JPS605742A - Charger - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention provides a method for once setting a plurality of rechargeable batteries.
This invention relates to a charger that charges individual batteries 1 by sequentially supplying charging current, and relates to display methods before, after, and during charging.

(Example) Conventional technology: In chargers that charge multiple rechargeable batteries one after another (individually), conventionally commercially available ones charge only two individual batteries (two pairs of window display means (general)). It has a dual-source diode), and the battery before charging and the battery after charging (both displays are off).

By the way, these chargers! =, of the batteries set, the uncharged battery and the charged battery are present at the same time (-, so these two batteries cannot be distinguished.

C2 is particularly inconvenient when an unspecified number of people use this type of charger to charge the battery.

4. Purpose of the Invention The present invention has been made in view of the problems of the prior art as described above, and by changing the display means before, during and after charging, it is possible to easily identify the battery before and after charging. The purpose is to make people

(D) Structure of the invention Simultaneous C2 A device in which a plurality of rechargeable batteries are connected in parallel and charged by sequentially supplying charging current to each battery (=
Display means for indicating the charging status of the battery! The display means shows different indications before charging the battery, during charging, and after charging is completed, so that it is possible to check at a glance which state each battery is in (or whether there are two).

N) Example: Hereinafter, an example of a charger that can simultaneously charge six rechargeable batteries (two sets) of the present invention will be described in detail.

(1) is a power supply circuit section that inputs a commercial AC power supply (2), rectifies it, and outputs direct current, and a charging current output section (V
B) and a constant voltage output section (VOO).

(3), (4), and (5) are battery connection parts A (6) and B (7).
), O(81+2 each detachable (2 connected batteries A,
B, O, and the battery connection parts A(6), B(7), 0
The anode side of each of (8) is a switch circuit A (9), B1
11), a charging circuit (12) connected to the charging current output terminal (VB) of the power supply circuit section (1) via O1'111
1 (2 connected.

031, [14+, (1ω is the battery connection part A (6)
, B(7), 0(8) anode side 1: Connected and set battery voltage is detected and inverter A(161, B(
These are battery detection circuits A, B, and 0 that output 171% COυ. (I!J, ■, Qυ are the inverter A (16),
Buη, O (l The output of the mallet is reset by each reset section (R1),
Incorporate into (R2), (R5) tr7 leaf 7o yfu A, B, Of al. (22), f231゜QIJ
)! Invar 9 A (16), R07),
cae output and the free 2 block A (19, Bc
! ■, output part of f211 (Q? +), (Q?2
), (QI'5) NOR circuit section A that inputs the outputs from (QI'5)
,B,0. (2, CI!61. (27))i
Said NOR circuit section A+221. B(231, Cl24
1) Output and counter output section (QC1) (QC2)
(QOiS) outputs are taken in by A N D circuit sections A1B and O. [291f3t)cell is the output part (Qc + )(Qc 2)(
The output from Qa 5) and the output from the charging completion detection circuit section C (21θ) connected to the charging circuit 0z are taken in and output from the charging circuit 7
Sect part of Buflotub ACII, B■, 0f21
JF is the AND circuit section that outputs to S1), (S2), and (S3). (3 thirst, C34), C3 blocked said AN
D circuit parts A (c), B (26), o (oscillation circuit part t connected to the output from η and the constant voltage output part (vac))
(4) ANDNO circuit section H, I that takes in the output from
It is.

C(7) is a three-terminal input OR circuit section, and the AND
Take in the outputs of circuit sections AI2ω, BC1!5), OI2'r). 2 is a NOR circuit section which takes in the output of the OR circuit section D [37] and the output of the oscillation circuit section (G), and its output is connected to the clock pulse section (CP) of the counter screen and the charge completion detection. The signals are output to the reset section (R8T) of the circuit section. ((0, (4υ is the AND circuit part AC331, B, C1 (1, ○G!1
9 outputs and the flip-hub float 0 bells 1. BC! These are eight OR circuit sections A, B, and O that take in the outputs of t) and 0f21). (43 (43 (14) is the buffer inverter A, B, (3) that inverts the output of the OR circuit section h(39, B(IQ, 0(I).
s f (61 (47) is the constant voltage output section (Vaa) and the buffer inverter h (1?), B (43), c
Light-emitting diodes A, B, and O are inserted between H and H.

Next, the operation of the above circuit will be explained.

When the commercial AC power source (2) is connected to the power supply circuit section (1), each circuit section is reset to the following state.

Battery detection circuit section A (131, BG41.0051...
(Two output charging completion detection circuit section 03...L output terminal open output section (Qa 1), (QC2), (QC
5)...Co-C dual output flip-flop (19, Bρ(l, 01211 output part (Q?1), (Qr2), (Q?!S) -...Co-CL output inverter Aα61%B surface, C is H output, N
OR circuit section A (221, BCI!3), 014)):
! L ratio output ANDNO circuit section 251. Bi12), 0
(271 becomes L output, switch circuit section A (9), l
1l), 0011 is the AND circuit section A (251, Bi
The off state is maintained by the L output of 12) and 0 (27), and the charging current output section (vn
) no current flows. On the other hand, the oscillation circuit section (361) is oscillating, and the OR circuit section D (37) has an L output, so the counter (clock pulse section in the figure (C oscillates 0' after CP)) pulse train (Figure 2 (71) ) is input (see Figure 2 (a)). Also, AND circuit section Gea), HQ4
), r Since C351 is L output, OR circuit part Ac (
L B(iQ, o(411 also L output te, high 77
Ear Bar 9 AC421%B (43), O (141
is H output fx tute light emission 3' a:t -F
, B (II, O (41) are both off.Then, the output of the counter I281 is output to the output section (QOl
) (QO2) (QO3) becomes the order C: 'H output, and this is repeated, but the battery A (3), B (4)
, Of! 11 are not connected, the output sections (Qcl), (QO2), and (QOI) sequentially become H outputs.
1, OC), 0, DI291, EG ■, y Output C of C311; no change, eventually light emitting diode A f45)
, B fl[+), and O(4?) do not change.

Now, if batteries A(3), B(4), and O(51) are connected in this order to battery connection part Af61. B(7), O(831m), first battery detection circuit part AG31 becomes H. output (see Figure 2 (force)), and inverter Aαe becomes L.
Since the flip-flop Afll remains at the L output (see Figure 2 (G)), the NOR circuit section A (22
1 results in H output. And the output section (Q
o When 1) becomes H output (point P in Figure 2 1!71)
1), AND circuit section A (2 warms up, becomes H output, switch circuit section A (9) becomes on state, and the above-mentioned battery A (3
) is supplied with current from the charging current output section (VB) (section T1 in FIG. 2 IM). At the same time, AND circuit section GC
The output C2 of 13 is an oscillation pulse train output from the oscillation circuit section (g), and the output of the OR circuit section AC31 also becomes an oscillation output. Therefore, the light emitting diode A (451 is the oscillation circuit section (
) (see section T4 of FIG. 2 V)). At this time, the OR circuit section D (7) becomes an H output, the NOR circuit section D (to) closes its gate and becomes an L output, and the oscillation pulse train from the oscillation circuit section (G) is no longer input to the counter. Counter slurry output section (Qal
) maintains the H state, and charging of battery A (3) continues. Note that batteries B (4) and 0 (5) are connected to battery connection parts B (7) and O
(8) If c is connected, battery detection circuit B (141,
The output of 0051 becomes an H output, and the NOR circuit section B (23
1, at2 (J output is H output, but the battery A (3
) is charging, the counter output section (QOI) or H
Since the output is held, the output section (QO2), (qas) cannot become an H output, and therefore the ANDNO circuit section 2f9.0 (
27) output does not become H output. That is, battery B (4),
No current is supplied to O(5)1m, and the light emitting diode B(4[9,O(4?)) also remains off.

As the charging of the battery A (3) progresses and reaches a specified voltage (-, the output of the charging completion detection circuit section (33) becomes an H output (point P4 in Fig. 2 17)).
Since only the output from the AND circuit section LI becomes an H output, only the output from the AND circuit section LI becomes an H output.
SL), and the output of its output section (Q10) changes from L output to H output (point P2 in Figure 2)). For this reason N
OR circuit section A1221 has L output, AND circuit section A (c)
also becomes an L output, and the switch circuit section A (9) is in the off state (
When the voltage reaches 2 (point P5 on the $2 diagram), charging of battery A (3) stops.

On the other hand, the output of the AND circuit section GC113 becomes an L output,
Unlike before connecting battery A (3), flip-flop A (
Since the output of the output section (QF1) of No. 19 is H output, O
The output of the R circuit section A (3) becomes the ■ output, and the output of the buffer inverter A (421 becomes the L output. Therefore, the light emitting diode A (451) stops blinking and becomes lit (see Figure 2 (force section T7). ).At this time, at the same time, OR circuit section Dpη
The output becomes the L output, opens the gate of the NOR circuit section D (to), and the oscillation pulse train is input to the counter (c) (
Point P5 in Figure 2 (a)). At the first pulse after the start of input, the H output of the counter transfers from the output part (qc +) to the output part (
The state shifts to Q(1+2), and the charging completion detection circuit section 04 is reset to become an L output. Note that the output section (QOI) of the counter f281 and the input section (Sl) of the flip-flop A (QF 1 ) change;
Since there is no change in the input to the reset section (R1) of α9, the output from the output section (QF1) does not change. Therefore, the switch circuit section A(9) and the light emitting diode A0ω maintain the fully charged state.

The next C2 counter 12810) H output is the output section (Qo
1) to the output section (Qo2), there are two Cs. Since battery B (4) has already been connected to battery connection section B (7), the output of NOR circuit section B (c) is an H output. Therefore, the output of the output section (QQ2) becomes H output layer: If the output of the AND circuit section B26) becomes H output, the battery A
As in case (3), battery B (4) becomes charged,
Light emitting diode 1: I((!) starts blinking.At this time, light emitting diode A (4) is lit, indicating that battery A (3) is fully charged, and light emitting diode O (4?) is off and battery C is lit. Since (5) indicates that the battery is not yet charged, the status of each battery can be determined at a glance.

When all batteries are fully charged, start from battery A (3), battery B (4), and battery 0 (5).
), (4), and (5), the outputs of the battery detection circuit sections 0, ■, and +151 all become L outputs, and the output section (Q?1) (QF2) of the four pupils υ of the flip-flop 09 (
Q? 5) Since the output is 7z'L, all of the light emitting diodes (11i) (47) that were lit are turned off.

Unless the batteries (3), (4), and (5) are disconnected, the output of the flip-flop (19 (2 ■ circle) (Q?+) (Q?
2) ((15) maintains the H output and the light emitting diode fa f4m (47) continues to maintain the lighting state. Also, the output of the NOR circuit section 122) f23) f24) maintains the L output, so the counter 1281 output section (Qo 1
) (Qc 2) Even if (qc 11) becomes an H output (2), the switch circuit section f911010B does not turn on. Therefore, the batteries (31 (4) (5) do not become overcharged).

If there are three or more batteries to be charged and it is desired to charge them continuously, the batteries can be replaced and charged one by one after charging is completed.

If battery A (3) to battery 0 (5) are now fully charged Z
think. When battery B (4) is replaced with an uncharged battery,
Because battery B (4) was removed once, the flip flop B
The output section (Qv2) of OI becomes an L output, and the NOR circuit section At221. Bc! 3), 0 (goods)'s outgoing husband tr
r,, H, L output. Furthermore, the outputs of the two AND circuit sections A (c) and O (27) are output from the counter (281 output section (Q)
C1) (Qc 5)c are both L outputs regardless of whether they are connected or not. Further, the output of the AND circuit section Bib) is also an L output unless the output section (Qo2) of the counter is an H output. However, to the AND circuit circuit section), BC21'9.00? ), the gate of the NOE circuit section Dζ is open until the logical sum of ) becomes H, and the oscillation circuit section! : The oscillation pulse from 1G> continues to be output by counter r281 (two people). However, the output part (QC2
) becomes an H output, the output of the AND circuit section BAG becomes an H output, the output of the OR circuit section DC37) becomes an H output, the output of the NOR circuit section) becomes an L output, and the output section of the counter (
The output of Qo2) maintains the H output and the newly inserted battery at the position of battery B (4) (2) enters the charging state. When the charging of this battery is completed and the charging completion detection circuit unit 021 outputs H, Flip-flop B(1) is set again, and its output section (QF2) becomes an H output.This output section (Q22)
) and battery detection circuit B (L41).
When the circuit section B performs this operation, its output becomes an L output, and therefore, the output of the counter f28) (AND circuit section B Q6) becomes an L output, and charging of the battery Q) is stopped. After this, the counter 1281 continues to output the respective output parts CQO1)(Q(+2)(QCl) cyclically (two H output and L output repeatedly, but the flip 71f
Output part (Q? 1) of f7 block (llc!If21)
(Q72) Charging will not start again unless (Q?5) is reset.

The above operation is performed when replacing batteries after charging is completed (I explained that there are two batteries, but 1, for example, while battery 0 (5) is being charged (2 batteries B).
Even if battery (4) is replaced, the same operation as described above will be performed after charging of battery 0 (5) is completed.

(f) Effects of the Invention As described above, the present invention provides a battery that charges a plurality of batteries that can be charged simultaneously (by connecting them in parallel and sequentially supplying charging current to each battery). A display means is provided to indicate the state of charge of the battery, and the display means shows different indications before charging the battery, during charging, and after charging is completed.
Any number of people can check the status of each battery that has been set inside the charger, and even when an unspecified number of people use it, there is no need to worry about confusion and it is possible to charge a large number of batteries in succession.

[Brief explanation of drawings]

Fig. 1 is an implementation circuit diagram of the charger of the present invention, and Fig. 2 is an output waveform diagram of each circuit component in Fig. 1, where the sword is the oscillation circuit section, and (a) is the input section cp% tide of the counter. ) is the output part QOj of the counter, (i) is the output detection circuit part 0 of the counter, and (e) is the output part Q! of the flip-flop A! 'j, (c) is the output part Qti'2 of flip-flop B, and light is the output part Q of flip-flop O? 5, (U is the suite circuit part A, (
Z) is switch circuit part B, (-d is switch circuit part C
%tsu) is light-emitting diode A, li) is light-emitting diode B
1) is the current waveform diagram of the light emitting diode C, (the current waveform of the charging completion detection circuit section.
Display means.

Claims (2)

[Claims] (1) Connect multiple rechargeable batteries in parallel at the same time,
Charging is carried out by sequentially supplying a charging current to each battery (1), and a display means is provided to indicate the state of charge of the battery, and the display means has different displays before charging the battery, during charging, and after charging is completed. A charger made with the one shown. (2) A charger according to item 1 of the patent scope, characterized in that a light emitting diode is used as the display means, and the display is turned off before charging, blinks during charging, and turned on after charging is completed.