JPH071729Y2 - Rechargeable battery pack structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a rechargeable battery pack structure used particularly in electronic equipment using AA batteries.

[Conventional technology]

When rechargeable batteries were incorporated in electronic devices instead of dry batteries, the same number of rechargeable batteries as the pack structure was used. Then, when a rechargeable battery is installed, a charging electrode terminal is provided in a part of the packing structure so that the rechargeable battery can be charged, and charging that flows through the charging resistor provided in the internal circuit of the electronic device. It was a mechanism to charge by flowing an electric current to the charging electrode terminal.

[Problems to be solved by the invention]

In the case of the conventional rechargeable battery pack structure, the number of dry batteries used and the number of rechargeable batteries are the same, so there are protective electrical elements such as charging resistors and temperature fuses and current fuses inside the pack. There is no space to store,
It was necessary to provide it inside the electronic device. For this reason, since a charging resistor or the like is mounted on the circuit board or the like in the device, the circuit board area becomes large, which is disadvantageous for downsizing electronic devices. Further, in order to prevent heat generation due to the charging / discharging current of the rechargeable battery, the current fuse and the temperature fuse are mounted in the same manner, which causes a problem that the cost of the electronic device increases.

[Means for solving problems]

The rechargeable battery pack structure of the present invention is a rechargeable battery pack structure in which a plurality of rechargeable batteries that can be replaced with a predetermined number of dry batteries are built into the pack. A space portion is formed inside by arranging a smaller number of the rechargeable batteries than the predetermined number, an electric element is arranged in the space portion, and the electric element is an electrode of the rechargeable battery. It is characterized in that it is connected to the terminal.

〔Example〕

 Hereinafter, the present invention will be described with reference to examples.

FIG. 1 shows an embodiment of the present invention, 1 is a rechargeable battery having the same shape as an AA battery, 2 is a fixed frame for making the rechargeable battery into a pack shape, 3 is a dummy battery, and the inside of the dummy battery is A charging resistor 4 for controlling the charging current and a fuse 5 for losing conduction when an overcurrent flows are inserted. The dummy battery 3 is
In the case of FIG. 1, since the fixed frame 2 is made of plastic, a part of the fixed frame has the same shape as the dry battery. In addition, a space is provided inside, which is used as an insertion space for the charging resistor 4 and the fuse 5. Reference numeral 6 is a positive terminal, 7 is a negative terminal, and 8 is a charging terminal. The wiring method of each member is as shown in FIG.

According to the pack structure of the rechargeable battery of the present invention, as shown in FIG. 1, electric elements such as a charging resistor and a fuse can be inserted in the space for the dry battery. There is no special change to the electronic circuit inside the electronic device incorporated. Further, if the rechargeable battery is short-circuited and an overcurrent flows, the fuse inserted inside the pack melts and the electronic device can be prevented from being damaged. Further, the repair only requires replacement or repair of the rechargeable battery pack, and there is no need to disassemble and repair the electronic device body.

By the way, for example, in the case of the conventional rechargeable battery pack structure shown in FIG. 1, six AA rechargeable batteries are generally used. In other words, the idea is that the battery life can be extended by using the same number of rechargeable batteries. However, in the case of a rechargeable battery, especially a nickel-cadmium battery, the voltage per cell is 12 V, and the discharge characteristic maintains a relatively constant voltage until the end of discharge, as shown in FIG. In the case of the electronic device of this use, if the operation end voltage of one dry cell is set to 0.9 volt, the electronic device will operate if there is a voltage of 0.9 x 6 = 5.4 volts or more. From this, the voltage of the Nitsukado is 1.2V, so it is not possible to use 4 batteries, but if the number of rechargeable batteries is 5, the operating voltage exceeds 5 × 1.2 = 6V. Moreover, the voltage of 6 volts is almost constant for a long time.
As illustrated, the battery life is not significantly reduced.

[Effect of device]

As described above, by using the number of rechargeable batteries smaller than the number of dry batteries to be used, forming a reduced number of dummy batteries, and inserting electric elements such as resistors and fuses inside the dummy batteries as described above. Since it is not necessary to mount an electric element for charging inside the electronic device, the electronic device can be downsized and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a pack structure of a rechargeable battery of the present invention, and FIG. 2 is an electric connection diagram thereof. FIG. 3 is a discharge characteristic diagram of the Nitsukado rechargeable battery. 1: Rechargeable battery, 2: Fixed frame 3: Dummy battery, 4: Charging resistance 5: Fuse, 6: Positive terminal 7: Negative terminal, 8: Charging terminal

Claims (1)

[Scope of utility model registration request] 1. A rechargeable battery pack structure in which a plurality of rechargeable batteries replaceable with a predetermined number of dry batteries are incorporated in a pack, wherein the pack has a terminal capable of conducting to the outside of the pack, and the predetermined number inside thereof. A space is formed inside by arranging a smaller number of the rechargeable batteries, an electric element is arranged in the space, and the electric element is between the electrode of the rechargeable battery and the terminal. A rechargeable battery pack structure characterized by being connected.