom of the hole 84
Reference numeral 8 extends inside the battery pack 10. Therefore, the bottom of the hole 84 is formed by the hole 88 in the case 18.
But is not connected to the outside of the case 18. In this example, the dust or the like entering the hole 84 is the hole 8
4 is discharged into the battery pack 10 through the hole 88 from the bottom.

According to the example described above, dust and the like entering the hole 84 are discharged from the bottom of the hole 84 to the outside of the hole 88 via the hole 88, so that dust and the like accumulate at the bottom of the hole 84. Nothing.

As shown in FIG. 1, a discharge hole 88 for such dust is formed in the center of the bottom of the hole 84, and the periphery of the discharge hole 88 is chamfered to form a smoothly curved surface. Preferably, it is formed. Thus, even if dust or the like enters the bottom of the hole 84, if the connection terminal 90 as shown in FIG. Can be discharged.

Although the embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that the present invention is not limited to the above-described embodiments and can adopt various other configurations without departing from the gist of the present invention. It will be easily understood.

[0026]

According to the present invention, even if dust or the like enters the hole 84 for the electrode formed in the battery pack 10, the dust is discharged from the discharge hole 88 formed in the hole 84. There is the advantage that it does not accumulate at the bottom of 84.

According to the present invention, dust and the like do not accumulate in the hole 84 for the electrode formed in the battery pack 10, so that poor electrical contact caused by accumulation of the dust and the like in the hole 84. This has the advantage of preventing

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration example of a battery pack of the present invention.

FIG. 2 is an explanatory diagram showing another configuration example of the battery pack of the present invention.

FIG. 3 is a perspective view showing an example of a conventional battery pack.

FIG. 4 is an explanatory view showing a part of the battery pack of FIG. 3 in detail;

FIG. 5 is a diagram showing an example of a connection terminal inserted into a hole of a battery pack.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Battery pack 14 Upper case 16 Bottom case 16 ─ 1 Front end 16 2 Rear end 16 ─ 3 Bottom surface 18 Case 36, 38 Electrode 80, 82 Concave part 84, 86 hole 88 hole 90 Terminal 92 A, 92 B Spring 120, 122, 124, 126 holes

Claims (1)

(57) [Claims] 1. A case for accommodating a battery cell, a recess provided at an end of the case, a first through hole formed in the recess, and a second through hole connected to the first through hole. And a hole is provided, and an electrode is provided in the first through hole.