JPH0817410A - Pack battery - Google Patents

Abstract

PURPOSE:To form a shape of a pack battery so as to provide interchangeability with a dry battery, by forming a trapezoidal part protruded in a central part in a side surface of the pack battery, and arranging a charging terminal in this tapezoidal part. CONSTITUTION:A connecting terminal electrically connected to a terminal group 25 in a side surface side of a pack battery 21 is formed in an inner side wall of a battery mounting recessed part 14 of a battery cover 11. In this battery cover 11, an escape recessed part receiving a trapezoidal part 226 is formed in a bottom surface of the battery mounting recessed part 14. A connecting terminal is provided in a side wall of the battery mounting recessed part 14, and the connecting terminal is brought into contact with a discharging terminal, arranged on a diagonal line, when the pack battery 21 is mounted in the recessed part 14. When a dry battery is mounted, the connecting terminal is brought into contact with individual each terminal of the dry battery. Here is left as connected the connecting terminal to a mounting surface and an electrode terminal. Here by completely receiving the trapezoidal part 226 to a recessed part 119, even both the dry battery and the battery 21 can be mounted on the cover 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack compatible with a dry battery when mounted on an electric device.

[0002]

2. Description of the Related Art In recent years, electric devices have been reduced in size and weight, and many portable electric devices have been developed. Batteries are used as power sources because portable electric devices cannot use commercial AC for household use as a power source. Further, recently, mobile phones have become widespread, and opportunities to use the mobile phones have increased. Cellular phones are very convenient because they can receive and make calls even when you are out, but they have the drawback that they cannot be used when the battery is exhausted and the power is cut off. This drawback can be solved by carrying a spare battery with you in case the battery runs out. On the other hand, in the case of continuous use for a long time, it is better to prepare a high-capacity battery that can be used for a long time so that the battery does not run out on the way and the call is interrupted.

By the way, a secondary battery such as a nickel-cadmium battery or a nickel-hydrogen battery, which has a more stable discharge voltage than a dry battery, is desirable as a power source for a mobile phone. Further, the secondary battery is economical because it can be repeatedly used by being charged. In addition, such a secondary battery is more convenient to use if it is made into a pack battery in which a plurality of secondary batteries are put together, because it is easy to install in a device and is easy to charge.

Furthermore, if the power source of the portable telephone can be used with either a secondary battery or a dry battery, the convenience of use is further improved. This is because if the secondary battery used as a power source runs out of battery, you can purchase a dry battery that is relatively easy to obtain even when you are out and can use the dry battery as a power source immediately. In addition, since the secondary battery must be recharged in order to be used repeatedly, and the secondary battery cannot be used during charging, the dry battery can be used as a power source during that time.

As described above, although it is desirable that a plurality of types of batteries can be mounted on the mobile phone, the shape of the dry battery, the rechargeable battery pack battery, and the high-capacity rechargeable battery pack battery can be changed. It was difficult to make the same etc., and it was difficult to make it compatible so that any battery could be attached when it was attached to the mobile phone.

[0006]

Therefore, the present invention is
The shape of the battery pack is made compatible with the dry battery so that the battery pack can also be installed in an electric device or the like to which the dry battery can be installed.

[0007]

The battery pack of the present invention has the following structure in order to make it compatible with dry batteries. That is, in a pack battery in which a plurality of columnar secondary batteries each having both end faces and side faces are arranged and incorporated so that the side faces are adjacent to each other, the pack battery corresponds to the face formed by the adjacent side faces of the secondary battery. On the side surface of the battery pack, a trapezoidal portion is formed at the center of the side surface, and a charging terminal is arranged on the trapezoidal portion.

[0008]

In the battery pack of the present invention, the trapezoidal portion is provided with a charging terminal which is unnecessary for a dry battery. This trapezoidal portion is provided in the central portion on the side surface of the battery pack. Here, when a dry battery or a battery pack is attached to an electric device, etc., the battery is not exposed to the outside and is covered with some kind of cover, but the trapezoidal part of the battery pack is By being stored in the corresponding recess, the battery pack fits comfortably in the cover. Further, since the trapezoidal portion is provided only in the central portion of the long side surface, the peripheral edge portion of the side surface has the same thickness as the dry battery. Therefore, even if the battery pack is replaced with a dry battery, it can be stored without rattling. As a result, both a battery pack and a dry battery can be attached to an electric device.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. A mobile phone 1 has a power supply mounting portion 2 on the back side of a dial button and a display portion. Although not shown, the power supply mounting portion 2 is provided with a pair of + and − terminals.

Next, 11 is a battery cover, and the mounting surface 12 of the battery cover 11 is mounted on the power supply mounting portion 2. At this time, the battery cover 11 is mechanically engaged so as not to be disengaged from the power source mounting portion 2, and at the same time, the terminals of the power source mounting portion 2 and the electrode terminals 13 provided on the mounting surface 12 of the battery cover 11 are electrically connected. It is designed to connect. A battery mounting recess 14 is formed on the mounting surface 12. A battery pack 21 to be described later is provided in the battery mounting recess 14.
Is attached. A recess 15 for engaging the battery pack and a positioning protrusion 16 are provided on the inner wall of the battery mounting recess 14.

On the other hand, the battery pack 21 is provided with an engaging projection 22 and a positioning recess 23 on its side surface. The engagement projection 22 engages with the engagement recess 15 to prevent the battery pack 21 from coming off, but the engagement between the two is a shallow engagement and the battery cover 11 is turned upside down. The battery pack 21 can be easily removed by shaking off.

The battery pack 21 has a total of three types of terminals, positive and negative electrode terminals and thermistor terminals dedicated to charging. The battery pack 21 has a terminal group 24 on its surface and a terminal group 25 on its side surface. A total of 6 terminals are provided.
The battery pack 21 can take output from either the front surface or the side surface, and can receive power supply for charging.

The battery mounting recess 1 of the battery cover 11
On the inner wall of 4, the terminal group 25 on the side of the battery pack 21 is provided.
The connection terminal electrically connected with is formed. Although not shown, the three connection terminals are provided so as to correspond to the terminal group 25.
Two terminals connected to the electrode terminals of-and-are directly connected to the electrode terminals 13 of the mounting surface 12. At the same time, these three connection terminals are directly connected to the three terminals 17 on the side surface of the battery cover 11.

A rubber packing 18 is attached to the outer peripheral edge of the mounting surface 12 of the battery cover 11. Therefore, by mounting the battery cover 11 on the mobile phone 1, the rubber packing 18 waterproofs the gap. Therefore, it is possible to prevent water from entering the respective mounting surfaces, and to install the battery pack 2 in the battery mounting recess 14 of the battery cover 11.
In order to prevent water from entering the battery pack 1, it is not necessary to provide the battery pack 21 with a waterproof structure.

By the way, FIGS. 1 to 3 and FIGS. 4 to 6 both show a diagram in which the battery cover 11 in which the battery pack 21 is mounted is mounted on the mobile phone 1. First, those shown in FIGS. 1 to 3 show a battery pack having a small capacity and a battery cover adapted to it, and those shown in FIGS. 4 to 6 show a battery pack having a large capacity and a battery cover adapted to it. The battery pack having a small capacity shown in FIGS. 1 to 3 is thin because the number of built-in secondary batteries is small, and the battery pack having a large capacity has a large number of secondary batteries and is thick. These battery packs have different shapes only in thickness. Further, the battery covers adapted to each have different shapes only in thickness. Therefore,
The shape of the mounting surface 12 of the battery cover is exactly the same, and it can be selectively mounted on the common mobile phone 1.

Next, when charging the battery pack 21,
The battery pack 21 is taken out from the battery cover 11 and charged by a dedicated charger. In this case, the terminal group 24 on the surface of the battery pack is electrically connected to the contacts on the charger side to be charged. At this time, as described above, FIGS.
The battery pack shown in FIG. 4 and the battery packs shown in FIGS. 4 to 6 differ only in thickness and have the same shape of the surface provided with the terminal group 24, and therefore can be charged by a common charger.

Further, the battery pack 21 is attached to the battery cover 11
It can be charged even when it is attached to the mobile phone 1. In this case, the contact 1 of the battery cover 11 described above
You can use 7 to charge each mobile phone in a style that leans against another dedicated charger.

Now, what is shown in FIGS. 7 to 15 will be described. The battery cover 111 shown in these figures has a structure in which either the dry battery 220 or the battery pack 221 can be mounted. First, the battery pack 221 is built by connecting three secondary batteries in series,
5 are arranged diagonally. On the other hand, the charging terminal 224 is formed in a trapezoidal portion 226 that is raised from the surface of the battery pack 221.

The battery cover 111 has a battery mounting recess 114.
An escape recess 119 is formed on the bottom surface of the trapezoidal part 226 so that the trapezoidal part 226 can be completely accommodated. The battery mounting recess 114
The connection terminal 120 is provided on the side wall of the. The connection terminal 120 contacts the discharge terminals 225 arranged on the diagonal when the battery pack 221 is mounted in the battery mounting recess 114, and contacts the individual terminals of the dry battery 220 when the dry battery 220 is mounted. . The connection terminal is directly connected to the electrode terminal 113 on the mounting surface 112.

Now, the dry battery 22 is attached to the battery cover 111.
When 0 is attached, the result is as shown in FIGS. 12 to 15, and when the battery pack 221 is attached, as shown in FIGS. In this case, the trapezoidal portion 226 causes the escape recess 1
Fits perfectly in 19. As a result, either the dry battery 220 or the battery pack 221 can be attached to the battery cover 111.

The arrangement of the charging terminals 224 of the battery pack 221 is made by the terminal group 24 of the battery pack 21 described above.
Since the arrangement is the same as the above, both battery packs can be charged by a common charger.

[0022]

According to the battery pack of the present invention, the trapezoidal portion is provided with a charging terminal which is unnecessary for a dry battery. This trapezoidal portion is provided at the center of the side surface of the battery pack. Here, when a dry battery or a battery pack is attached to an electric device, etc., the battery is not exposed to the outside and is covered with some kind of cover, but the trapezoidal part of the battery pack is By being stored in the corresponding recess, the battery pack fits comfortably in the cover. Further, since the trapezoidal portion is provided only in the central portion of the side surface, the peripheral edge portion of the side surface has the same thickness as the dry battery. Therefore, even if the battery pack is replaced with a dry battery, it can be stored without rattling. As a result, both a battery pack and a dry battery can be attached to an electric device.

Further, in this trapezoidal portion, in addition to the + and-terminals as a charging terminal, a temperature terminal or the like for detecting the battery temperature at the time of charging can be arranged, and in the internal space of the trapezoidal portion. An element used for charge control such as a thermistor can be arranged.

[Brief description of drawings]

FIG. 1 is a perspective view showing a battery pack and a battery cover.

FIG. 2 is a perspective view showing a mobile phone, a battery pack, and a battery cover.

FIG. 3 is a perspective view showing a state in which a battery cover is attached to a mobile phone.

FIG. 4 is a perspective view showing a battery pack and a battery cover.

FIG. 5 is a perspective view showing a mobile phone, a battery pack, and a battery cover.

FIG. 6 is a perspective view showing a state where the battery cover is attached to the mobile phone.

FIG. 7 is a perspective view of a battery pack compatible with a dry battery.

FIG. 8 is a perspective view showing a battery pack and a battery cover.

FIG. 9 is a perspective view showing a mobile phone, a battery pack, and a battery cover.

10 is a cross-sectional view taken along the line A-A ′ in FIG.

FIG. 11 is a sectional view taken along the line B-B ′ in FIG. 9.

FIG. 12 is a perspective view showing a dry battery and a battery cover.

FIG. 13 is a perspective view showing a mobile phone, a dry battery, and a battery cover.

14 is a sectional view taken along the line A-A ′ in FIG.

15 is a sectional view taken along the line B-B ′ in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile phone 2 Power supply installation part 11,111 Battery cover 12 Installation surface 13 Electrode terminal 14,114 Battery installation recess 15 Engagement recess 16 Positioning protrusion 17 Terminal 18 Rubber packing 119 Relief recess 120 Connection terminal 220 Dry battery 21,221 Packed battery 22 Engagement projection 23 Positioning recess 24, 25 Terminal group 224 Discharging terminal 225 Charging terminal 226 Trapezoidal section

Claims (1)

[Claims] 1. A battery pack in which a plurality of columnar secondary batteries each having both end faces and side faces are arranged side by side so that the side faces are adjacent to each other. A battery pack characterized in that a raised trapezoidal portion is formed on the side surface of the battery pack corresponding to the above, and a charging terminal is disposed in the trapezoidal portion.