JPH05122856A - Power source - Google Patents

Abstract

PURPOSE:To provide a power source in which completely consumed cells out of a plurality of internal cells are solely removed out of an apparatus and a usable cells are always driven and which can be easily continuously operated with the plurality of cells for a long period. CONSTITUTION:A plurality of internal cells 2, 3 are so connected as to be solely alternately used. The power source comprises a voltage detector for always measuring a voltage of the using cell, a display unit 5 for displaying consumption of a voltage of the using cell measured by the detector, and a changeover switch 4 for switching to a charged cell except the consumed cell of the plurality of cells. Since the consumed cell can be effectively removed, the usable cell can be always driven and the cells can be solely replaced, a life of the one cell can be effectively utilized, and the power source can be easily continuously operated with the plurality of cells for a long period of time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for driving a device body of a portable device using a battery.

[0002]

2. Description of the Related Art The above portable equipment is usually convenient to carry and can be loaded with a battery inside the equipment so that it can be used anywhere, or an external battery can be used as a power supply device. It is connectable.

Conventionally, a plurality of built-in batteries as a power supply device of this kind are connected in parallel, or an external battery is also connected in parallel with them so that the operating time of the batteries is long-lasting. Was becoming. That is, as shown in FIGS. 3 and 4, the plurality of batteries 2 and 3 or external batteries built in the device body are all connected in parallel, and all the batteries are used when the device is used. Were becoming exhausted at the same time.

[0004]

However, according to the conventional configuration as described above, since the plurality of built-in batteries and the external battery are all connected in parallel as shown in FIG. 3, all the batteries are consumed at the same time. To do. I don't know which battery is exhausted when the battery is exhausted by using the device. In addition, when any one battery is replaced, other exhausted batteries are charged, so that all the batteries must be replaced quickly, or the battery life will be disadvantageous unless they are replaced. Further, in order to prevent it as shown in FIG. 4, if diodes 14 and 15 are inserted in the middle, a voltage loss corresponding to the diodes occurs, which is disadvantageous in battery life. There has been a problem in that in order to effectively use the life of one battery and to perform continuous operation for a long time, complicated operations must be performed.

In view of the above-mentioned conventional problems, the present invention makes it possible to easily perform continuous operation for a long time by using a plurality of built-in batteries, reliably display the exhausted batteries, and switch the batteries to be used. It is intended to provide a power supply device capable of continuously operating for a long time with easy operation so that a battery can be independently replaced.

[0006]

In order to solve the above-mentioned problems, the power supply device of the present invention is a device in which a plurality of built-in batteries are connected so that they can be used independently and alternately. Different from the voltage detection circuit that can always measure, the display device that displays the consumption of the voltage of the used battery measured by the voltage detection circuit outside the device, and the consumed battery among a plurality of batteries due to the display. And a changeover switch capable of changing over to a charged battery.

[0007]

According to the present invention, since the internal battery of the device is consumed one by one and the voltage of the battery which is constantly used is measured by the voltage / voltage detection circuit, the battery used by the display device connected to the device is It can be displayed externally that the battery is exhausted, and by using the display, you can switch the battery to the one that is different from the one you are currently using and use the changeover switch Since the battery can be eliminated, the battery can be switched to the usable battery at any time, and each battery can be replaced independently, it is possible to easily perform continuous operation for a long time by using a plurality of built-in batteries.

[0008]

Embodiments of the power supply device of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an external view of a device according to an embodiment of the present invention, and FIG. 2 is a diagram showing a voltage detection circuit inside the device for measuring the voltage of a battery used.

As shown in FIG. 1, the device main body 1 has a battery 2
Also, there is a space in which the battery 3 can be built in, and in the vicinity thereof, there is a changeover switch 4 that allows the user to manually select either the battery 2 or the battery 3 to be used, and in the vicinity thereof, the voltage inside the device 1 is provided. It has an emitting diode 5 (hereinafter abbreviated as LED) as a display device for measuring the voltage of the battery used by the detection circuit and displaying the consumption of the battery outside the device.

In addition, inside the device 1, transistors 6 and 7, a zener diode 8, resistors 9 and 1 as shown in FIG.
It is provided with a voltage detection and display drive circuit formed by 0, 11, 12, and 13. That is, the batteries 2 and 3 are connected via the changeover switch 4 so that they can be used independently and alternately, and further connected to the circuit so that the current flows due to the voltage consumption of the used battery and the LED 5 lights up. ing.

In the device constructed as described above, first, the user inserts the batteries into the charged batteries 2 and 3 to use the device. At that time, the changeover switch 4 is switched to the battery 2 (or the battery 3) in order to determine the battery to be used. Since the circuit inside the device 1 constantly measures the voltage state of the used battery, when the user uses the device 1 and the battery is exhausted, the LED 5 is turned on to display it on the outside to inform the user. Then, if the user switches the changeover switch 4 to the battery 3 (or the battery 2) before the battery 2 (or the battery 3) runs out, the device 1 is driven by the battery 3 (or the battery 2) and continues to operate as it is. Meanwhile, the exhausted battery 2 (or battery 3)
Take out the battery alone, charge another charged battery, or battery 2 (or battery 3), and insert it into the battery space of the device 1 from which the user has taken out, and continue the same procedure. You can

[0012]

As described above, in the power supply device of the present invention, since the plurality of built-in batteries are connected so as to be used independently and alternately, the voltage of the used battery can be constantly measured by the voltage detection circuit. In addition, the consumption of the used battery can be displayed on the outside of the device, and the display can be used to switch to a charged battery different from the consumed battery among the plurality of batteries with the changeover switch. The battery life can be effectively utilized, and each battery can be replaced independently, so that each battery can be replaced independently. It enables operation.

[Brief description of drawings]

FIG. 1 is an external view of a device including a power supply device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a power supply device according to an embodiment of the present invention.

[Figure 3] Conventional battery connection diagram

FIG. 4 is a battery connection diagram in which a diode is inserted in the middle of the battery so that it will not be charged even if one battery is replaced.

[Explanation of symbols]

 1 Equipment 2, 3 Battery 4 Changeover Switch 5 Issuing Diode (LED) 6, 7 Transistor 8 Zener Diode 9, 10, 11, 12, 13, Resistor

Claims (1)

[Claims] 1. A voltage detection circuit, which comprises a plurality of built-in batteries connected to each other so that they can be used alternately, and the voltage of the batteries in use can be constantly measured, and the voltage detection circuit. It is equipped with a display device that displays the consumption of the voltage of the used battery outside the device, and a changeover switch that can switch to a charged battery different from the exhausted battery among a plurality of batteries by the display. And power supply.