JP2001196039A - Degassing structure of battery box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide degassing structure of a battery box housing a nickel- hydrogen battery (secondary battery), for example, loaded in a portable electronic unit for wireless communication. SOLUTION: This degassing structure of a battery box is equipped with a lower case 3 that houses secondary batteries therein with a structure mechanically and electrically connectable to portable electronic units, an upper case 1 to cover this lower case 3, and holes 4 bored on this upper case corresponding to the position of the plus pole of the above-mentioned secondary batteries.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery box containing, for example, a nickel-metal hydride battery (secondary battery) which is attached to a portable electronic device such as a portable telephone for wireless communication. It relates to the improvement of the structure.

[0002]

2. Description of the Related Art In recent years, portable electronic devices, for example, mobile phones have been desired by users as a whole to be thin, lightweight, and compact, and these tendencies have been further strengthened. Such portable electronic devices employ rechargeable (eg, nickel-hydrogen rechargeable) batteries, which are generally formed by winding a sheet-like positive / negative electrode plate through a separator, as is well known. In particular, a gas discharge port for discharging gas generated inside to the outside is provided on the positive electrode terminal side.

As a result, the internal gas is discharged to the outside, and for some reason, for example, hydrogen gas due to overcharging is discharged to the outside. In this way, in the case of a single battery, a structure is used in which the battery itself is devised so as not to cause an unforeseen situation, but when these batteries are used in a battery box, the battery box is semi-sealed. Therefore, the gas generated from the battery may be filled in the battery box, which may cause a dangerous state. Therefore, a structural measure for smoothly discharging the gas to the outside of the battery box is required.

[0004] For this purpose, a structure has been proposed in which an appropriate portion of the battery box is cut out to release gas generated from the battery to the outside, but it cannot be said that this is sufficient, and there is still room for improvement. Was something. In particular, a structure is required in which hydrogen gas is generated due to overcharging or the like, and when filled inside, it becomes extremely dangerous.Therefore, there is a need for a structure in which hydrogen gas is smoothly discharged from the battery box before the gas is filled. is there.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lower cover housing a secondary battery in a structure that can be mechanically and electrically coupled to a portable electronic device, and a lower cover of the lower cover. An upper cover body for covering the opening portion, and a hole formed in the upper cover body in a position corresponding to the positive pole of the secondary battery, and mechanically and electrically connected to the portable electronic device. An upper lid body that stores a secondary battery therein with a possible structure, a lower lid body that covers an opening portion of the upper lid body, and the lower lid body is opened corresponding to the positive electrode of the hydrogen battery. The gas generated inside the battery can be smoothly discharged from the battery box after being discharged from the gas discharge port by making it into a hole, so that even if gas is generated, the gas is discharged smoothly. Battery box that can be safely charged without danger. It is intended to provide a gas vent structure of the scan.

[0006]

One of the means for solving the problems of the present invention comprises a lower lid body having a structure in which a secondary battery is housed in a structure which can be mechanically and electrically coupled to a portable electronic device. Gas venting of a battery box, comprising: an upper lid for covering an opening portion of the lower lid; and a hole formed in the upper lid so as to correspond to a positive pole of the secondary battery. The second configuration is an upper lid housing a secondary battery in a structure that can be mechanically and electrically coupled to the portable electronic device, and a lower lid that covers an opening of the upper lid. And a hole formed in the lower lid so as to correspond to the positive pole of the secondary battery.

[0007]

A hole is provided at a position corresponding to the positive pole of the battery housed inside either the upper lid or the lower lid constituting the battery box, and this hole is formed at the positive pole of the battery, that is, inside the battery. The generated gas is discharged to the outside of the battery box smoothly without being filled in the battery box because it is close to the gas outlet for discharging the gas, so that there is no fear of danger due to the charging.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1, 2 and 3. 1, 2, and 3
Is a schematic assembly view. 1 is a plastic rectangular upper lid, which covers the opening of the lower lid 3 of the same material as the upper lid 1 in which the battery 2 is housed. And the lower lid 3 are fixed by welding. In other words, the upper lid 1 and the lower lid 3 adopt a structure of an inlay fitting, so that the upper lid 1 can reliably cover the opening of the lower lid 3.

The battery 2 is a nickel-hydrogen secondary battery in which two batteries are arranged in parallel, and the positive electrode of the battery 2 is set on the upper side in the drawing. Therefore, the lower side is a negative pole. Holes 4 are formed on the upper right and left sides of the upper lid 1, and correspond to positions above the positive pole of the battery 2. In this state, when gas is generated in the battery 2 for some reason and the gas is discharged from the gas outlet of the battery 2, the hole 4 corresponds to a location very close to the gas outlet of the battery 2. The gas is discharged smoothly out of the battery box.

FIG. 2 shows a configuration in which three batteries 2 are arranged in parallel to the two batteries 2 shown in FIG. Note that the same components as those in FIG. 1 are denoted by the same reference numerals and description thereof is omitted. In FIG. 2, the three batteries 2 are arranged such that the middle battery 2 has the polarity opposite to that of the left and right batteries 2. Therefore, the upper side of the left and right batteries 2 has a positive pole, and the lower side has a negative pole. The battery 2 has a negative pole on the upper side and a positive pole on the lower side.

When three batteries 2 are arranged in this manner, holes 4 of the upper lid 1 that cover the opening of the lower lid 3 are formed in three places. That is, the hole 4 is formed at a position corresponding to the position on the positive pole of the battery 2.
If the hole 4 is provided in such a position, the gas is smoothly discharged from the battery box because the position of the hole 4 is near the positive electrode of the battery 2, that is, the position near the gas discharge port of the battery 2.

FIG. 3 is the same as the case where the two batteries 2 of FIG. 1 are arranged in parallel, except that the poles of the two batteries 2 are alternately arranged in parallel. Note that the same components as those in FIG. 1 are denoted by the same reference numerals and description thereof is omitted. In FIG. 3, since the batteries 2 are arranged alternately, one has a positive pole on the upper side and the other has a negative pole on the upper side. The lower side is the minus pole and the plus pole, respectively.

When two batteries 2 are arranged as described above, holes 4 of the upper lid 1 that cover the opening of the lower lid 3 are formed in two places. That is, the hole 4 is formed at a position corresponding to the position on the positive pole of the battery 2.
If the hole 4 is provided in such a position, the gas is smoothly discharged from the battery box because the position of the hole 4 is near the positive electrode of the battery 2, that is, the position near the gas discharge port of the battery 2. Thus, unlike the case of FIG. 1, in the case of the example of FIG. 3, the hole 4 is formed just on the diagonal line of the upper lid 1. In FIG. 1, when two positive poles of the battery 2 are arranged in parallel on the lower side, the hole 4 may be opened on the lower side of the upper lid 1. In FIG. 2, when the battery 2 is placed upside down, a hole 4 may be formed in the upper lid 1 above the positive electrode. That is, one of the holes 4 is the upper lid 1
It is sufficient to make two holes 4 on the upper side and on the lower side. Further, as shown in FIG. 3, when the batteries 2 shown in FIG. 3 are arranged in parallel, the holes 4 in the upper lid 1 may be opened corresponding to the positions.

[0014]

As described above, according to one aspect of the present invention, a lower cover housing a secondary battery therein and having a structure mechanically and electrically connectable to a portable electronic device, and the lower cover And a hole formed in the upper cover so as to correspond to the positive pole of the secondary battery. A second configuration is an upper lid body that houses a secondary battery in a structure that can be mechanically and electrically coupled to a portable electronic device, a lower lid body that covers an opening of the upper lid body, and a lower lid body. Since the gas vent structure of the battery box is characterized by having a hole formed in the body corresponding to the positive pole of the secondary battery in a position corresponding to the positive electrode, the gas generated from the battery can be smoothly removed from the battery box. Effective because it can be discharged without fear of accident One in which large made.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an embodiment of the present invention.

FIG. 2 is a schematic assembly perspective view of another embodiment of the present invention.

FIG. 3 is a schematic perspective view of another embodiment of the present invention.

[Explanation of symbols]

 1 upper lid 2 battery 3 lower lid 4 hole

Claims (4)

[Claims] 1. A lower lid housing a secondary battery therein so as to be mechanically and electrically connectable to a portable electronic device, an upper lid covering an opening of the lower lid, and an upper lid. A venting structure for a battery box, comprising a body and a hole formed corresponding to a positive electrode of the hydrogen battery. 2. An upper cover housing a secondary battery therein so as to be mechanically and electrically connectable to a portable electronic device, a lower cover covering an opening of the upper cover, and a lower cover. A venting structure for a battery box, comprising a body and a hole formed corresponding to a positive electrode of the hydrogen battery. 3. A lower lid housing at least two rechargeable batteries in a structure that can be mechanically and electrically coupled to a portable electronic device, and an upper lid that covers an opening of the lower lid. When,
A venting structure for a battery box, comprising a hole formed in the upper lid so as to correspond to a positive electrode of the hydrogen battery. 4. An upper lid body having at least two rechargeable batteries housed therein and having a structure mechanically and electrically connectable to a portable electronic device, and a lower lid body covering an opening of the upper lid body. ,
A gas vent structure for a battery box, comprising: a hole formed in the lower lid so as to correspond to a positive electrode of the hydrogen battery.