CN207442435U - Switching Power Supply protective device - Google Patents
Switching Power Supply protective device Download PDFInfo
- Publication number
- CN207442435U CN207442435U CN201721625784.2U CN201721625784U CN207442435U CN 207442435 U CN207442435 U CN 207442435U CN 201721625784 U CN201721625784 U CN 201721625784U CN 207442435 U CN207442435 U CN 207442435U
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- China
- Prior art keywords
- power supply
- switching power
- protective device
- circuit
- input
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Abstract
The utility model discloses a kind of Switching Power Supply protective devices, and including shell, Switching Power Supply, protective device, radiator and control mainboard, Switching Power Supply, protective device, radiator and control mainboard are respectively provided with inside the shell；Protective device includes transformer, protection circuit, control module, input over-voltage detection circuit, output overvoltage detection circuit, output overcurrent detection circuit, voltage detection module and current detection module, and current detection module detection flows through the current value of the switch of the relay；The current value that the voltage value and the current detection module that control module is detected according to the voltage detection module detect controls the shut-off of the Switching Power Supply.The utility model can control shut-off in time when occurring abnormal, have overcurrent and over-voltage protecting function；Temperature conditions can also be monitored, when the bad internal temperature of heat dispersal situations drastically raises, open wind turbine and carry out rapid cooling, avoid causing happening for device failure due to temperature rise.
Description
Technical field
The utility model is related to electric power more particularly to Switching Power Supply protective devices.
Background technology
Nowadays, with the development of telling of Power Electronic Technique, the work of power electronic equipment and people, the relation day of life
It is beneficial close, and electronic equipment all be unable to do without reliable voltage.Switching Power Supply is using modern power electronics technology, by controlling work(
The time ratio (duty cycle) of rate switching tube turn-on and turn-off, maintains a kind of cinema stabilized the output voltage.Switching Power Supply with
Small-sized, light weight and efficient feature are widely used in various electronic equipments, are current electronics and information industry rapid developments
A kind of indispensable power supply.
In practical applications, often because Switching Power Supply is in itself or the defects of expected relevant circuit design, Yong Huyong
The lack of standardization or line protection of electricity is unreasonable etc. original, but that short circuit, current overload etc. occurs is former for transmission line of electricity or equipment
Barrier, so that some device temperatures in Switching Power Supply are excessively high, causes fire, influences to use or even endangers production property safety.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide Switching Power Supply protective device, energy
Solve the problems, such as that Switching Power Supply is not safe and reliable enough in the prior art.
The purpose of this utility model is realized using following technical scheme：
A kind of Switching Power Supply protective device, including shell, Switching Power Supply, protective device, radiator and control mainboard, is opened
Powered-down source, protective device, radiator and control mainboard are respectively provided with inside the shell；Protective device include transformer, protection circuit,
Control module, input over-voltage detection circuit, output overvoltage detection circuit, output overcurrent detection circuit, voltage detection module and electricity
Flow detection module, control module driving transformer work, it is described input over-voltage detection circuit, the output overvoltage detection circuit and
The output terminal of the output overcurrent detection circuit is connected with protection circuit controlled end；It is described protection circuit input terminal with it is described
Power input connects, and the test side of the input over-voltage detection circuit is connected with the power input, the output overvoltage
The test side of detection circuit is connected with the transformer output terminal；The input terminal of the output overcurrent detection circuit and the transformation
Device output terminal connects；The input terminal connection power input of transformer；Voltage detection module, for detecting the switch of relay
Voltage value between contact, the switch of the relay are connected between power input and the power circuit of the Switching Power Supply；
Current detection module, for detecting the current value for the switch for flowing through the relay；Control module, for being examined according to the voltage
The current value that the voltage value and the current detection module that survey module detects detect controls the work shape of the Switching Power Supply
State；Radiator includes the temperature sensor and wind turbine that are connected with control mainboard, and temperature sensor is arranged in Switching Power Supply, wind
Machine is arranged on outer casing inner wall both sides.
Preferably, current detection module includes：Sampling resistor and the first difference measurement circuit, the sampling resistor are connected on
Between the switch of the relay and the power circuit of the Switching Power Supply, the first difference measurement circuit includes the first computing
Amplifier, the positive input terminal of first operational amplifier are connected to one end of the sampling resistor, first operation amplifier
The negative input end of device is connected to the other end of the sampling resistor, the output terminal of first operational amplifier and the control mould
Block connects.
Preferably, protective device includes thyristor, first resistor, second resistance and the first diode；The thyristor
Input terminal is connected through the first resistor with external power supply, the output head grounding of the thyristor, the controlled end of the thyristor
For the controlled end of the protection circuit；The cathode of first diode is connected with the input terminal of the thyristor, and described first
The anode of diode is connected through the second resistance with the control module.
Preferably, warning device is additionally provided on shell, the warning device includes indicator light and buzzer, indicator light and bee
Ring device is connected respectively with control mainboard.
Preferably, shell both sides are equipped with radiating groove, and the bottom of shell is equipped with heat dissipation base.
Compared with prior art, the beneficial effects of the utility model are：
The utility model can detect the situation of change of voltage, electric current constantly, when occurring abnormal, can control pass in time
It is disconnected, there is overcurrent and over-voltage protecting function；Temperature conditions can also be monitored, in the bad internal temperature of heat dispersal situations drastically
It during rise, opens wind turbine and carries out rapid cooling, avoid causing happening for device failure due to temperature rise.
Description of the drawings
Fig. 1 is the structure diagram of the Switching Power Supply protective device of the utility model；
Fig. 2 is the function structure chart of the Switching Power Supply protective device of the utility model
In figure：1st, shell；2nd, wind turbine；3rd, radiating groove；4th, heat dissipation base.
Specific embodiment
In the following, with reference to attached drawing and specific embodiment, the utility model is described further：
As depicted in figs. 1 and 2, the utility model provides a kind of Switching Power Supply protective device, including shell 1, switch electricity
Source, protective device, radiator and control mainboard, Switching Power Supply, protective device, radiator and control mainboard are arranged at outer
In shell 1；Protective device include transformer, protection circuit, control module, input over-voltage detection circuit, output overvoltage detection circuit,
Output overcurrent detection circuit, voltage detection module and current detection module, the work of control module driving transformer are described to input
The output terminal for pressing detection circuit, the output overvoltage detection circuit and the output overcurrent detection circuit is controlled with protection circuit
End connection；The input terminal of the protection circuit is connected with the power input, the test side of the input over-voltage detection circuit
It is connected with the power input, the test side of the output overvoltage detection circuit is connected with the transformer output terminal；It is described
The input terminal of output overcurrent detection circuit is connected with the transformer output terminal；The input terminal connection power input of transformer；
Voltage detection module, for detecting the voltage value between the contact of the switch of relay, the switch of the relay is connected to power supply
Between input terminal and the power circuit of the Switching Power Supply；Current detection module, for detecting the switch for flowing through the relay
Current value；Control module is examined for the voltage value detected according to the voltage detection module and the current detection module
Whether the working condition of the current value control Switching Power Supply measured, generate electric arc between the contact of the switch is judged, work as judgement
When generating electric arc between the contact of the switch, the Switching Power Supply is controlled to be stopped；The deterministic process of control module is existing
Technology.Radiator includes the temperature sensor being connected with control mainboard and wind turbine 2, and temperature sensor is arranged on Switching Power Supply
On, wind turbine 2 is arranged on outer casing inner wall both sides.
In the present embodiment, as preferred embodiment, warning device, the warning device bag are additionally provided on shell 1
Indicator light and buzzer are included, indicator light and buzzer are connected respectively with control mainboard.It can be by indicator light and buzzer
Abnormal conditions remind operating personnel in time when occurring.
As further embodiment, 1 both sides of shell are equipped with radiating groove 3, and the bottom of shell 1 is equipped with heat dissipation base 4.It is logical
Heat dissipation effect can be accelerated by crossing heat dissipation base 4 and radiating groove 3.
As preferred embodiment, current detection module includes：Sampling resistor and the first difference measurement circuit, it is described to adopt
Sample resistance is connected between the switch of the relay and the power circuit of the Switching Power Supply, the first difference measurement circuit
Including the first operational amplifier, the positive input terminal of first operational amplifier is connected to one end of the sampling resistor, described
The negative input end of first operational amplifier is connected to the other end of the sampling resistor, the output terminal of first operational amplifier
It is connected with the control module.
As preferred embodiment, protective device includes thyristor, first resistor, second resistance and the first diode；
The input terminal of the thyristor is connected through the first resistor with external power supply, the output head grounding of the thyristor, the crystalline substance
The controlled end of brake tube is the controlled end for protecting circuit；The cathode of first diode connects with the input terminal of the thyristor
It connects, the anode of first diode is connected through the second resistance with the control module.
It will be apparent to those skilled in the art that technical solution that can be as described above and design, make other various
Corresponding change and deformation, and all these changes and deformation should all belong to the protection of the utility model claims
Within the scope of.
Claims (5)
1. a kind of Switching Power Supply protective device, which is characterized in that including shell, Switching Power Supply, protective device, radiator and control
Mainboard processed, Switching Power Supply, protective device, radiator and control mainboard are respectively provided with inside the shell；Protective device include transformer,
Protect circuit, control module, input over-voltage detection circuit, output overvoltage detection circuit, output overcurrent detection circuit, voltage detecting
Module and current detection module, the work of control module driving transformer, the input over-voltage detection circuit, output overvoltage inspection
Slowdown monitoring circuit and the output terminal of the output overcurrent detection circuit are connected with protection circuit controlled end；The input of the protection circuit
End is connected with the power input, and the test side of the input over-voltage detection circuit is connected with the power input, described
The test side of output overvoltage detection circuit is connected with the transformer output terminal；The input terminal of the output overcurrent detection circuit with
The transformer output terminal connection；The input terminal connection power input of transformer；Voltage detection module, for detecting relay
Switch contact between voltage value, the switch of the relay is connected to power input and the power electricity of the Switching Power Supply
Between road；Current detection module, for detecting the current value for the switch for flowing through the relay；Control module, for according to institute
The voltage value that voltage detection module detects and the current value that the current detection module detects are stated, controls the Switching Power Supply
Working condition；Radiator includes the temperature sensor and wind turbine that are connected with control mainboard, and temperature sensor is arranged on switch
On power supply, wind turbine is arranged on outer casing inner wall both sides.
2. Switching Power Supply protective device as described in claim 1, which is characterized in that current detection module includes：Sampling resistor
With the first difference measurement circuit, the sampling resistor is connected on the switch of the relay and the power circuit of the Switching Power Supply
Between, the first difference measurement circuit includes the first operational amplifier, and the positive input terminal of first operational amplifier connects
In one end of the sampling resistor, the negative input end of first operational amplifier is connected to the other end of the sampling resistor,
The output terminal of first operational amplifier is connected with the control module.
3. Switching Power Supply protective device as described in claim 1, which is characterized in that protective device includes thyristor, the first electricity
Resistance, second resistance and the first diode；The input terminal of the thyristor is connected through the first resistor with external power supply, the crystalline substance
The output head grounding of brake tube, the controlled end of the thyristor is the controlled end for protecting circuit；The moon of first diode
Pole is connected with the input terminal of the thyristor, and the anode of first diode connects through the second resistance and the control module
It connects.
4. Switching Power Supply protective device as described in claim 1, which is characterized in that warning device is additionally provided on shell, it is described
Warning device includes indicator light and buzzer, and indicator light and buzzer are connected respectively with control mainboard.
5. Switching Power Supply protective device as described in claim 1, which is characterized in that shell both sides are equipped with radiating groove, shell
Bottom is equipped with heat dissipation base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625784.2U CN207442435U (en) | 2017-11-28 | 2017-11-28 | Switching Power Supply protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625784.2U CN207442435U (en) | 2017-11-28 | 2017-11-28 | Switching Power Supply protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207442435U true CN207442435U (en) | 2018-06-01 |
Family
ID=62285133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721625784.2U Expired - Fee Related CN207442435U (en) | 2017-11-28 | 2017-11-28 | Switching Power Supply protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207442435U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325290A (en) * | 2021-06-25 | 2021-08-31 | 西安派瑞功率半导体变流技术股份有限公司 | Thyristor life aging screening device for high-voltage direct-current transmission valve |
| CN114142435A (en) * | 2021-10-20 | 2022-03-04 | 深圳安耐特电子有限公司 | Intelligent high-frequency switching power supply |
-
2017
- 2017-11-28 CN CN201721625784.2U patent/CN207442435U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325290A (en) * | 2021-06-25 | 2021-08-31 | 西安派瑞功率半导体变流技术股份有限公司 | Thyristor life aging screening device for high-voltage direct-current transmission valve |
| CN114142435A (en) * | 2021-10-20 | 2022-03-04 | 深圳安耐特电子有限公司 | Intelligent high-frequency switching power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20201128 |