CN208127981U - A kind of DC power supply - Google Patents
A kind of DC power supply Download PDFInfo
- Publication number
- CN208127981U CN208127981U CN201820438442.8U CN201820438442U CN208127981U CN 208127981 U CN208127981 U CN 208127981U CN 201820438442 U CN201820438442 U CN 201820438442U CN 208127981 U CN208127981 U CN 208127981U
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- China
- Prior art keywords
- relay
- power supply
- circuit
- coil
- capacitor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of DC power supplies, belong to power supply technical field.The utility model includes transformer T, rectification filtering unit, battery and relay KA, and rectification filtering unit is made of rectification circuit D1 and C1；One end of transformer T secondary coil is connected with one end of R1 and rectification circuit D1 first input end, the other end of the secondary coil of transformer T is connected with one end of the coil of relay KA, the other end of the coil of relay KA is connected with the other end of R1 all the way, and another way is connected with the second input terminal of rectification circuit D1；The first output end of rectification circuit D1 is connected with one end of one end of C1, one end of the normally-closed contact of relay KA and load, the other end of the normally-closed contact of relay KA is connected with the anode of battery, and the second output terminal of rectification circuit D1 is connected with the other end of the other end of C1, the cathode of battery and load respectively.The utility model can automatic starting storage battery backup power source, and have the function of output short circuit protection and anti-lightning strike surging prevention.
Description
Technical field
The utility model belongs to power supply technical field, more particularly to a kind of DC power supply.
Background technique
Power supply is the power supply basis of electrical equipment, and existing power supply includes communication power supply and direct current supply
Power supply, DC power supply are power supplies relatively conventional currently on the market, and application is relatively broad.
Currently, existing DC power supply function is relatively simple, circuit protection is perfect not enough, there is following lack
Point：
1, when exchanging side failure etc. causes to have a power failure suddenly, it just will have a direct impact on the normal use of electrical equipment, give
The use of user is made troubles, if the DC power supply is used for production unit, serious warp can be brought because of halt production
Ji loss；
2, in the use process of DC power supply, it usually will appear the damage that electrical equipment is caused because of short circuit, sternly
Accident is even resulted in when weight, the life and property to people cause to seriously endanger；
3, in use, part power utilization environment is more severe, and especially in thunderstorm season, thunder and lightning will cause huge
Harm；Although most of buildings are designed with lightning rod, lightning rod can only pre- direct striking thunder prevention, and what powerful electromagnetic field generated
Inductive lightning and pulse voltage can but slip into interior and jeopardize electrical equipment.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of DC power supply.The DC power supply
Can be when exchange pleurapophysis so have a power failure, automatic starting storage battery backup power source to maintain normal power supply, and there is output short-circuit to protect
Protective function and anti-lightning strike surging prevention function.
To achieve the goals above, the utility model adopts the following technical solution：A kind of DC power supply, including transformation
Device T, rectification filtering unit, battery and relay KA, the rectification filtering unit is by rectification circuit D1 and first capacitor C1 group
At；The input terminal of DC power supply is connected with the both ends of the primary coil of transformer T, and the one of the secondary coil of transformer T
End be connected respectively with the first input end of one end of first resistor R1 and rectification circuit D1, the secondary coil of transformer T it is another
One end is connected with one end of the coil of relay KA, and the other end of the coil of relay KA is another with first resistor R1 all the way
End is connected, and another way is connected with the second input terminal of rectification circuit D1；The first output end of rectification circuit D1 is respectively with
One end of one capacitor C1, one end of normally-closed contact of relay KA and one end of load are connected, the normally-closed contact of relay KA
The other end be connected with the anode of battery, the second output terminal of rectification circuit D1 respectively with the other end of first capacitor C1,
The cathode of battery and the other end of load are connected.
The DC power supply further includes output short circuit protection unit.
The output short circuit protection unit includes button AN, relay J1, second resistance R2, the second capacitor C2, third electricity
Hinder R3, the 4th resistance R4 and light emitting diode VD1；It is first with transformer T after button AN is in parallel with the normally opened contact of relay J1
Grade coil is connected in series, and one end of second resistance R2 is connected with the first output end of rectification circuit D1, the other end respectively with after
One end of one end of the coil of electric appliance J1, one end of the 4th resistance R4 and load is connected；The other end of the coil of relay J1
It is connected respectively with one end of one end of the second capacitor C2 and 3rd resistor R3, the other end and light emitting diode of the 4th resistance R4
The anode of VD1 is connected；The other end of second capacitor C2, the other end of 3rd resistor R3, the cathode of light emitting diode VD1 and negative
The other end of load is connected with the second output terminal of rectification circuit D1 respectively.
The DC power supply further includes anti-lightning strike surging prevention unit.
The anti-lightning strike surging prevention unit includes lightning protection decoupling circuit, three varistor lightning protection devices and two lightning protection
Discharging gap, described two lightning protection discharging gaps are set to the output end of DC power supply, lightning protection decoupling circuit and three pressures
Quick resistance lightning protection device is set between output short circuit protection unit and two lightning protection discharging gaps；The lightning protection decoupling circuit is served as reasons
The lc circuit of first inductance L1, the second inductance L2 and third capacitor C3 composition.
Fuse FU is also in series in the input terminal of the DC power supply.
The beneficial effects of the utility model：
1, the DC power supply of the utility model can open automatically when exchanging side failure etc. causes to have a power failure suddenly
Dynamic battery backup power source, to maintain normal power supply；Avoid exchange pleurapophysis so has a power failure influence electrical equipment normal use, give
The use bring of user is inconvenient and production unit is because stop production and bring economic loss；
2, since the DC power supply of the utility model further includes output short circuit protection unit, have output short
Road defencive function；
3, since the DC power supply of the utility model further includes anti-lightning strike surging prevention unit, also have
Anti-lightning strike surging prevention function；
4, the DC power supply structure of the utility model is simple, easy to use, at low cost, easy to promote and utilize.
Detailed description of the invention
Fig. 1 is the circuit diagram of the first embodiment of the DC power supply of the utility model；
Fig. 2 is the circuit of the second embodiment (with output short circuit protection unit) of the DC power supply of the utility model
Schematic diagram；
Fig. 3 is that the 3rd embodiment of the DC power supply of the utility model (has output short circuit protection unit and lightning protection
Hit surging prevention unit) circuit diagram；
In figure：1-rectification filtering unit, 2-output short circuit protection units, 3-anti-lightning strike surging prevention units.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Embodiment one：
As shown in Figure 1, a kind of DC power supply, including transformer T, rectification filtering unit 1, battery and relay
KA, the rectification filtering unit 1 are made of rectification circuit D1 and first capacitor C1；The input terminal and transformer of DC power supply
The both ends of the primary coil of T are connected, one end of the secondary coil of transformer T respectively with one end of first resistor R1 and rectified current
The first input end of road D1 is connected, and the other end of the secondary coil of transformer T is connected with one end of the coil of relay KA,
The other end of the coil of relay KA is connected with the other end of first resistor R1 all the way, and the second of another way and rectification circuit D1
Input terminal is connected；The first output end of rectification circuit D1 normally-closed contact with one end of first capacitor C1, relay KA respectively
One end and one end of load be connected, the other end of the normally-closed contact of relay KA is connected with the anode of battery, rectification
The second output terminal of circuit D1 is connected with the other end of the other end of first capacitor C1, the cathode of battery and load respectively.
Embodiment two：
As shown in Fig. 2, a kind of DC power supply, including transformer T, rectification filtering unit 1, battery, output short-circuit
Protection location 2, fuse FU and relay KA, the rectification filtering unit 1 are made of rectification circuit D1 and first capacitor C1, institute
Stating output short circuit protection unit 2 includes button AN, relay J1, second resistance R2, the second capacitor C2,3rd resistor R3, the 4th
Resistance R4 and light emitting diode VD1；After button AN is in parallel with the normally opened contact of relay J1, with the primary coil of transformer T, straight
The input terminal and fuse FU for flowing power supply are connected in series；One end of the secondary coil of transformer T respectively with first resistor R1
One end be connected with the first input end of rectification circuit D1, the line of the other end of the secondary coil of transformer T and relay KA
One end of circle is connected, and the other end of the coil of relay KA is connected with the other end of first resistor R1 all the way, another way with
The second input terminal of rectification circuit D1 is connected；The first output end of rectification circuit D1 respectively with one end of first capacitor C1,
One end of the normally-closed contact of one end and relay KA of two resistance R2 is connected, the other end and storage of the normally-closed contact of relay KA
The anode of battery is connected, the other end of second resistance R2 respectively with one end of the coil of relay J1, the 4th resistance R4 one
End and one end of load are connected；The other end of the coil of relay J1 respectively with one end of the second capacitor C2 and 3rd resistor R3
One end be connected, the other end of the 4th resistance R4 is connected with the anode of light emitting diode VD1；The second of rectification circuit D1 is defeated
Outlet respectively with the other end of first capacitor C1, the other end of the second capacitor C2,3rd resistor R3 the other end, light emitting diode
The other end of the cathode of VD1, the cathode of battery and load is connected.
Embodiment three：
As shown in figure 3, a kind of DC power supply, including transformer T, rectification filtering unit 1, battery, output short-circuit
Protection location 2, fuse FU, relay KA and anti-lightning strike surging prevention unit 3, the rectification filtering unit 1 is by rectified current
Road D1 and first capacitor C1 composition, the output short circuit protection unit 2 include button AN, relay J1, second resistance R2, second
Capacitor C2,3rd resistor R3, the 4th resistance R4 and light emitting diode VD1；After button AN is in parallel with the normally opened contact of relay J1,
It is connected in series with the primary coil of transformer T, the input terminal of DC power supply and fuse FU；The secondary coil of transformer T
One end be connected respectively with the first input end of one end of first resistor R1 and rectification circuit D1, the secondary coil of transformer T
The other end be connected with one end of the coil of relay KA, the other end of the coil of relay KA is all the way with first resistor R1's
The other end is connected, and another way is connected with the second input terminal of rectification circuit D1；The first output end of rectification circuit D1 is distinguished
It is connected with one end of the normally-closed contact of one end of first capacitor C1, one end of second resistance R2 and relay KA, relay KA
The other end of normally-closed contact be connected with the anode of battery, the other end of the second resistance R2 coil with relay J1 respectively
One end, one end of the 4th resistance R4 and one end of load be connected；The other end of the coil of relay J1 is electric with second respectively
The one end for holding C2 is connected with one end of 3rd resistor R3, the positive phase of the other end and light emitting diode VD1 of the 4th resistance R4
Connection；The second output terminal of rectification circuit D1 is electric with the other end of first capacitor C1, the other end of the second capacitor C2, third respectively
The resistance other end of R3, the cathode of light emitting diode VD1, the cathode of battery and the other end of load are connected；It is described anti-lightning strike
Surging prevention unit 3 includes between lightning protection decoupling circuit, three varistor lightning protection device RV1, RV2, RV3 and two lightning protection electric discharges
Gap GAP1, GAP2, described two lightning protection discharging gap GAP1, GAP2 are set to the output end of DC power supply, lightning protection decoupling
Circuit and three varistor lightning protection devices RV1, RV2, RV3 are set to output short circuit protection unit 2 and two lightning protection discharging gaps
Between GAP1, GAP2；The lightning protection decoupling circuit is the LC electricity being made of the first inductance L1, the second inductance L2 and third capacitor C3
Road.
The DC power supply of the utility model when in use, first presses lower button AN, alternating current is through fuse FU, button AN
Become direct current after filtering to transformer T transformation, then rectified circuit D1 rectification, first capacitor C1 afterwards；At this point, relay KA
Coil obtains electric, and normally-closed contact disconnects, and battery do not power；The coil of relay J1 obtains electric, normally opened contact actuation, originally practical
Novel DC power supply maintains on state, is load supplying.
When the exchange pleurapophysis of the DC power supply of the utility model so has a power failure, the coil losing electricity of relay KA, often
Closed contact is attracted, and the conducting of storage battery power supply circuit is load supplying by battery.
As shown in Fig. 2, when the output end route and connector of the DC power supply of the utility model are shorted short circuit, or it is negative
When carrying short circuit overcurrent, electric current increases, and voltage reduces, until being reduced to zero volt, relay J1 decompression release, normally opened contact is disconnected,
Input power is cut off；After short trouble releasing, lower button AN is pressed again, is powered on.
The DC power supply of the utility model exports direct current outward again after anti-lightning strike surging prevention unit, can have
Effect prevents from being struck by lightning.
The foregoing is merely the embodiments of the present invention, are not intended to limit the protection scope of the utility model.It is all
Any modification, equivalent substitution and improvement made within spirit of the present utility model and principle, extension etc., are all contained in this reality
With in novel protection scope.
Claims (6)
1. a kind of DC power supply, it is characterised in that including transformer T, rectification filtering unit, battery and relay KA, institute
Rectification filtering unit is stated to be made of rectification circuit D1 and first capacitor C1；The input terminal of DC power supply is first with transformer T's
Grade coil both ends be connected, one end of the secondary coil of transformer T respectively with one end of first resistor R1 and rectification circuit D1
First input end be connected, the other end of the secondary coil of transformer T is connected with one end of the coil of relay KA, relay
The other end of the coil of device KA is connected with the other end of first resistor R1 all the way, the second input of another way and rectification circuit D1
End is connected；The first output end of rectification circuit D1 respectively with one end of first capacitor C1, the normally-closed contact of relay KA one
End and one end of load are connected, and the other end of the normally-closed contact of relay KA is connected with the anode of battery, rectification circuit
The second output terminal of D1 is connected with the other end of the other end of first capacitor C1, the cathode of battery and load respectively.
2. DC power supply according to claim 1, it is characterised in that the DC power supply further includes that output is short
Road protection location.
3. DC power supply according to claim 2, it is characterised in that the output short circuit protection unit includes button
AN, relay J1, second resistance R2, the second capacitor C2,3rd resistor R3, the 4th resistance R4 and light emitting diode VD1；Button AN
After in parallel with the normally opened contact of relay J1, it is connected in series with the primary coil of transformer T, one end of second resistance R2 and rectification
The first output end of circuit D1 is connected, the other end respectively with one end of the coil of relay J1, the 4th resistance R4 one end and
One end of load is connected；The other end of the coil of relay J1 respectively with one end of the second capacitor C2 and 3rd resistor R3 one
End is connected, and the other end of the 4th resistance R4 is connected with the anode of light emitting diode VD1；The other end of second capacitor C2,
The other end of the other end of three resistance R3, the cathode of light emitting diode VD1 and load is exported with the second of rectification circuit D1 respectively
End is connected.
4. DC power supply according to claim 1, it is characterised in that the DC power supply further includes anti-lightning strike
Surging prevention unit.
5. DC power supply according to claim 4, it is characterised in that the anti-lightning strike surging prevention unit includes
Lightning protection decoupling circuit, three varistor lightning protection devices and two lightning protection discharging gaps, described two lightning protection discharging gaps are set to
The output end of DC power supply, lightning protection decoupling circuit and three varistor lightning protection devices be set to output short circuit protection unit with
Between two lightning protection discharging gaps；The lightning protection decoupling circuit is by the first inductance L1, the second inductance L2 and third capacitor C3 group
At lc circuit.
6. DC power supply according to claim 1, it is characterised in that the DC power supply input terminal also
It is in series with fuse FU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820438442.8U CN208127981U (en) | 2018-03-29 | 2018-03-29 | A kind of DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820438442.8U CN208127981U (en) | 2018-03-29 | 2018-03-29 | A kind of DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208127981U true CN208127981U (en) | 2018-11-20 |
Family
ID=64193336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820438442.8U Expired - Fee Related CN208127981U (en) | 2018-03-29 | 2018-03-29 | A kind of DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208127981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797964A (en) * | 2019-05-29 | 2020-02-14 | 湖北中科能能源技术有限公司 | Direct-current power supply circuit applied to photovoltaic power station |
-
2018
- 2018-03-29 CN CN201820438442.8U patent/CN208127981U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797964A (en) * | 2019-05-29 | 2020-02-14 | 湖北中科能能源技术有限公司 | Direct-current power supply circuit applied to photovoltaic power station |
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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: 20181120 Termination date: 20210329 |