JPH0477533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a multi-output power supply unit including a switch that receives the storage battery as an input and drives a load unit uninterruptably connected from the storage battery via a switch, and the multi-output power supply unit. This relates to an auxiliary power supply unit including a switch.

In recent years, with the spread of various OA equipment, power supply devices have become increasingly diverse. Especially in multi-output power supply devices, depending on the application, the input switch is turned on and off.
There is an increasing demand for a rise and fall sequence of each output that satisfies whatever load conditions and input conditions.
If this sequence is not satisfied, there is a risk of serious accidents such as memory destruction. However, if the system is equipped with a battery-powered uninterruptible function and input switches are installed in each part to enable separation. The condition is that no matter which part of the switch is turned on or off, the rise and fall sequences must be satisfied for all load conditions and input conditions.

Conventionally, methods of adding capacitors on the input and output sides have been widely attempted in order to satisfy the rise and fall sequences as described above, but this method is not only affected by load conditions and input conditions, but also In complex systems, the effect was less certain.

The present invention aims to solve the above-mentioned drawbacks, and provides a multi-output power supply unit that supplies power to a load while floatingly charging a storage battery from an AC power source via a charger, and drives the load. In a system that has an auxiliary power supply unit that drives the power supply unit, switches are provided for each part of the storage battery, multi-output power supply, and auxiliary power supply, and no matter which switch is used to turn on or off, the influence of load conditions and input conditions will be ignored. The purpose of this invention is to provide a power supply device that satisfies the rising and falling sequences without receiving a signal, and will be described in detail below with reference to embodiments.

FIG. 1 is a block diagram of an embodiment of the present invention, in which 1 is an AC power supply, 2 is an AC input switch, 3 is a load section, 4 is a multi-output power supply section, 5 is an auxiliary power supply section, and 9 is a block diagram of an embodiment of the present invention.
is a charger, and 10 is a storage battery. The load section 3 consists of parallel loads 3-1 and 3-2, and a multi-output power supply circuit 4.
-1 and the outputs 6-1, 7-1, 8-1 and 6-2, 7 of the multi-output power supply section 4 consisting of the second switch 12
-2 and 8-2 are supplied as power sources for driving the loads 3-1 and 3-2, respectively. Further, the multi-output power supply section 4 has an auxiliary power supply circuit 5-1 and a third switch 1.
It is driven by the output 14-1 of the auxiliary power supply section 5 consisting of 3. the multi-output power supply section 4 and the auxiliary power supply section 5;
The load section 3 is connected to the storage battery 10 via the first switch 11.
is used as the input power supply.

To start and stop the above system, it is common to first turn on the AC input switch 2 and then turn on and off the first, second, and third switches 11, 12, and 13. 4 output 6, 7, 8
When the rising and falling sequences of 1 and 2 rise and fall at the same time as shown in Figure 2 a, b, and c, the first, second, and third switches 1
The order in which 1, 12, and 13 are turned ON and OFF does not matter. However, depending on the nature of the load, a rising and falling sequence as shown in FIG.
It is not only affected by the order in which 13 is turned on and off, but also by load conditions and input conditions, and the sequence shown in Figure 3 must be satisfied under any conditions. You will end up lacking it. Here, Figure 2,
In FIG. 3, a, b, and c correspond to outputs 6, 7, and 8 of the multi-output power supply section 4, respectively. Lack of reliability as described above means that serious accidents such as memory destruction may occur due to the wrong order of turning on and off the first, second, and third switches 11, 12, and 13, the load conditions, and input conditions at that time. It means that there is a risk of causing

FIG. 4 is an example of an implementation circuit that eliminates the above drawbacks,
Under any load conditions or input conditions, the first,
Turn on the second and third switches 11, 12, and 13.
The third
It is capable of satisfying the sequence shown in the figure, and its operation will be described in detail below. The numbers in the figure that are common to those in Figure 1 have the same functions, 15 and 16 are diodes, 17 is a relay,
18, 19 are contacts linked to the relay 17, 20,
21 is a capacitor, and 22 is a contact linked to the third switch 13. AC input switch 2 is always
Turn it on to put the storage battery 10 in a floating charged state.

First, turn on the second and third switches 12 and 13.
The case where the first switch 11 is turned on and off will be explained. first switch 11
When turned on, the auxiliary power supply circuit 5-1 and the multi-output power supply circuit 4-1 operate, and the relay 17 is also driven, contacts 18 and 19 are short-circuited, and outputs 6, 7, and 8 are output.
The outputs 6 and 8 rise later than the output 7 due to the delay in operation time until the contacts 18 and 19 are short-circuited after the relay 17 is driven. When the first switch 11 is turned off, the capacitors 20 and 2 on the input side of the auxiliary power supply circuit 5-1 and the multi-output power supply circuit 4-1 are
Since the electric charge of 1 is prevented from discharging via the relay 17 by the diodes 15 and 16, the contacts 18 and 19 are immediately opened, and the outputs 6 and 8 fall in FIG. 3B. On the other hand, even if the first switch 11 is turned off, the output 7 is
1 is the auxiliary power supply circuit 5-1, and the multi-output power supply circuit 4-1
Since the output is normal while discharging via the output, the output falls later than outputs 6 and 8.

Next, a case where the first and third switches 11 and 13 are turned on and the second switch 12 is turned on and off will be described. second switch 12
When turned on, since the auxiliary power supply circuit 5-1 is already operating, the multi-output power supply circuit 4-1 immediately operates and the output 7 rises. On the other hand, outputs 6 and 8 rise later than output 7 due to the delay in operation time until contacts 18 and 19 are short-circuited after Lily 17 is driven. When the second switch 12 is turned off, contact 1
8 and 19 are immediately opened, and the outputs 6 and 8 fall as shown in FIG. 3B. On the other hand, output 7 is the auxiliary power supply circuit 5
-1 continues to operate because the third switch 13 is in the ON state, but the second switch 12 is in the ON state.
Since it is turned off, the multi-output power supply circuit 5-1 normally outputs only while the capacitor 20 is discharging, and then falls later than the outputs 6 and 8.

Furthermore, turn on the first and second switches 11 and 12.
The case where the third switch 13 is turned on and off will be explained. Third switch 13
When turned on, the auxiliary power supply circuit 5-1 operates and the multi-output power supply circuit 4-1 operates at the same time, contact 22 is short-circuited and relay 17 is driven, but contact 18,
Outputs 6 and 8 will rise later than output 7 due to the delay in operation time until output 19 is short-circuited. At the same time as the third switch 13 is turned off, the contact 22 is opened, the contacts 18 and 19 are also opened, and the outputs 6 and 8 fall as shown in FIG. 3B. On the other hand, even if the third switch 13 is turned off, the auxiliary power supply circuit 5-1 continues to supply power to the multi-output power supply circuit 4-1 while the capacitor 21 is discharging, and the output 7 becomes a normal output. , 8.

As described above, the present invention is applicable to load conditions, input conditions,
The sequence shown in Figure 3 can be satisfied without being affected by the ON/OFF order of the switches. Note that in the example circuit shown in FIG. 4, the multi-output power supply circuit 4-1 has 3 outputs and the parallel loads are 2 parallel, but it is possible to increase or decrease any of them, and the sequence diagram in FIG. delay the rise of b
Although the fall of the relay 17 is delayed, the combination can be changed by changing the connection position of the contacts 18 and 19 linked to the relay 17, and the delay time can be adjusted by adding a delay to the operation of the relay 17. It goes without saying that it can be done.

Therefore, the present invention provides a multi-output power supply unit including a switch with the storage battery as input, which drives a load unit uninterruptably connected from the storage battery via a switch, and an auxiliary power supply unit including a switch that drives the multi-output power supply unit. In the power supply section, one diode, one relay, and a contact that interlocks with the input switch of the auxiliary power supply section are added to the multi-output power supply section, and only one diode is added to the auxiliary power supply section. The rise and fall sequences between the outputs of each section can be determined without being affected by input conditions, load conditions, or the ON/OFF order of switches of each section, and this has great industrial value.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG.
3 are sequence diagrams of rise and fall of each output of the multi-output power supply circuit, and FIG. 4 is a diagram showing an example of a circuit according to the present invention. 1...AC power supply, 2...AC input switch, 3
...Load section, 4...Multi-output power supply section, 5...Auxiliary power supply section, 6, 7, 8...Output of multi-output power supply circuit, 9
... Charger, 10 ... Storage battery, 11, 12, 13
...First, second, third switch, 14... Output of auxiliary power supply circuit, 15, 16... Diode, 1
7... Relay, 18, 19... Contact linked to relay 17, 20, 21... Capacitor, 22...
A contact linked to switch 13.

Claims (1)

[Scope of Claims] 1. A load section is uninterruptably connected to a storage battery via a first switch, and DC power is supplied from the first switch via a second switch to the load section. a multi-output power supply section equipped with a multi-output power supply circuit for supplying multiple DC outputs;
A power supply device comprising: an auxiliary power supply section to which DC power is supplied from the first switch via a third switch, and an auxiliary power supply circuit for supplying driving power to the multi-output power supply circuit; between the second switch and the multi-output power supply circuit and the third
A diode is inserted between the switch and the auxiliary power circuit, and a relay is connected to the connection point between the second switch and the diode, and when the third switch is turned on,
A series circuit with a contact that turns ON is connected, and the contact that turns ON when the relay is driven is inserted between a part of the output terminal of the multi-output power supply circuit and the input terminal of the load in the load section. and power supply equipment. 2. A patent claim characterized in that the contact that turns ON when the relay is driven is connected to an output terminal of the multiple DC outputs of the multi-output power supply circuit that requires a delay in rising but does not allow a delay in falling. The power supply device according to item 1.