JP2003187770A - Battery case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery case which can be employed for a battery of any shape, independent from the orientation of the polarity of a battery. <P>SOLUTION: A power source circuit 13 of a battery case 12 comprises electrodes 4a and 4b which receive a battery 3, an electromagnetic switch 6 which acts in the direction of an arrow C or D in accordance with the orientation of the polarity of a battery to switch a first or a third switch, the first switch 7 and a second switch 8 to switch the polarities of a battery to an output terminal 11a or 11b, the third switch 9 to switch diodes 10a and 10b connected to the electromagnetic switch 6, the diodes 10a and 10b to switch the current flowing into the electromagnetic switch 6, and the output terminals 11a and 11b. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery case used in an electronic device such as a portable electronic device in which a battery is inserted and operated.

[0002]

2. Description of the Related Art In the information society of recent years, electronic devices such as portable terminals, electronic notebooks, cassette players, remote controllers, etc. which are operated by batteries are increasing.

When a battery is inserted into the battery case of such an electronic device, the polarity is designated and displayed and inserted. However, the electronic device does not work because the battery is inserted in the wrong polarity direction. In addition, there was a problem that the battery was destroyed or the electronic device was damaged.

In view of such a problem, in order to depolarize the electrodes of the battery, a current is passed through the wire 1 disclosed in Japanese Utility Model Publication No. 62-198665, for example, as shown in FIG. Diode 2 arranged in a bridge for rectification
Also, a battery box 5 having a built-in electrode part 4 for connecting to the battery 3, storing and holding the battery 3 to supply power, and an actual flat plate 4
For example, with a switch having two circuits provided near one terminal of a battery box so as to switch polarities, which is disclosed in Japanese Patent Laid-Open No. 91058, and which operates in accordance with the difference in shape of both positive and negative electrodes of a battery, A battery box (not shown) configured so that the polarity of the power supply terminal is constant regardless of the polarity of the stored battery has been devised.

[0005]

However, in the means for solving the above-mentioned prior art, in the above-mentioned depolarization of the diode bridge, the current always flows through the diode, and the battery is not used even if the electronic device is not used. Had the problem of exhausting. Also, in the case where a switch that operates depending on the shape of the battery is provided near one terminal of the battery box described later, it corresponds to various battery shapes such as dry batteries, lithium batteries, button type batteries currently used. It was difficult.

The present invention provides a battery case of such an electronic device, whichever shape the battery has, regardless of the direction of the polarity of the battery, as long as both electrodes of the battery are connected to both electrode portions of the battery case. It is also an object of the present invention to provide a battery case in which electronic devices can be reliably operated without passing unnecessary current.

[0007]

In order to solve these problems, the battery case of the present invention is a battery case having a two-pole output terminal for positive and negative electrodes of a battery,
First and second connection terminals for changing the connection between the output terminal and the electrode portions in contact with both electrodes of the battery.
And a switching means, a power means for detecting the direction of the current from the battery to drive the switching means, and a means for interrupting the current from the battery to the power means.

With this structure, the polarity of the output terminal becomes constant regardless of the polarity of the battery housed, and it is possible to provide a battery case in which the battery is not wasted.

Further, a switch that operates in conjunction with the power means is used as the switching means, an electromagnetic solenoid is used as the power means, and a reverse direction is applied to one electrode portion side as a means for interrupting the current to the power means. With a circuit composed of two diodes connected in parallel with each other and a third switching means for switching the diode in conjunction with the power means, the output terminal It is possible to realize a battery case in which the polarity is constant and the battery is not wasted.

Furthermore, if the circuit composed of all or any of the switching means, the power means and the current interruption means is an integrated circuit, the circuit can be simplified and the battery of the present invention can be used. It does not hinder the miniaturization of the electronic device equipped with the case.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are power supply circuit diagrams of a battery case according to an embodiment of the present invention.

As shown in the figure, the power supply circuit 13 of the battery case 12 operates in the direction of arrow C or D depending on the electrode portions 4a and 4b for receiving the battery 3 and the polarity of the battery, and operates the first to third switches. An electromagnetic switch 6 for switching respectively, a first switch 7 and a second switch 8 for switching the polarity of the battery to the output terminal 11a or 11b,
Diodes 10a and 10b connected to the electromagnetic switch 6
Switch 9 and electromagnetic switch 6 for switching
Diodes 10a, 1 for switching the current flowing to the
0b and output terminals 11a and 11b.

First, as shown in FIG. 1, the electrode portion 4a on the A side of the battery case is connected to the positive electrode of the battery 3 and the electrode portion 4 on the B side.
When the battery 3 is inserted so that b contacts the negative pole of the battery 3, the electromagnetic switch 6 operates in the direction of arrow C at that moment, so that the first switch 7 is on the terminal 7a side and the second switch 8 is on the terminal 7a side. A power supply circuit connected to the 8a side is formed, and as a result, a positive current flows through the output terminal 11a and a negative current flows through the output terminal 11b. At this time, at the same time, the third switch 9 interlocked with the electromagnetic switch 6 is switched to the terminal 9a side, so that the diode 10
The current flowing to the electromagnetic switch 6 is cut off by a.

When replacing the battery 3 due to exhaustion of the battery, if the battery is inserted in the same polarity as the above, the electromagnetic switch 6 does not move, and the positive current is applied to the output terminal 11a and the output terminal 11b is the same as above. Negative current flows to.

Next, as shown in FIG. 2, when the battery 3 is replaced due to exhaustion of the battery, the polarity of the battery 3 is inserted in the opposite direction, and the electrode portion 4a on the A side is the negative electrode of the battery 3. To
When the battery 3 is inserted so that the electrode portion 4b on the B side is in contact with the positive electrode of the battery 3, at that moment, the electromagnetic switch 6 is moved to the arrow D.
Since it operates in the direction, a power supply circuit is formed in which the first switch 7 is switched to the terminal 7b side and the second switch 8 is switched to the terminal 8b side to be connected, and as a result, a positive current flows to the output terminal 11a. A negative current will flow to the output terminal 11b. At this time, similarly to the above, at the same time, the third switch 9 which is interlocked with the electromagnetic switch 6 is switched to the terminal 9b side, so that the current flowing to the electromagnetic switch 6 is cut off by the diode 10b.

As described above, the polarities of the output terminals 11a and 11b can always be made constant regardless of the polarity of the battery 3 to be inserted, and unnecessary current to the electromagnetic switch 6 can be cut off. You can

Although the above-described embodiment is an example in which a switch device that is easy to understand is used, this circuit configuration can also be used for an integrated circuit such as an IC chip.
By incorporating the circuit having the above contents in the integrated circuit, the circuit can be simplified, and it does not hinder the miniaturization of the electronic device equipped with the battery case of the present invention.

[0019]

As described above, according to the battery case of the present invention, it is possible to always output a current having a constant polarity from the output terminal regardless of the direction in which the battery is inserted. Therefore, it is possible to provide a battery case in which the battery can be quickly inserted without checking the orientation of the battery when the battery is inserted, and the operation of the electronic device can be reliably performed.

It can also be applied to batteries of any shape.

Further, regardless of the polarity of the stored battery,
It is possible to provide an excellent battery box that does not waste the battery even if it has a circuit for always outputting a current of a constant polarity from the output terminal.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a battery case according to the present invention.

FIG. 2 is a circuit diagram showing an embodiment of a battery case according to the present invention.

FIG. 3 is a circuit diagram showing a conventional embodiment.

[Explanation of symbols]

3 batteries 4a, 4b electrode part 6 electromagnetic switch 7 First switch 7a, 7b, 8a, 8b, 9a, 9b terminals 8 Second switch 9 Third switch 10a, 10b diode 11a, 11b output terminals 12 battery case 13 Power circuit

Claims (5)

[Claims] 1. A battery case having two positive and negative output terminals of a battery, wherein a connection between respective terminals is provided between the output terminal and an electrode portion in contact with both electrodes of the battery. It comprises first and second switching means for switching, a power means for detecting the direction of the current from the battery and driving the switching means, and a means for interrupting the current from the battery to the power means. A battery case characterized by having a circuit. 2. A switch that operates in conjunction with a power unit is used as the switching unit.
Battery case described in. 3. The battery case according to claim 1, wherein an electromagnetic solenoid is used as the power means. 4. A means for interrupting a current to the power means, two diodes connected in parallel in opposite directions on one electrode side, and a third switch for switching the diodes in conjunction with the power means. The battery case according to any one of claims 1 to 3, wherein the battery case comprises a circuit configured by means. 5. The battery case according to claim 1, wherein a circuit composed of all or any of the switching means, the power means and the current interruption means is constituted by an integrated circuit.