JPH0638357A - Power supply - Google Patents

Abstract

(57) [Summary] [Purpose] To avoid the heating failure of electronic equipment due to the temperature rise on the processor unit side. [Structure] Temperature sensors 12a to 12 are provided on the processor cards 11a to 11n in the processor unit 10, respectively.
n is provided, and when these temperature sensors detect a temperature rise abnormality, the detection signal is input to the in-unit heating temperature determination circuit 13, and calculation is performed there. Then, the calculation result is input to the control circuit 6 in the power supply unit 9 to control or stop the power supply to the processor unit 10. As a result, when the temperature inside the processor unit 10 exceeds a certain value, the temperature rise of the processor unit can be suppressed by adjusting the power supplied to the processor unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stabilized direct current power supply device used in an electronic device, and more particularly to a power supply circuit in consideration of overcurrent protection of an electronic device to which electric power is supplied.

[0002]

2. Description of the Related Art A power supply device connected to a processor unit must be provided with a measure for protecting an electronic device (for example, a processor card) of the connected processor unit when an abnormality such as a failure occurs. Conventionally,
As this type of power supply device, for example, an overvoltage protection circuit for a DC stabilized power supply disclosed in Japanese Patent Laid-Open No. 63-136115 is known, and its outline will be described with reference to FIG.

As shown in FIG. 4, this circuit includes a main switch element 3, an inverter circuit 4, a rectifier circuit 5, and a control circuit 6 for turning on and off the main switch element 3 so that the output voltage becomes constant. And a stabilized direct current power supply section. Further, a detection circuit 21 for detecting the output current,
A temperature sensor 22 for detecting the ambient temperature, a drooping point determining circuit 23 for determining the drooping point of the output current with the output of the temperature sensor 22 as an input, and an output with the output of this circuit 23 and the output of the current detecting circuit 21 as inputs. Control circuit 6 for voltage droop signal
It is intended to secure an effective safe operation of the power source by changing the maximum droop point of the output current according to the ambient temperature by providing the output droop control circuit 24 which sends the power droop control circuit.
In the figure, 1 is an input power source, 2 is an input capacitor, 7 is an input terminal, 8 is an output terminal, and 10 is a processor unit.

[0004]

However, in this prior art, attention is paid to heating of the power supply device. However, some abnormality occurs in a part of various electronic devices installed in the processor unit, and the abnormal electronic device is detected. When the overcurrent is supplied, the power supply detects only the ambient temperature of itself even though abnormal heating occurs in the electronic device, and thus continues to supply power normally. Therefore, there is a problem in that the power supply device cannot be controlled due to the rise in temperature of the processor unit side, and the electronic device in the processor unit is damaged.

In view of the above points, the present invention has been made to solve the above-mentioned problems, and prevents the electronic equipment from being damaged and generating heat due to the temperature rise on the processor unit side, and at the same time, prevents the electronic equipment in the processor unit from being damaged. It is an object of the present invention to provide a power supply device capable of performing heat protection of equipment.

[0006]

In order to achieve the above object, the present invention provides a DC stabilized power supply connected to a processor unit power supply with abnormal heating by a temperature sensor provided in the processor unit in controlling power supply. The detection is performed, and the power supply to the processor unit is controlled or stopped based on the detection result.

Further, another invention of the present invention detects abnormal heating by a temperature sensor provided in each processor card in the processor unit in the control of power supply to the DC stabilized power supply connected to the processor unit power supply. ,
Based on the result, the power supply to the temperature abnormality occurrence processor card in the processor unit is controlled or stopped. Furthermore, another invention of the present invention is
In the above, abnormalities of the cooling fan that suppresses the temperature rise in the processor unit are detected, and based on the detection result, the decrease of the cooling effect in the processor unit is detected to control or stop the power supply to the processor unit. It was made to let.

[0008]

In the present invention, the abnormal temperature is detected by the temperature sensor of each electronic device in the processor unit, and the abnormal temperature signal is input to the control circuit of the power source to control or stop the power supply to the processor unit. As a result, it is possible to prevent the electronic device from being damaged and generating heat due to the temperature rise in the processor unit, and to protect the electronic device in the processor unit from overheating.

Further, in the present invention, the temperature abnormality signal from the processor unit and the abnormality warning signal of the cooling fan are input to the control circuit of the power source to control or stop the power supply to the processor unit. It is possible to avoid the heating failure of the electronic device due to the temperature rise in the processor unit.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. Embodiment 1 FIG. 1 is a basic block configuration diagram of a power supply device according to a first embodiment of the present invention. This embodiment comprises a main switch element 3, an inverter circuit 4, a rectifier circuit 5, and a control circuit 6, and the control circuit 6 turns on the main switch element 3.
The stabilized DC power supply unit 9 is configured so that the output voltage becomes constant by turning it off as in the conventional example shown in FIG. The output voltage or power supplied to the unit 10 depends on each processor card 11 in the processor unit 10.
a to 11n.

The processor cards 11a ...
A temperature sensor 12 for detecting each temperature is provided in 11n.
a to 12n are provided, the detection signals of the temperature sensors 12a to 12n are input to the in-unit heating temperature determination circuit 13, and the control circuit 6 is controlled by the determination result to supply power to the processor unit 10. It is designed to be controlled or stopped. In the drawings, the same reference numerals indicate the same or corresponding parts.

As described above, according to the power supply device of this embodiment,
When the temperature sensors 12a to 12n provided in the processor cards 11a to 11n detect a temperature rise abnormality, the detection signal is input to the in-unit heating temperature determination circuit 13,
Therefore, the calculation is performed. Then, the output signal of the calculation result is input to the control circuit 6 in the power supply unit 9 to control or stop the power supply to the processor unit 10 to avoid abnormal heating in the processor unit. That is, when the temperature in the processor unit 10 exceeds a certain value,
By adjusting the electric power supplied to the processor unit 10, the temperature rise of the processor unit can be suppressed.

Embodiment 2 FIG. 2 is a basic block diagram showing the second embodiment of the present invention. In this embodiment, the difference from that of FIG.
Power is supplied to the power supply sequence circuit 14 in 0, and the power supplies Va to Vn are supplied from the power supply sequence circuit 14 to the processor cards 11a to 11n, respectively.
When the temperature heating abnormality is detected by the detection signals from the temperature sensors 12a to 12n provided in the individual processor cards 11a to 11n, the power supply sequence circuit 14 causes the temperature heating abnormality to occur.
This means that the power supply to 11n is forcibly stopped.

Therefore, according to this embodiment, when the temperature of a certain processor card 11a to 11n exceeds a certain value, the power supplies Va to Vn supplied to these processor cards 11a to 11n are stopped and the processor card becomes abnormal. Heating can be prevented.

Third Embodiment FIG. 3 is a basic configuration diagram showing a third embodiment of the present invention. This embodiment is different from that shown in FIG. 1 in that a cooling air conditioning fan 1 for cooling and air conditioning the processor unit 10 is provided.
A fan abnormality determination unit 15 for determining abnormality of 6a to 16n is provided, and a fan abnormality alarm signal output from the determination unit 15 is input to the control circuit 6 in the power supply unit 9 to control power supply to the processor unit 10. That is to stop it.

Therefore, according to the present embodiment, a temperature heating abnormality in the processor unit 10 due to a reduction in the cooling effect on the processor unit 10 is predicted in advance, and the power supply is controlled or stopped, whereby the temperature inside the processor unit 10 is controlled. The rise can be predicted and abnormal heating can be prevented.

The present invention is not limited to the above embodiment, but in the embodiment shown in FIG. 3, cooling air conditioning fans 16a to 16a for suppressing the temperature rise in the processor unit 10.
The fan abnormality warning signal output from the fan abnormality determination unit 15 that determines the 6n abnormality and the temperature abnormality signal output from the determination circuit 13 of the processor unit 10 in the embodiment of FIG. 1 are input to the control circuit 6 of the power supply unit 9. Then, the power supply to the processor unit 10 can be controlled or stopped. In this case, by controlling or stopping the power supply from the power supply unit 9 by reducing the ambient temperature condition inside the processor unit and the cooling effect inside the unit, it is possible to avoid the heating failure of the processor unit as in the above embodiment. .

[0018]

As described above, according to the present invention, the power supply unit is controlled by the temperature abnormality signal detected by the temperature sensor provided in the processor unit and / or the abnormality warning signal of the cooling fan. Since the power is supplied to the circuit to control or stop the power supply to the processor unit, it is possible to prevent the heating failure of the electronic device due to the temperature rise of the processor unit. Therefore, not only the heat protection of the power supply device but also the safe operation of the power supply device in consideration of the heat protection of the processor unit side can be performed, and there is an excellent effect in practical use.

[Brief description of drawings]

FIG. 1 is a basic configuration diagram of a first embodiment of the present invention.

FIG. 2 is a basic configuration diagram of a second embodiment of the present invention.

FIG. 3 is a basic configuration diagram of a third embodiment of the present invention.

FIG. 4 is a configuration diagram of an example of a conventional device.

[Explanation of symbols]

 1 Input Power Supply 3 Main Switch Element 4 Inverter Circuit 5 Rectifier Circuit 6 Control Circuit 9 DC Stabilized Power Supply Unit 10 Processor Unit 11a to 11n Processor Card 12a to 12n Temperature Sensor 13 Heating Temperature Determining Circuit in Unit 14 Power Supply Sequence Circuit 15 Fan Abnormality Judgment unit 16a to 16n Cooling air conditioning fan

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H02M 7/48 F 9181-5H

Claims (3)

[Claims] 1. An abnormal heating by a temperature sensor provided in a processor unit is detected in a power supply control for a DC stabilized power supply connected to a processor unit power supply, which comprises a main switch element, an inverter circuit and a rectifier circuit, A power supply device comprising a circuit for controlling or stopping the power supply to the processor unit based on the detection result. 2. An abnormality caused by a temperature sensor provided in each processor card in the processor unit in controlling the power supply to the DC stabilized power supply connected to the processor unit power supply, which comprises a main switch element, an inverter circuit and a rectifier circuit. A power supply device comprising a circuit that detects heating and controls or stops power supply to a processor card in which a temperature abnormality occurs in the processor unit based on the detection result. 3. The power supply device according to claim 1, wherein an abnormality of a cooling fan that suppresses a temperature rise in the processor unit is detected, and a decrease in the cooling effect in the processor unit is detected based on the detection result. A power supply device comprising a circuit for controlling or stopping power supply to a processor unit.