JPH04105521A - charging device - Google Patents

Abstract

PURPOSE:To charge all charging loads in parallel by providing selecting means connected to charging means and charging loads to time-sequentially conduct selectively the loads of the number corresponding to capacity of the charging means of the loads with the charging means. CONSTITUTION:Storage batteries BT1, BT2,..., BTn are intended to be charged in parallel by using a power source circuit 13 having capacitor for charging one storage battery BT. Since the circuit 13 has a capacity for charging only one battery BT, an equivalent operation to a charging operation for charging in parallel the batteries BT1-BTn is realized by time-sequentially switching the batteries BT1-BTn connected with the circuit 13. Thus, n pieces of the batteries BT1-BTn can be apparently charged in parallel.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a charging device that charges a plurality of charging loads in parallel.

Conventional Technology There are electronic devices, such as teller's machines and automatic teller machines used in banks, that can cause major disruptions to business operations and disrupt social life if they stop functioning due to a power outage. Such electronic equipment is equipped with a storage battery, and the storage battery is charged during a power-on period in preparation for a power outage. FIG. 4 is a block diagram showing the configuration of a first conventional charging device 1 that performs such charging. The charging device 1 includes a plurality of storage batteries BTI, BT2, .
It includes a power supply circuit 2 that outputs a predetermined voltage to BTn (indicated by the reference symbol BT when collectively referred to), and a backflow prevention circuit 3 such as a diode connected to a connection line between the power supply circuit 2 and each storage battery BT. Consists of. The charging device 1 having such a configuration charges each storage battery BT in parallel.

This charging device 1 requires the ability to charge, for example, n storage batteries BT in parallel, which increases the size and cost of the power supply circuit 2.

Therefore, when a power supply circuit 2 is provided for each storage battery BT as shown in the second conventional power supply device 1a in FIG.
It is sufficient to correspond to T, and it is possible to downsize and reduce the cost of each power supply circuit 2, but a power supply circuit 2 is required for each storage battery BT, which increases the number of parts and causes an increase in cost. Become.

Problem to be Solved by the Invention As shown in C1 above, this conventional chair also leads to an increase in the size of the structure or an increase in the number of parts, resulting in an increase in cost.

An object of the present invention is to solve the above-mentioned technical problems and provide a charging device with a simple configuration.

Means for Solving the Problems The present invention provides: one or more charging loads to be charged; a charging means having the ability to charge a number of charging loads smaller than the number of the plurality of charging loads; The charging device is characterized in that it includes a selection means connected to the charging load, selecting a number of charging loads corresponding to the capacity of the charging means from among each charging load, and sequentially conducting with the charging means over time. .

Effect As described above, according to the present invention, one or more charging loads and charging means are connected to each other by the selection means. When the charging means has the ability to charge a number of charging loads smaller than the number of connected charging loads, the selection means selects a number of charging loads corresponding to the capacity of the charging means from among each charging load. The loads are selected and time-sequentially brought into conduction with the charging means over the entire charging load. Therefore, the charging means is momentarily connected to a charging load corresponding to the above-mentioned capacity to charge it, and since charging loads corresponding to the above-mentioned capacity are selected sequentially over all the charging loads, all charging loads can be charged in parallel.

Embodiment FIG. 1 is a block diagram illustrating the configuration of a charging device 11 according to an embodiment of the present invention. The charging device 11 is a storage battery B that is installed in each electronic device 12 such as a plurality of teller's machines and automatic teller machines that are installed in banks, for example.
T1. It is intended to charge BT2°BTn in parallel using a power supply circuit 13 having the ability to charge one storage battery BT. The power supply circuit 13 includes each storage battery BTI to BTn and PNP type transistors Q11 and Q2.
1. . . , are connected in parallel via Qnl.

The base of each transistor Qll-Qnl is connected to a resistor R11.
, R21, -, and Rnl, respectively, and the collectors are connected to the positive electrodes of each of the M batteries BTI to BTn.

The base of each transistor Qll to Qnl is a resistor R12,
R22, .=, NPN type transistor Ql via Rn2 2. Q22. .=, is connected to the lid of Qn2, and their emitters are grounded.

Each transistor Q12. −． The base of Qnl is resistor R
13, R23, -, and Rn3 in parallel to the latch circuit 14. The latch circuit 14 includes an external control device 15 including, for example, a microprocessor, and the transistors Ql 2. Q22. −=, Qn2
n-bit control data Dj regarding 0N10FF control of
, (i=1,2°n) are output. The control device 15 includes a data output section 16 that outputs the control data D1 to the latch circuit 14, and a timer 17 that determines the output timing of the control data.

FIG. 2 is a flowchart explaining the operation of this embodiment, and FIG. 3 is a flowchart illustrating the operation of the present embodiment, and FIG.
, n). In this embodiment, since the power supply circuit 13 has the ability to charge only one storage battery BT, the storage batteries BTI to B to which the power supply circuit 13 is connected
By switching Tn sequentially in time, each storage battery BTI~B
This realizes an effect equivalent to the effect of charging TJI in parallel.

In step a1 of FIG. 2, the control device 15
The control data D1 shown in is outputted from the data output section 16 to the latch circuit 14, and the timer 17 is activated in step a2. In the control data DI, only the bit B1 corresponding to the transistor Q12 is "1" and the remaining bits B2 to Bn are r□
, when this control data D1 is output from the latch circuit 14, the base of the transistor Q12 becomes high level based on the control data D1 in step a3, and the bases of the remaining transistors Q22 to Qn2 are set to low level. Ru. As a result, only transistor Q12 becomes conductive, and the base of transistor Qll is switched from a high level to a low level.

Therefore, transistor Qll becomes conductive, and power supply circuit 13
The storage battery BTI is charged. The bases of the remaining transistors Q21-Qnl are at a high level, and the corresponding storage batteries BT2-BTn are not being charged.

In step a4 of FIG. 2, the control device 15 determines whether or not a predetermined time T1 has elapsed. If it has not elapsed, the control device 15 returns to step a3, and the transistors Q12, Q22. -,Q
Continue the oN, tlX and OFF states of n2. That is, during the time T1, the storage battery BTI is charged. The timer 17 measures time T1, and when the judgment in step a4 becomes affirmative, the process moves to step a5, the timer 17 is turned off, and in step a6, the variable i is incremented by +1.
Return to step a1.

At this time, in step a1, control data D2 shown in FIG. 3(2) is outputted from the data output section 16 to the latch circuit 4. In the control data D2, only the bit B2 corresponding to the transistor Q22 is "1", and the remaining bits B1, B3 . ..., Bn is "0". Therefore, when this control data D2 is output from the latch circuit 14, only the transistor Q22 becomes conductive in step a3.
Only transistor Q21 becomes conductive. As a result, only the storage battery B T 2 is charged by the power supply circuit 13 . As described above, this charging period is the time T1 measured by the timer 17.

Thereafter, the process is repeated in the same way, and when charging the storage battery BTn, the control device 15 outputs the control data Dn shown in FIG. 3(3). In the control data Dn, only the bit Bn corresponding to the transistor Qn2 is "1", and the remaining bits are all "0".

In this way, by using the power supply circuit 13 capable of charging one storage battery BT, n storage batteries BTI to B can be charged.
Charging can be performed in parallel to Tn.

According to the embodiment described above, the power supply circuit 13 only needs to have the ability to charge one storage battery BT, and the configuration and capacity of the power supply circuit can be suppressed compared to the conventional example, and the configuration can be made smaller. and cost reduction.

In the embodiment described above, the power supply circuit 13 was set to have the ability to charge only one storage battery BT, but as another embodiment, the power supply circuit 13 was set to have the ability to charge only one storage battery BT.
The setting may be such that it has the ability to charge m storage batteries BT in parallel, which is a smaller number than BTn. In this case, the control data output from the control device 15 is
This is data for appropriately selecting m arbitrary storage batteries BT from among ~BTn. In such an embodiment, the power supply circuit 13
Although the capacity of the power supply circuit 13 of the embodiment described above is larger than that of the power supply circuit 2 of the conventional example shown in FIG. It is something that can be achieved. Also, in any of these embodiments, the power supply circuit 13 is connected to one storage battery B.
Alternatively, only T may be charged.

In the configuration of the embodiment shown in the first diagram, each storage battery BTI
The configuration for sequentially selecting and charging BT n is not limited to the control device 15 and the latch circuit 14, but also includes the transistors Q12. Q22. ..., sequentially conducts Qn2/
' Any configuration is sufficient as long as the transistors Q12 to Q12 are cut off.
Qn2 may be turned on/off sequentially.

Effects of the Invention As described above, according to the present invention, the charging means is momentarily connected to and charges a charging load corresponding to the above-mentioned capacity, and at the same time, a number of charging loads corresponding to the above-mentioned capacity are sequentially connected to the charging load corresponding to the above-mentioned capacity. Since the charging load is chosen over all charging loads, all charging loads can be charged in parallel. In other words, it is possible to reduce the size of the charging means and reduce costs.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the structure of a charging device 11 according to an embodiment of the present invention, FIG. 2 is a flowchart explaining the operation of this embodiment, FIG. 3 is a diagram explaining control data D1, and FIG.
This figure is a process diagram of the first conventional example, and FIG. 5 is a process diagram of the second conventional example. 11...Charging device, 12...Electronic device, 13...
Power supply circuit, 14-latch circuit, 15...control device, 17
...Timer, BTI~BTn-Storage battery agent Patent attorney Number of strokes Keiichi Figure Figure

Claims (1)

[Claims] One or more charging loads to be charged; a charging means having the ability to charge a number of charging loads smaller than the number of the plurality of charging loads; and a connection between the charging means and each charging load. What is claimed is: 1. A charging device comprising: a selection means that selects a number of charging loads corresponding to the capacity of the charging means from among the charging loads and sequentially connects them to the charging means over time.