JPH08106894A - Packed battery - Google Patents

Abstract

PURPOSE: To safely perform a battery replacement by using, a portable telephone power source, a primary battery-used packed battery having compatibility with a conventional secondary battery-used packed battery, and connecting a charge preventing diode to an internal electronic circuit. CONSTITUTION: In a packed battery for simple portable telephone, particularly, a facing resin case 1 is vertically openable and closable to replace a cylindrical lithium primary battery 2 as occasion demand. The outer form and external contact terminal of this pack battery have compatibility with a conventional secondary battery-used backed battery. A diode 5 is set between the external terminal 3 and internal terminal 4 on the positive electrode side of the case 1, whereby the battery 2 is never charged even when erroneously set to a battery charger. Further, a thermosensitive element or thermal fuse may be set in series to the diode as a double countermeasure to charge prevention. The appearance color tone of the packed battery 2 is preferably yellow, orange, green or while which are opposite colors to the black, gray and blue frequently used in the secondary battery pack.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack as a power source for a mobile phone, particularly a simple mobile phone PHS (Personal Handy Phone System).

[0002]

2. Description of the Related Art Conventionally, as this type of battery pack, a battery pack containing a secondary battery such as a nickel-cadmium battery, a nickel-hydrogen battery or an ionic lithium battery has been used.

[0003]

[Problems to be Solved by the Invention] In recent years, mobile phones have been recognized for their convenience and are rapidly becoming widespread, and are expected to expand further in the future.

Among them, the simple portable telephone PHS (personal handy horn system) has many features such as low equipment investment, low telephone terminal / call charge, and low power consumption of the terminal equipment. It is expected to be a new system.

However, under the present circumstances, since the above-mentioned secondary battery is used as a battery power source, there is a fear that the battery capacity will be constantly exhausted in areas where there is no charging facility, that is, during business trips or outdoors. In addition, as a trend of young people these days, many people are thinking about charging the battery frequently. For this reason, it was said that PHS can only be used within the range of household cordless horns.

A major feature of this system is that it is possible to easily expand the communication area with low capital investment, and it is possible to easily establish a communication network even in remote areas and developing countries where there is no general power source. In this case, it is difficult to charge the battery, and it is necessary to utilize the primary battery. The above problems occur for the following reasons.

The first problem is that when a secondary battery is used, there are problems such as areas where the battery cannot be charged, when the battery capacity runs out during use, and when the charging work is considered to be complicated. It was said that use as a pair with was essential.

That is, it has been said that the main method of use is to always attach the battery to the charger during standby and use it within an appropriate range only during a call.

The present invention solves the above-mentioned problems and provides a battery pack for a primary battery which is compatible with a pack of a secondary battery and which can be replaced safely.

[0010]

In order to solve these problems, the present invention has an outer shape, external contact terminals and the like that are compatible with a conventional pack battery using a secondary battery, and the battery used is a primary battery. Further, it has a structure in which a diode for preventing charging is connected to the internal electronic circuit.

Generally, the purpose can be achieved only by using a diode to prevent charging, but as a double safety measure in the event of one abnormal event, the thermosensitive element (PT
C) or a structure in which a thermal fuse is installed in series with the diode.

The primary battery used is a cylindrical lithium primary battery, and the appearance color tone of the battery pack is generally yellow, orange, green, or white in order to clarify the difference from the secondary battery. It is the opposite color to that used in.

[0013]

With the above structure, since the battery pack is compatible with the secondary battery pack, it can be switched to the battery pack of the present invention at any time when necessary, and its unit cell is also commercially available. It's easy.

Even if the battery pack is erroneously set in the charger with the primary battery still attached, the built-in diode can prevent charging.

Further, even if the worst diode abnormality or other abnormality is caused to overlap and the primary battery is charged, the circuit is cut by the heat sensitive element (PTC), the temperature fuse and the like, which is a double safety design. .

The operating voltage of the portable telephone PHS is 3.
It is said to be 0V to 3.6V, but recently it has become possible to operate even at 2V. However, the voltage drop can be reduced by selecting a diode having a small internal resistance as the diode used.

In order to prevent mishandling, the appearance color tone of the battery pack should be a color tone such as yellow, orange, green, or white, which is the opposite color to black, gray, blue, etc., which are often used in secondary battery packs. To do.

Therefore, by using a cylindrical lithium primary battery as the primary battery, it is possible to operate with the voltage of one battery, and it is suitable for this type of application from the viewpoints of compactness, light weight, storage characteristics and temperature characteristics. And has marketability.

Due to technological advances, the current consumption of the simple mobile phone PHS has been further reduced, and in the near future it will not be used in combination with a secondary battery pack, but from the first design, only the primary battery pack will be commercialized. It is expected to be seen.

[0020]

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

FIG. 1 is a perspective view of the battery pack of the present invention.
Is a sectional view thereof. In FIGS. 1 and 2, reference numeral 1 is an exterior resin case made of a thermoplastic resin such as ABS or polycarbonate and colored in yellow.

It can be opened and closed vertically from the section AA ', and the second cylindrical lithium primary battery (CR123) can be replaced if necessary.

Reference numeral 3 is a positive electrode side external terminal formed by plating a nickel plate with gold, and the diode 5 is installed between the positive electrode side internal terminal 4 and the positive electrode side internal terminal.

Reference numeral 6 denotes an external terminal on the negative electrode side, which is formed by plating a nickel plate with gold, and is connected to the internal terminal on the negative electrode side of 7.

FIG. 3 further shows that the temperature fuse 8 is used in series in the battery circuit as a double safety measure.

[0026]

As described above, the present invention is applied to the portable telephone PH.
As a battery pack for S, it is a pack battery that uses a primary battery having an external shape compatible with a secondary battery, and has a built-in charge prevention diode, a thermal element, and a thermal fuse, and has an external color tone as a secondary battery pack. The present invention provides a battery pack for a primary battery, which has a dual safety mechanism, is highly available, and is not limited to charging work and has excellent convenience.

[Brief description of drawings]

FIG. 1 is a perspective view of a battery pack of the present invention.

FIG. 2 is a sectional view of the battery pack of the present invention.

FIG. 3 is a sectional view of a battery pack which is another embodiment of the present invention.

[Explanation of symbols]

 1 Resin Case 2 Cylindrical Lithium Primary Battery 3 Positive Side External Terminal 4 Positive Side Internal Terminal 5 Diode 6 Negative Side External Terminal 7 Negative Side Internal Terminal 8 Thermal Fuse

Claims (6)

[Claims] 1. A power supply for a mobile phone, the outer shape, connection terminals, etc. of which are the same as those of a commonly used secondary battery pack, and the battery used is a primary battery. Battery having a built-in battery circuit having a diode for preventing the battery from being charged from the outside. 2. The battery pack according to claim 1, wherein the battery has a replaceable structure, and the appearance color tone is at least one of yellow, orange, green, white, and the like. 3. The battery pack according to claim 1, wherein the primary battery used is a cylindrical lithium primary battery. 4. A power supply for a mobile phone, the outer shape, connection terminals, etc. of which are the same as those of a commonly used secondary battery pack, and the battery used is a primary battery. A battery pack having a built-in electronic circuit having a diode and a thermosensitive element (PTC) or a thermal fuse for preventing the battery from being charged from the outside. 5. The battery pack according to claim 4, wherein the battery has a replaceable structure, and its appearance color tone is at least one of yellow, orange, green, white and the like. 6. The battery pack according to claim 4, wherein the primary battery used is a cylindrical lithium primary battery.