JPS605743A - 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 G) Industrial Field of Application The present invention relates to a charger that sets a plurality of rechargeable batteries at once and charges each battery by sequentially supplying charging current. -It is related to

(b) Prior art In a charger that charges multiple batteries individually (in two sequential manners),
Conventionally, the battery you want to charge is connected to a charger (two chargers) in advance.
The method used was to start charging sequentially using a mechanical start switch. For example, if three rechargeable batteries are installed, the first and second batteries are fully charged, and the sixth battery is being charged.
Remove the first and second batteries that have already been charged, and replace them with the new batteries.
It is convenient to supply charging current to a new battery immediately after the charging of the original battery is completed (it is convenient to do this in two steps. However, with conventional chargers, charging can only be done in the following two ways: the 16th battery. Continue charging the batteries, wait for the charging of that battery to be completed, and after charging all the batteries, remove them from the charger, set 6 new batteries at once, and turn on the start switch again.

While charging the 66th battery (remove the 2 fully charged batteries from the charger and add 2 new batteries), immediately turn on the start switch.

This is the method.

However, in the case of No. 1, it is not possible to remove the fully charged battery until all six batteries have finished charging, and the battery cannot be used, resulting in a lot of waste. Also, in the case of 0, the start switch is reactivated while the 6th battery is being charged (0), so there is a risk that the battery will be overcharged.

(c) Purpose of the Invention The present invention has been made in view of the problems of the prior art as described above, and involves charging the set batteries cyclically one by one until all of the set batteries are fully charged. The purpose of this is to completely eliminate the need to operate the conventional mechanical charging start switch.

2) Structure of the invention n rechargeable batteries are connected in parallel, and charging starts from the battery in the first stage, and the batteries in the next stage are sequentially charged, and when charging of the battery to be charged is completed. A detection means for detecting is provided, and after the charging of the charged battery is completed, a charging current is supplied to the next battery, and a newly set rechargeable battery C: nth After the charging of the battery is completed, the charging current Z is supplied (two configurations).
If at least one battery is set in the charger, charge the batteries one after another, and replace the new battery in the position of the battery after charging is completed. This is a charger that continues charging endlessly until all of the preset batteries are fully charged.

N) Example: Hereinafter, the present invention will be described in detail as an example of a charger in which six rechargeable batteries can be set at the same time.

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

(3), (4), (5) are battery connection parts A (6), Br7
>, Of8'll two batteries A are removably connected to each other.
, B, 0, and the battery connection part A(61, B(7),
The respective anode sides of C(8) are connected to switch circuits A(9) and B(
The charging current output section (vn) of the power supply circuit section (1) is connected to the connected charging circuit (13) via the power supply circuit section (1).

G31. (141, Q■ is the battery connection part A (6),
Connected to the anode side of B(7) and 0(8), the voltage of the set battery is detected and the inverter A and B(171,G
(Battery detection circuits A, B, and O output 181 m.
19, Kan, Qll is the inverter A (161, B side,
The output of the Oα barrel is reset by the respective reset units (R1), (R2),
(R3) are flip-flops A, B, and O. CZ, (c), C2 (a) are the inverter A (16
1, Bαη, 0CII output, and the output part (QF 1 ) of the flip-flop Aα9, B (201, 111),
These are NOR circuit sections A, B, and O that input the outputs from (QF2) and (qr5). (2511CO507) is the NOR circuit section A+2, the output of Bt231.0f241 and the output section of the counter (281 (Qc 1) (qc 2)
AND circuit section A1B that takes in the output of (G05),
It is O. C91C (I C3J) is the counter (2
The output from the output section (Qc + ) (QC2) (QC5) of 81 and the front lip flow cup A (11, Br,! East Of2
This is an AND circuit section D% to F which outputs two sets of υ (Sl), (S2), and (S3). C arrogant, 64), C35
) is the AND circuit section Al251. Bf2119.00
A1' which takes in the output from 7) and the output from the oscillation circuit section (36) connected to the constant voltage output section (■○o).
LD circuit part G, R1 engineering.

c'+'r+ is a three-terminal input OR circuit section, and the above A
The outputs of the ND circuit sections A (c), B (c), and O12η are taken in. 1° candle is the OR circuit section DB? ) and the output of the oscillation circuit section (1), and its output is the clock pulse section (OF) of the counter f281 and the reset section (32) of the charge completion detection circuit section (32). R8T) are output respectively.(3■, (10,
(41) is the AND circuit section A (3 circles) J4), 0CA
5 and the output of the flip-flop 9,B(2G,
OR circuit section A, B%C that takes in the output of 0f21)
It is. (42 (43G publication is the end side B of the OR circuit part) (
Ito 0 (balance inverter A that inverts the output of 411
, B, O and t'+. (45(i(an)) The constant voltage output section (VCa) and the puff fine inverter A (12
1, B (4th floor, C04) are light emitting diodes A, B, and 0 inserted between them.

Next (2) The operation of the above circuit will be explained.

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

Battery detection circuit section A [131, BQ41.0 [15)...
- Both L output charging completion detection circuit section C (a... output section (QOI) of L output counter f281, (QC2), (Q
(+5)... Both L output flip-flops A (19, B (201, C circle output parts (Qv1), (Qv2), (Q F S ) -... Both (two output oscillation circuit parts) ...According to the oscillation state, when batteries A (3), B (4), and 0 (5) are not installed (:
(7 ha 9 A (161, B [17), 008
) is U output, NOR circuit section A (23, E 231.02
4) is L output, AND circuit section A (251, B, a (2
n becomes the L output, and the switch circuit section (9), Boo)
, 001) is the AND circuit section A +25), Br2e
, is maintained in the off state by the L output of CCrI,
No current flows from the charging current output section (Vl) of the power supply circuit section (1). On the other hand, the oscillation circuit section (1) is oscillating, and the OR circuit section D (3η is the L output), so the clock pulse section (cp) of the counter (281) and the clock pulse section (cp) of the counter (281) are oscillating. (see Figure 2 (a)). Also, ANDNO circuit section 3 HC (4), IC section is L
Since it is an output, the OR circuit section AC391,B (11,0f
41) is also an L output, and buffer inverters A (42) and B
GI3. c(44) becomes H output and light emitting diode A
(45), B(10, 0 (4η are both off. And the output of the counter is
One of C+ ), (QC2), and (Q(15) becomes (2H output) in order, and this is repeated, but battery A(3)
, B(4), and C(5) are not connected, the output parts (QOj), (Qa2), (QC
5) Even if the H output becomes two in sequence, the AND circuit section AI2 mounted B
12fi), O(2Tl, D 29+, EC(0),
Output between 2 (=no change, eventually light emitting diode Af4
5), B (□lf9.0(4η) display also does not change.

Now, if batteries A(3), B(4), and 0(5) are connected in this order to battery connection parts A(6), B(7), and 0(8), first battery detection circuit part A (131 becomes an H output (see Figure 2 (jJl), so the NOR circuit section A127J becomes an H output.
This becomes the output. And the output part of the counter (Qat)
becomes H output (see point P1 in Figure 2 (!7))
, AND circuit section A (c) becomes an H output, switch circuit section A (9) is turned on, and current is supplied to the battery A (3) from the charging current output section (V++) (Fig. 2). Section T+) in the figure.

At the same time, an oscillation pulse train is output from the oscillation circuit section (to) of the AND circuit section G (2), and the output of the OR circuit section A also becomes an oscillation output. Therefore, the light emitting diode A
(45) starts blinking at the oscillation frequency of the oscillation circuit section (36) σ) (see interval T4 in FIG. 2!, 1)). At this time, the zero clock circuit section D (7) becomes an H output, the NOR circuit section DC (8) closes the gate and becomes an L output, and the oscillation circuit section (the oscillation pulse train from the column is output by the counter t2E + two people) In other words, the output part (QCl) of the counter ρ& becomes H.
The state is maintained and charging of battery A (3) continues. In addition, battery B (41, G (51 is battery connection part B (7), 0 (8)
(If two are connected, battery detection circuit part B (14), 0
(The highest output becomes the H output, NOR circuit section BI23)
, C- becomes H output, but while the battery A (3) is being charged, the output part (QO+) of the counter is held at 1 output, so the output parts (QC2) and (QC5) are H. Therefore, the AND circuit section B&6), canσ) does not become an H output. That is, battery B(4), 0(5)l
2, no current is supplied, and the light emitting diode B (lω,
CI (47) also remains off.

As the charging of the battery A (3) progresses and the specified voltage reaches η (:), the output of the charging completion detection circuit becomes H output (Fig. 2 (bacteria point P4)). QOL)
Since only the output from the AND circuit section becomes an H output, only the output from the AND circuit section becomes an H output, and the set section of flip-flop A (19)
S+)+: When two people are working, the output of the output section (qyt) is L.
The output becomes ■output (point P2 in Figure 2). Therefore, the NOR circuit section A (no) becomes an L output, the ANDNO circuit section also becomes an L output, the switch circuit section A (9) is in the off state (2 (point P3 in Figure 2), and the battery A (3) is charged. stops.

On the other hand, the output of AND circuit section Gq becomes L output, but battery A
Unlike before the connection in (3), the output of the output section (Qv 1) of the flip-flop AI is an H output, so the output of the OB circuit section A (3) is an H output.
The output of 42+ becomes the L output. Therefore, light emitting diode A
G15)) Stops blinking and becomes lit (Figure 2 (7)
) section T7). At this time, simultaneous 1: The output of the OR circuit section DC3η becomes an L output, opens the gate of the NOR circuit section DC, iE9, and the oscillation pulse train is input to the counter f281 (point Ps in FIG. 2 (()). Input At the first pulse after the start, the H output of the counter moves from the output part (qc+) to the output part (QC2), and the charge completion detection circuit part 04 is reset and becomes the L output. Part (Q
CI) and flip-flop A(Qv + ) cella) f
Although the fli(st) input changes, the reset part (B1) input 1'' of the flip-flop AC1g1 does not change, so the output from the output part (qr 1) does not change.Therefore, the output from the output part (qr 1) does not change. Light emitting diode A (,
45) holds the charging completion state.

Next (H output of the second printer name is output part (C) a +)
When transitioning from output section (QC2) i'' to output section (QC2) (described in two sections), battery B (4) has already been connected to battery connection section B (7) -2, so the output of NOR circuit section B@ becomes an H output. Therefore, if the output of the output section (QC2) becomes an H output, the output of the AND circuit section B (261 becomes an H output) and the battery A (
As in the case of 3), the battery B (4) becomes charged and the light emitting diode B (f46) starts blinking. At this time, the light emitting diode A (45)) is on, indicating that battery A (3) is fully charged, and the light emitting diode O (4η) is off, indicating that battery 0 (5) is not yet charged. The condition can be determined at a glance.

Start with battery A (3), then battery B (4), then battery 0 (5) (2) When all batteries are fully charged, these batteries (
3), (4), and (5), all the outputs of the battery detection circuit section 03゜041%+151 become L outputs, and the output section (QIPI
) (Qv2) ((15) iL output, all the light emitting diodes (afie (47) that were lit turn off. Unless the connection of the batteries (31 (4) and (5) is canceled, the flip-flop a→ (Corporation) Qv output section (Qrl) (Q
v2) (Qv5) holds the H output, and the light emitting diode +450=16) (4η continues to hold the lighting state. Also, the output of the NOR circuit C3123) 24) holds the L output, so the counter ρ rarely Output part (Qc+) (qc
2) Even if (qa5) becomes H output, the switch circuit section (9
)(101(In does not turn on. Therefore, the battery (
3) (4) and (5) will not result in overcharging.

If there are three or more batteries that need to be charged and you want to charge them twice (= means that you can charge the batteries by replacing them one by one after charging is complete).

Now consider a case where charging of batteries A(3) to C(5) is completed. When battery B (4) is replaced with an uncharged battery,
Flip-flop B because battery B(4)Y was removed once.
(The output section (Qv2) of 21 becomes an L output, and the NOR circuit section Af22.B (231% 0f241 (7) output covers IJ, H, I, respectively.

This becomes the output. Furthermore, the outputs of AND circuit sections A (c) and 0 (2D are two outputs without being related to the output sections (QC1) (QC5) of counter (2&). Also, the output of AND circuit section B261 is also ) output section (QC2)
If it is not an H output, it is an L output. However, the gate of the NOR circuit D(, 1 is open until the logical sum of AND circuit A(25), B(2Q, c(2η) or H), and the oscillation pulse from the oscillation circuit (36) is countered. 128)l:
Keep typing. However, when the output section (QC2) becomes an H output, the output of the AND circuit section B (26) is an H output, the output of the OR circuit section D0η is an H output, and the output of the NOR circuit section D (the output of
output, and the output of the output part (QC2) of the kakunta drink becomes H.
The newly inserted battery in the position of battery B (4) maintains its output and enters a charged state. When charging of this battery is completed and the charging completion detection circuit section 0 becomes an H output, the flip-flop B (20) is set again and its output section (Q!'2) becomes an H output.This output section (Q72 ) and battery detection circuit B
When the AND of the output with [141] is performed in the NOR circuit section B [with], the output becomes the L output, and therefore the counter I2
The output of the AND circuit section B (26) becomes an L output, and charging of the battery is stopped.
Qc 2) (Q(! Ri cyclically outputs H and L
The output is repeatedly output, but the flip-flop [1 (2
0) On output part 1t + ) (Qv2) (Or5)
It will not start charging again unless it is reset.

Note that the above operation was explained using two methods (replacing the battery after charging is completed), but for example, when battery B (5) is being charged while battery C (5) is being charged,
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 is a system in which n rechargeable batteries are connected in parallel (C2), charging starts from the battery in the first stage, and the batteries in the next stage (two batteries are charged in sequence). A detection means for detecting the completion of charging of the battery to be charged is provided, and after the completion of charging of the battery to be charged, a charging current is supplied to the next-stage battery t1! (2) The position of the newly set rechargeable battery (C2) is configured so that charging current can be supplied after charging of the nth battery is completed, so immediately after charging of each battery is completed (2) It can be replaced with the required battery, and immediately after charging of the nth battery is completed (
: Since charging of the batteries is started, it is possible to charge a large number of batteries in succession. Moreover, it is possible to charge multiple batteries cyclically without using a charging start switch (= it is possible to charge multiple batteries cyclically, and there is no chance of forgetting to charge them. Therefore, an unspecified number of people can charge multiple batteries in a row. It is especially effective if you do this.

[Brief explanation of drawings]

Fig. 1 is an implementation circuit diagram of the charger according to the present invention, and Fig. 2 is a circuit diagram of the charger according to the present invention.
These are output waveform diagrams of each circuit component in the figure, where ←r) is the input part OP of the counter, (1) is the output part QC1 of the counter, and 2) is the output part Q02 of the counter.
is the output part QO3 of the counter, t/71) is the battery detection circuit part A, (g) is the battery detection circuit part B, and is the output part qr+ of the flip-flop A, (k) is the battery detection circuit part C1. is the output part Q of flip-flop B? 2. Is the gate the output part Q of flip-flop C? ! +, switch circuit department person,
□□□1 is switch circuit part B, l-1!1 is switch circuit part 0, (:/) is light emitting diode A, Iy1 is light emitting diode L
Diodes B and H) are light-emitting diodes C and (Figure 3) are current waveform diagrams of the charging completion detection circuit section.

Claims (1)

[Claims] (1) Two (n) rechargeable batteries are connected in parallel, and charging begins with the battery in the first stage and sequentially charges the batteries in the next stage, and the completion of charging of the battery to be charged is detected. A detection means is provided to supply a charging current to the next battery after the charging of the battery to be charged is completed, and to charge the n-th battery to a newly set rechargeable battery at the position of an arbitrary fully charged battery. A charger characterized in that it is configured to supply charging current after completion of charging.