CN203574354U - Protective device applied to switching power supply - Google Patents
Protective device applied to switching power supply Download PDFInfo
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- CN203574354U CN203574354U CN201320800944.8U CN201320800944U CN203574354U CN 203574354 U CN203574354 U CN 203574354U CN 201320800944 U CN201320800944 U CN 201320800944U CN 203574354 U CN203574354 U CN 203574354U
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Abstract
The utility model discloses a protective device applied to a switching power supply. A temperature-detecting device is connected with each device of the switching power supply, and detects the present operating temperature of each device, and sends the present operating temperature to a processor connected with the temperature-detecting device, when the processor determines that the present operating temperature is higher than a corresponding preset operating temperature, a switching tube is controlled to be switched off, and therefore the fact that an electrical fire occurs in the device of the switching power supply due to a too high operating temperature is avoided, furthermore, the safety and power utilization of other electric appliances are not affected, and the life safety and the property safety of a user are guaranteed.
Description
Technical field
The utility model relates to automatic control technology field, relates in particular a kind of protective device that is applied to Switching Power Supply.
Background technology
Nowadays, along with the high speed development of power electronic technology, power electronic equipment and people's work, the relation of life are day by day close, and electronic equipment all be unable to do without reliable power supply, the Switching Power Supply that entered the computer power supply round Realization eighties, taken the lead in computer power supply regenerate, entering nineties Switching Power Supply in succession enters various electric power, electric equipment field, communication, electron detection device power supply, control appliance power supply etc. and has all used widely Switching Power Supply, can say, Switching Power Supply is closely bound up with daily life.
But; in actual applications; tend to because the reason such as the lack of standardization or line protection of the defect of Switching Power Supply itself or relative circuit design, user power utilization is unreasonable; and make the faults such as transmission line or equipment are short-circuited, current overload; thereby make the working temperature of certain or some device in Switching Power Supply too high; cause electrical fire, thereby affect the normal electricity consumption of other electrical equipment, even can jeopardize user's the security of the lives and property.
Utility model content
In view of this, the utility model provides a kind of protective device that is applied to Switching Power Supply, has realized the man-to-man protection in line terminal, has avoided the generation of electrical fire, has guaranteed the safety of user's lives and properties.
For achieving the above object, the utility model provides following technical scheme:
A protective device that is applied to Switching Power Supply, also comprises: with the temperature-detecting device that in Switching Power Supply, each device is connected, and the processor being connected with described temperature-detecting device with the switching tube in described Switching Power Supply, wherein,
The described temperature-detecting device receiving when processor detect at least one described in the current operating temperature of device while being greater than the default working temperature corresponding with described current operating temperature, control described switching tube and turn-off.
Preferably, described device also comprises: the warning device being connected with described processing.
Preferably, described device also comprises: the resetting means being connected with described processor with described switching tube respectively.
Preferably, described device also comprises: the current transformer being connected with input line and the described processor of described Switching Power Supply respectively.
Preferably, described warning device comprises indicator light and buzzer.
Preferably, described warning device is specially sound broadcasting device.
Preferably, described temperature-detecting device is specially temperature sensor.
Preferably, described processor comprises: analog to digital converter.
Preferably, described indicator light is specifically light-emitting diode.
Preferably, described device also comprises: be arranged on Switching Power Supply input and output circuit, and the circuit breaker being connected with described processor.
Known via above-mentioned technical scheme, compared with prior art, the utility model openly provides a kind of protective device that is applied to Switching Power Supply, because size and the temperature of himself of the electric current through transmission line or electrical equipment have certain relation, so, the utility model is by being connected the each device in temperature-detecting device Switching Power Supply, detect the current operating temperature of each device, and send it to processor, when this processor is judged this current operating temperature and is greater than the default working temperature corresponding with it, controlling this switching tube turn-offs, thereby avoided the each device of Switching Power Supply that electrical fire occurs because working temperature is too high, and then avoided the impact on other security appliances and electricity consumption, guaranteed user's the security of the lives and property.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the structural representation of the embodiment 1 of a kind of protective device that is applied to Switching Power Supply of the utility model;
Fig. 2 is the structural representation of the embodiment 2 of a kind of protective device that is applied to Switching Power Supply of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of protective device that is applied to Switching Power Supply, because size and the temperature of himself of the electric current through transmission line or electrical equipment have certain relation, so, the utility model is by being connected the each device in temperature-detecting device Switching Power Supply, detect the current operating temperature of each device, and send it to processor, when this processor is judged this current operating temperature and is greater than the default working temperature corresponding with it, controlling this switching tube turn-offs, thereby avoided the each device of Switching Power Supply that electrical fire occurs because working temperature is too high, and then avoided the impact on other security appliances and electricity consumption, guaranteed user's the security of the lives and property.
In prior art, Switching Power Supply (English full name is Switching Mode Power Supply), claim again exchange type power or switch converters, it is a kind of high frequency device for converting electric energy, its function is by the voltage of a position standard, sees through multi-form framework and is converted to the required voltage of user side or electric current.Concrete, it can become direct current through rectifying and wave-filtering by the interchange in AC network, again by high-frequency impulse bandwidth modulation signals control switch pipe, by this direct current be added to switch transformer elementary on, this switch transformer secondary induction goes out high frequency voltage, through rectifying and wave-filtering supply load, with the normal operation of proof load.
At present; in daily life; conventional is direct-current switch power supply; and direct-current switch power supply is generally divided into isolated and non-isolated two kinds of forms; protective device provided by the utility model is to be mainly applied in isolation type switching power supply; so not specified otherwise of the Switching Power Supply that improved herein, generally refers to isolation type switching power supply.Wherein, isolation type switching power supply, according to the difference of version, can be divided into again two kinds of forms of positive activation type and inverse-excitation type.Secondary cut-off when inverse-excitation type switch power-supply refers to transformer primary side conducting, transformer energy storage; Secondary conducting when end on former limit, transformer energy is discharged into the operating state of load, and general conventional inverse-excitation type switch power-supply mostly is single tube, and is applicable to low-power applications occasion.Positive activation type Switching Power Supply refers to that transformer primary side conducting while secondary induces corresponding voltage and outputs to load, and energy directly transmits by transformer, generally has single tube normal shock and double tube positive exciting, and conventional half-bridge and full-bridge circuit also all belong to forward converter.Wherein, the application scenario of mid power can adopt double tube positive exciting circuit or half-bridge circuit, and high-power applications occasion can adopt full-bridge circuit.
In actual applications, because inverse-excitation type switch power-supply is simple in structure, and compared with positive activation type Switching Power Supply, lack one and the much the same inductance of volume of transformer size, made the volume of whole Switching Power Supply relatively little.So, the preferred inverse-excitation type switch power-supply of the applied Switching Power Supply of the utility model.
As shown in Figure 1; for the utility model is a kind of, be applied to the structural representation of the embodiment 1 of the protective device of Switching Power Supply; this device can comprise: with the temperature-detecting device 110 that in Switching Power Supply, each device is connected; and the processor 120 being connected with temperature-detecting device with the switching tube in this Switching Power Supply; wherein
Temperature-detecting device 110 is specifically as follows temperature sensor, for detection of the current operating temperature of the each device in Switching Power Supply, and occurred to processor 120, so that judging this current operating temperature, processor 120 whether reaches the default working temperature corresponding with it, if so, control switch pipe turn-offs, thereby makes power line power-off, avoid the generation because of the too high electrical fire causing of working temperature of above-mentioned device, guaranteed user's the security of the lives and property.
Wherein, default working temperature is according to the nominal operation Temperature Setting of each device.
Preferably, in the utility model embodiment, can also comprise: the warning device being connected with processor 120, warning device forming as buzzer, sound broadcasting device or by indicator light (as light-emitting diode) and buzzer etc., the current working current of judging certain device when processor 120 has reached the default operating current corresponding with it, processor 120 can be controlled warning device and report to the police, and with reminding user, in time it is processed.
In addition, on the basis of above-described embodiment, protective device can also comprise: the resetting means being connected with processor 120, and for switching tube or other devices are resetted.
Certainly; in the utility model embodiment; protective device can also comprise: the current transformer being connected with processor 120 with Switching Power Supply input line respectively; so that processor 120 is when the current working current of judging this current transformer output reaches default operating current; control switch pipe turn-offs, thereby realizes the object of overcurrent protection.
In actual applications; if while a circuit breaker being connected with processor 120 being set on power supply input and output circuit; when processor 120 is when the current working current of judging this current transformer output reaches default operating current; can also directly control this circuit breaker disconnection, thereby realize the object of overcurrent protection.
Wherein, in the various embodiments described above, processor 120 can comprise analog to digital converter, for converting the analog signal amount receiving to digital signal amount, to realize the control to switching tube or circuit breaker.
In the utility model embodiment, because size and the temperature of himself of the electric current through transmission line or electrical equipment have certain relation, so, the utility model is by being connected the each device in temperature-detecting device Switching Power Supply, detect the current operating temperature of each device, and send it to processor, when this processor is judged this current operating temperature and is greater than the default working temperature corresponding with it, controlling this switching tube turn-offs, thereby avoided the each device of Switching Power Supply that electrical fire occurs because working temperature is too high, and then avoided the impact on other security appliances and electricity consumption, guaranteed user's the security of the lives and property.
As shown in Figure 2, for the utility model is a kind of, be applied to the structural representation of the embodiment 2 of the protective device of Switching Power Supply, this device can comprise: with the temperature-detecting device 210 that in Switching Power Supply, each device is connected, the processor 220 being connected with temperature-detecting device 210 with the switching tube in Switching Power Supply, and the warning device 230 being connected with this processor 220 respectively, resetting means 240, current transformer 250 and circuit breaker 260, wherein, resetting means 240 is also connected with switching tube, current transformer 250 is also connected with the input line of Switching Power Supply, and circuit breaker 260 is arranged on the input and output circuit of Switching Power Supply.
In the practical application of the utility model embodiment, temperature-detecting device 210 is specifically as follows temperature sensor, and warning device can be buzzer, the device that sound broadcasting device or light-emitting diode and buzzer form.Wherein, each device function in actual applications, refers to the description of above-described embodiment 1, will repeat no longer one by one herein.
Wherein, in processor 220, can comprise and convert the analog signals of input to digital quantity signal, to carry out subsequent control operation.
In addition, it should be noted that, in the various embodiments described above, Switching Power Supply also comprises: current rectifying and wave filtering circuit, transformer etc., its physical circuit can, referring to the circuit of existing inverse-excitation type switch power-supply, will no longer describe in detail at this.
In actual applications, to PCB(Printed Circuit Board, circuit board) while designing, for fear of the interference between the each device of this circuit, thereby affect the effect that realizes of whole circuit, the simulation part of this circuit and the circuit of numerical portion strictly can be separated, to core circuit key protection, and by the ground wire of this circuit around setting, make wiring thick as far as possible, and increase filter circuit and buffer circuit, in addition, analyze in this circuit and easily produce the part of disturbing (as clock circuit, communicating circuit etc.) and easy disturbed part (as analog sampling circuit etc.), this circuit of two types is taken measures respectively.Concrete, for interfering component, take braking measure, senser is taked to isolation and protection measure, and by they space and electric on space out.In addition, when design on board level, above-mentioned each components and parts are placed will be away from printed board edge as far as possible, is beneficial to protection air electric discharge.
In the practical application of the present embodiment, can detect by the temperature-detecting device being connected with the each device of Switching Power Supply the current operating temperature of respective devices, and send it to the processor being connected with temperature-detecting device, by this processor, judge whether this current working power reaches the default working temperature corresponding with it, if so, control switch pipe turn-offs, thereby makes Switching Power Supply power-off, realize the object of overcurrent protection, and avoid the generation of electrical fire; In addition, processor can also obtain the current working current that current transformer detects, and judges whether this current working current reaches the operating current corresponding with it; if; control circuit breaker disconnection, thereby realized the object of overcurrent protection, guaranteed user's the security of the lives and property.
In addition; it should be noted that; in the utility model above-described embodiment; the protective device that is applied to Switching Power Supply can also comprise connecting line for connecting each device or connection device etc.; to describe in detail no longer one by one herein; as long as those skilled in the art do not pay creative work, determine, all belong to protection range of the present utility model.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed device of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates referring to method part.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a protective device that is applied to Switching Power Supply, is characterized in that, also comprises: with the temperature-detecting device that in Switching Power Supply, each device is connected, and the processor being connected with described temperature-detecting device with the switching tube in described Switching Power Supply, wherein,
The described temperature-detecting device receiving when processor detect at least one described in the current operating temperature of device while being greater than the default working temperature corresponding with described current operating temperature, control described switching tube and turn-off.
2. device according to claim 1, is characterized in that, described device also comprises: the warning device being connected with described processing.
3. device according to claim 2, is characterized in that, described device also comprises: the resetting means being connected with described processor with described switching tube respectively.
4. device according to claim 3, is characterized in that, described device also comprises: the current transformer being connected with input line and the described processor of described Switching Power Supply respectively.
5. device according to claim 2, is characterized in that, described warning device comprises indicator light and buzzer.
6. device according to claim 2, is characterized in that, described warning device is specially sound broadcasting device.
7. according to the device described in claim 1-6 any one, it is characterized in that, described temperature-detecting device is specially temperature sensor.
8. device according to claim 7, is characterized in that, described processor comprises: analog to digital converter.
9. device according to claim 5, is characterized in that, described indicator light is specifically light-emitting diode.
10. device according to claim 4, is characterized in that, described device also comprises: be arranged on Switching Power Supply input and output circuit, and the circuit breaker being connected with described processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800944.8U CN203574354U (en) | 2013-12-06 | 2013-12-06 | Protective device applied to switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800944.8U CN203574354U (en) | 2013-12-06 | 2013-12-06 | Protective device applied to switching power supply |
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| Publication Number | Publication Date |
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| CN203574354U true CN203574354U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320800944.8U Expired - Lifetime CN203574354U (en) | 2013-12-06 | 2013-12-06 | Protective device applied to switching power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505535A (en) * | 2016-11-22 | 2017-03-15 | 四川九洲电器集团有限责任公司 | A kind of transmission line malfunction monitoring method, equipment and system |
| CN106787065A (en) * | 2016-12-21 | 2017-05-31 | 苏州格远电气有限公司 | Wind power pitch-controlled system back-up source charging device and its charge control method |
| CN112393677A (en) * | 2020-10-12 | 2021-02-23 | 浙江航鑫支吊架有限公司 | Intelligent anti-seismic support and hanger system based on Internet of things |
-
2013
- 2013-12-06 CN CN201320800944.8U patent/CN203574354U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505535A (en) * | 2016-11-22 | 2017-03-15 | 四川九洲电器集团有限责任公司 | A kind of transmission line malfunction monitoring method, equipment and system |
| CN106787065A (en) * | 2016-12-21 | 2017-05-31 | 苏州格远电气有限公司 | Wind power pitch-controlled system back-up source charging device and its charge control method |
| CN112393677A (en) * | 2020-10-12 | 2021-02-23 | 浙江航鑫支吊架有限公司 | Intelligent anti-seismic support and hanger system based on Internet of things |
| CN112393677B (en) * | 2020-10-12 | 2022-06-10 | 浙江航鑫支吊架有限公司 | Intelligent anti-seismic support and hanger system based on Internet of things |
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Granted publication date: 20140430 |