JPH11273647A - Battery power device and battery case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent heating of batteries and the leaking of liquid even if new and old batteries are used in combination. SOLUTION: In Figure (A), a battery power device has rated 1.5 V batteries 1-4, the batteries 1, 3 being connected in parallel with the batteries 2, 4, and the pairs of batteries being connected in series with each other. In the case of such a connection, even if the battery 4, for example, is an old battery whose voltage has been decreased, a voltage applied to the battery 4 from the battery 2 does not become 1.5 V or more, so that even if a current in the direction of the arrow in the figure flows from the battery 2 to the battery 4, the battery 4 is not overcharged to prevent heating of the battery 4 and the leaking of liquid. Such a connection is more effective if the batteries 1-4 are alkaline batteries which are small in internal resistance. Battery power devices having connections shown in Figure (B), (C) can produce similar effects.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a battery power supply and a battery case.

[0002]

2. Description of the Related Art As a battery power supply device for obtaining a higher voltage and a higher capacity by using a battery as a power supply, for example, the one shown in FIG. 4 can be considered. In this figure, reference numerals 1 to 4 denote batteries each having a rating of 1.5 V, and batteries having a rating of 1.5 V are connected in series and connected in parallel.

[0003]

However, when new and old batteries are mixed in the used batteries, for example, when only the battery 4 is an old battery and its voltage is reduced to 0.5 V, for example. In this case, a voltage of 2.5 V is applied to the new battery 3, and this battery 3 is overcharged by a large current in the direction of the arrow. It has been found that there is a problem to be solved that causes leakage. In view of such problems to be solved, an object of the present invention is to provide a battery power supply device and a battery case that do not generate battery heat or leak even when old and new batteries are mixedly used.

[0004]

Means for solving the problems are as described in the claims.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described. However, this is merely an exemplary embodiment adopted based on the present invention, and the present invention will be described based on matters unique to the embodiment. Therefore, the technical scope of the present invention should be determined based on the matters stated in the claims and matters substantially equivalent to the matters.

The embodiment shown in FIGS. 1A to 1C is a battery power supply device in which a plurality of batteries are connected in parallel and they are connected in series. When described in detail with reference to FIG. 1A, reference numerals 1 to 4 denote batteries each having a rating of 1.5 V, and batteries 1 and 3 and batteries 2 and 4 are connected in parallel, respectively, and they are connected in series. . In the case of such a connection form, for example, even if the battery 4 is an old battery whose voltage is decreasing, the voltage applied from the battery 2 to the battery 4 is 1.
Since the voltage does not exceed 5 V, even if a current flows from the battery 2 to the battery 4 in the direction of the arrow in the figure, the battery 4 is not overcharged. No. In addition, such a connection form is more effective when the batteries 1 to 4 are alkaline batteries having a small internal resistance. Also, the battery power supply device having the connection form as shown in FIGS. 1B and 1C has the same effect.

FIGS. 2 and 3 show a battery case 5 in which the above-described connection form can be effectively implemented. In this battery case 5,
A plurality of batteries 1 and 3 and a plurality of batteries 2 and 4 are respectively connected in parallel, and they are connected in series and stored. A movable insulating plate 6 is provided between the series batteries 1 and 2 and between the batteries 3 and 4 in the longitudinal direction of the battery.
Is not more than the height of the positive electrode 7 of the battery, and the insulating plate 6 has a hole 8 through which the positive electrode 7 passes (or a notch).
Is provided on one side of the insulating plate 6,
A metal piece 10 extending between the poles 9 is provided. The metal piece 10 may have a substantially flat plate shape or a linear shape as shown. The center of the metal piece 10 is inserted and locked in a groove 12 formed in the lower surface of the base of a substantially V-shaped locking piece 11 formed at the center of the upper end of the vertical portion 6a of the insulating plate 6 for preventing the battery from floating. Both ends of the metal piece 10 are inserted and locked in holes (not shown) near both sides of the horizontal portion 6b of the insulating plate 6.

More specifically, the battery case 5 is a groove-shaped insulating case, and at one end thereof, a metal contact piece 13 to which the positive electrode 7 is in common contact is arranged. A hole 14 (or a concave portion) for accommodating the + pole 7 is formed. A metal contact piece 15 in the form of a coil spring is arranged at the other end of the battery case 5, and the negative pole 9 contacts the metal contact piece 15. The metal contact pieces 15 are connected to a common metal drawing piece 16. A horizontal portion 6b slightly wider than the vertical portion 6a is formed at the lower end of the insulating plate 6, and both sides of the horizontal portion 6b are slidably fitted into grooves 17 formed at the lower end of the inner surface of both sides of the battery case 5. Have been. The insulating plate 6 is movable so that the batteries 1 to 4 can be easily attached to and detached from the battery case 5. A substantially V-shaped locking piece 18 is also formed at the center of the other end of the battery case 5 to prevent the battery from floating.

FIG. 2 (A) shows a case where batteries 1 to 4 are to be stored properly. The negative poles 9 and 9 of batteries 1 and 3 contact metal contact pieces 15 and 15 and + Pole 7,7
Contacts the metal contact piece 13, the positive poles 7, 7 of the batteries 1, 3 pass through the holes 8, 8 of the insulating plate 6, commonly contact the metal piece 10, and the negative poles 9, 9 contacts the metal piece 10 in common, the batteries 1 and 3 and the batteries 2 and 4 are respectively connected in parallel, and they are connected in series. When the batteries 2, 3, and 4 are stored as shown in FIG. 2A and the storage direction of the battery 1 is reversed from the illustrated direction, the negative pole 9
Does not contact the metal piece 10 due to the interposition of the insulating plate 6. Therefore, since the batteries 1 and 3 are not loop-connected in the forward polarity direction, there is an advantage that the danger of heat generation of the batteries 1 and 3 is avoided. The same applies to the case where the batteries 1, 2, and 4 are housed as shown in FIG. Note that, even when the battery 2 and the battery 4 are reversed in the direction opposite to that in FIG. 2A, the negative pole 9 does not contact the metal contact piece 13 located at the back of the hole 14.

[Brief description of the drawings]

1 (A) to 1 (C) show connection diagrams of batteries, respectively.

FIG. 2A is a perspective view of a battery case. FIG. 2B is a perspective view of the insulating plate.

FIG. 3A is a longitudinal sectional view of FIG. 2A, and FIG.

FIG. 4 is a diagram showing a connection configuration of a battery according to a conventional example.

[Explanation of symbols]

 1-4 battery 5 battery case 6 insulating plate 7 + pole 8 hole 9-pole 10 metal piece

Claims (3)

[Claims] 1. A battery power supply device in which a plurality of batteries are connected in parallel and they are connected in series. 2. The battery power supply according to claim 1, wherein the battery is an alkaline battery. 3. A battery case in which a plurality of batteries are connected in parallel and stored in series.
A movable insulating plate is provided in the longitudinal direction of the battery between the series batteries, and the thickness of the insulating plate is set to be equal to or less than the height of the positive electrode of the battery, and the insulating plate is provided with a hole or notch through which the positive electrode passes,
A battery case in which a metal piece is provided on one side of an insulating plate so as to extend between negative electrodes of parallel batteries.