JP2001307703A - Battery pack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increases strength of a battery. SOLUTION: A battery pack is formed by welding or bonding the first case 10a and the second case 10b that are structured by using, for example, a synthetic resin, to store a battery case 20 where a battery member has been enclosed. By bonding a reinforcing board 12 made of, for example, stainless steel, on the surface of the battery pack, its rigidity can be improved. Also, by printing a character information and a picture on the reinforcing board 12, and/or by forming an irregularity indicating a character information and a picture on the reinforcing board 12, it fuctions as a name plate. By forming a wall of a portion of the battery pack where the reinforcing board 12 is to be attached thinner than the other part, an increase in volume can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack suitable for storing a battery for supplying power to a portable electronic device such as a mobile telephone device, and more particularly, to a battery pack capable of increasing strength.

[0002]

2. Description of the Related Art A secondary battery is often used as a power supply for supplying power to a portable electronic device such as a mobile telephone device and a notebook personal computer. In such a portable electronic device, it is desirable to reduce the weight and capacity in order to enhance portability, and it is preferable that a battery serving as a power supply be as thin and light as possible. In this regard, as a technique for realizing a lightweight secondary battery, a laminate pack type battery in which a battery member such as an electrolytic substance is sealed in a laminate container using a metal such as aluminum and a resin is known. Such a laminate pack type battery cannot secure the rigidity of the battery pack by itself, and therefore may be stored in a battery pack such as a synthetic resin.

[0003]

In the above-mentioned prior art, even if a laminate pack type battery is stored in a battery pack made of synthetic resin or the like, sufficient rigidity for installation in electronic equipment or the like may not be ensured. In this regard, a metal case may be used as the battery pack, but this reduces the advantage of the light weight of the laminate pack type battery.

[0004] The present invention has been made in view of the above situation, and has as its object to provide a battery pack capable of increasing the strength of a lightweight battery.

[0005]

In order to achieve the above object, a battery pack according to the present invention is for storing a battery case enclosing a battery member, and is provided with a pack case formed of a synthetic resin. And a metal reinforcing plate added to the pack housing.

According to the present invention, the rigidity can be increased by adding a metal reinforcing plate to the pack housing. Further, since the pack housing is formed using a synthetic resin, the lightness is not reduced. Thereby, the strength of the lightweight battery can be increased.

For example, it is desirable that the reinforcing plate is attached to a surface of the pack housing. At this time, character information and / or graphics may be printed on the reinforcing plate.
That is, the strength of the battery can be increased by using a reinforcing plate that can function as a nameplate.

[0008] Further, a nameplate attached to the surface of the pack housing may be provided. That is, a nameplate may be attached to the surface of the pack housing separately from the reinforcing plate.

[0009] The reinforcing plate may be attached to the inside of the pack casing. Alternatively, the reinforcing plate may be insert-molded inside the pack housing.

[0010] In the pack case, it is desirable to form a concave portion in which the thickness of a portion to which the reinforcing plate is added is smaller than the thickness of other portions.

For example, it is desirable that the pack housing stores a battery case made of laminate. The reinforcing plate is desirably made of stainless steel.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) Hereinafter, a battery pack according to a first embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a battery pack 100 according to an embodiment of the present invention. This battery pack 1
Reference numeral 00 denotes a housing for storing a laminated pack type battery in which a battery member such as an electrolytic substance is sealed in a laminated container made of aluminum, for example. As shown in FIG.
0, terminal electrodes 11, and reinforcing plates 12.

[0014] The battery pack 100 is
And is formed using, for example, a synthetic resin or the like.
For example, as shown in FIG. 2, the pack case 10 is formed by welding or bonding a first case 10a and a second case 10b to store a laminated battery case 20 enclosing a battery member. Assembled.

The terminal electrode 11 is connected to a positive electrode member and a negative electrode member drawn out of a battery case 20 stored in the pack housing 10 and supplies power to an electronic device or the like to which the battery pack 100 is mounted. belongs to.

The reinforcing plate 12 is made of a highly rigid metal such as stainless steel.
This is for increasing the intensity of 0. Here, the reinforcing plate 12 can function as a nameplate by printing or embossing character information such as the name and serial number of the manufacturer, or a graphic such as a logo mark of the manufacturer. . The reinforcing plate 12 is attached to the surface of the pack housing 10 with, for example, an adhesive.

Next, the operation when assembling the battery pack 100 according to the first embodiment of the present invention will be described. This battery pack 100 is a battery pack in which the strength of a lightweight battery is increased by attaching a highly rigid metal reinforcing plate 12 to the pack housing 10.

That is, this battery pack 100 is
As shown in FIG. 1, a first case 10a and a second case 10 made of, for example, a synthetic resin are used to store a battery case 20 made of a laminate in which a battery member is sealed.
and b by heating or ultrasonic welding, or by bonding using an adhesive. At this time, the terminal electrode 11 is connected to the positive electrode member and the negative electrode member drawn out of the battery case 20.

Thereafter, by attaching a reinforcing plate 12 made of, for example, stainless steel to the surface of the pack housing 10, bending rigidity and torsional rigidity can be improved. Here, on the reinforcing plate 12, for example, characters such as the name of the manufacturer of the battery pack 100, the serial number of the battery pack 100, and the logo of the manufacturer of the battery pack 100 are printed. Alternatively, it can be made to function as a nameplate by embossing.

For example, on the reinforcing plate 12, character information indicating the name of the manufacturer, a graphic indicating the logo of the manufacturer, etc. are printed by ink application or printing. Alternatively, the reinforcing plate 12 forms irregularities indicating character information such as the name of the manufacturer or a graphic such as a logo mark by, for example, press working.

Here, the pack housing 10 may be formed with a concave portion so that the thickness of the portion where the reinforcing plate 12 is attached is smaller than the thickness of the other portions. For example, pack housing 1
At 0, the thickness of the portion where the reinforcing plate 12 is attached is made thinner by about the thickness of the reinforcing plate 12 than the thickness of the other portions, and by attaching the reinforcing plate 12, the thickness of the entire pack housing 10 is reduced. Make the thickness even. Thus, it is possible to prevent the capacity of the pack housing 10 from increasing due to the attachment of the reinforcing plate 12.

(Second Embodiment) In the first embodiment, the name and serial number of the manufacturer can be printed and stamped on the reinforcing plate 12 so that the reinforcing plate 12 can function as a nameplate. However, the present invention is not limited to this. FIG.
Is a battery pack 20 according to the second embodiment of the present invention.
FIG. 3 is a diagram showing a configuration of a zero. As shown in the figure, the battery pack 200 includes a nameplate 13 on which a manufacturer name, a serial number, and the like are printed separately from the reinforcing plate 12.

When assembling the battery pack 200, the first case 10a and the second case 10b are welded or adhered, and the terminal electrode 11 is connected to the battery case in the same manner as in the first embodiment. The positive electrode member and the negative electrode member pulled out from 20 are connected. After this, the pack housing 10
The nameplate 13 is pasted together with the reinforcing plate 12 on the surface of. Here, the nameplate 13 is, for example, an adhesive label made of paper, and the nameplate 13 itself does not increase the rigidity of the battery pack 200. Therefore, by attaching the reinforcing plate 12 to the pack housing 10 to reinforce the strength of the battery pack 200, the bending rigidity and the torsional rigidity can be improved.

In this case, similarly to the first embodiment, the pack housing 10 is provided with a concave portion so that the thickness of the portion to which the reinforcing plate 12 is attached is smaller than the thickness of the other portions. May be formed.

(Third Embodiment) The present invention is not limited to the case where the reinforcing plate 12 is attached to the surface of the pack housing 10. FIG. 4 is a diagram showing a configuration of a battery pack 300 according to the third embodiment of the present invention. As shown
In the battery pack 300, the reinforcing plate 12 is
Prepare inside.

When assembling the battery pack 300, a third case 30a forming the pack housing 30 is provided.
When welding the fourth case 30b, the battery case 20
At the same time, the reinforcing plate 12 is attached and stored inside the pack housing 30. Here, the reinforcing plate 12 may be insert-molded inside the pack housing 30.

The inside of the pack housing 30 is provided with a space for adding the reinforcing plate 12 by pasting or insert molding, so that the reinforcing plate 12 can be stored together with the battery case 20. For example, when attaching the reinforcing plate 12 to the fourth case 30b, the fourth case 30b
A concave portion in which the thickness of the portion where the reinforcing plate 12 is to be attached is smaller than the thickness of the other portions is formed, and the reinforcing plate 12 is attached to the concave portion.

By providing the reinforcing plate 12 inside the pack housing 30 in this manner, the strength of the lightweight battery can be increased.

As described above, according to the present invention,
By attaching the metal reinforcing plate 12 to the housing that stores the battery case 20 or by adding it by insert molding, the rigidity can be increased, and the strength of the lightweight battery can be increased.

The battery packs 100 to 300 are:
The present invention is not limited to the case where the battery case 20 made of a laminate is stored, but is applicable to the case where a battery case of any form is stored.

The metal used for the reinforcing plate 12 is as follows.
The material is not limited to stainless steel, and any material that can obtain high rigidity, such as magnesium, can be used.

[0032]

As described above, according to the present invention, the strength of a lightweight battery can be increased by installing a highly rigid reinforcing plate in the housing of a battery pack.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a battery pack according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining an operation when assembling a battery pack.

FIG. 3 is a diagram for explaining a battery pack according to a second embodiment of the present invention.

FIG. 4 is a diagram for explaining a battery pack according to a third embodiment of the present invention.

[Explanation of symbols]

 10, 30 pack housing 10a, 10b, 30a, 30b case 11 terminal electrode 12 reinforcing plate 13 nameplate 20 battery case 100, 200, 300 battery pack

Claims (9)

[Claims] 1. A battery pack for storing a battery case enclosing a battery member, comprising: a pack housing formed using a synthetic resin; and a metal reinforcing plate added to the pack housing. A battery pack comprising: 2. The battery pack according to claim 1, wherein the reinforcing plate is attached to a surface of the pack case. 3. The battery pack according to claim 2, wherein character information and / or graphics are printed on the reinforcing plate. 4. The battery pack according to claim 1, further comprising a nameplate attached to a surface of the pack housing. 5. The battery pack according to claim 1, wherein the reinforcing plate is attached inside the pack casing. 6. The battery pack according to claim 1, wherein the reinforcing plate is insert-molded inside the pack casing. 7. The pack casing according to claim 1, wherein a thickness of a portion to which the reinforcing plate is added is smaller than a thickness of another portion. The battery pack according to claim 1. 8. The battery pack according to claim 1, wherein the pack housing stores a battery case made of a laminate. 9. The battery pack according to claim 1, wherein the reinforcing plate is made of stainless steel.