CN202009243U - Anti-electromagnetic interference equipment power supply system - Google Patents
Anti-electromagnetic interference equipment power supply system Download PDFInfo
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- CN202009243U CN202009243U CN2011200397342U CN201120039734U CN202009243U CN 202009243 U CN202009243 U CN 202009243U CN 2011200397342 U CN2011200397342 U CN 2011200397342U CN 201120039734 U CN201120039734 U CN 201120039734U CN 202009243 U CN202009243 U CN 202009243U
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Abstract
The utility model relates to a power supply system, especially relates to and discloses an anti-electromagnetic interference equipment power supply system, comprising an external input power supply, a pre-stage anti-electromagnetic interference circuit, a post-stage stable output circuit and an output power supply, which are connected in sequence. The pre-stage anti-interference circuit includes a surge protection circuit, a current limliting circuit, a filter circuit and a voltage stabilizing circuit, which are connected sequentially. The post-stage stable output power supply includes a storage battery charging circuit, a storage battery and an inverter circuit, which are connected sequentially. The output end and input end of the storage battery are connected with a protection detection circuit, respectively. The anti-electromagnetic interference equipment power supply system can filter various interferences, and supply power continuously by using the storage battery; can provide safe and stable power supply to a target device, thus fundamentally eliminating fault due to external power supply influence.
Description
Technical field
The utility model relates to a kind of electric power system, relates in particular to a kind of power devices system of anti-electromagnetic interference.
Background technology
Under the condition, the power supply of electronic equipment ensures by carrying generator that mainly generator itself just suffers the external electromagnetic field interference of (comprising thunder and lightning) easily in the open air; What transmission line often adopted in addition is normal power cord, does not generally contain screen, and this also very easily is interfered.Like this, the power supply of importing each class of electronic devices is dangerous often and unsettled, and surge, high pressure surging, temporary overvoltage, voltage sag, noise jamming, frequency drift, brownout, power interruptions etc. all have the possibility of generation.These can make the power module of equipment can't operate as normal, and program running mistake, loss of data, timing error, deadlock can occur when operation, restart without reason, even cause the permanent damage of equipment.
Present no corresponding bibliographical information, can abominable in the open air electromagnetic environment under, for equipment provides safety, reliable, the power supply that continues, the safety of certain support equipment.
Summary of the invention
There is defective a little less than the anti-electromagnetic interference of power devices system at prior art, the utility model provides under a kind of can be in the open air abominable electromagnetic environment, for equipment provides power supply safe, reliable, that continue, the power devices system of the anti-electromagnetic interference of support equipment safety really.
For achieving the above object, the utility model adopts following technical scheme: the power devices system of anti-electromagnetic interference comprises the external world's input power supply, prime anti-jamming circuit, the stable output circuit of back level, the out-put supply that connect successively.The prime anti-jamming circuit effectively filtering external world is imported high-frequency, high voltage, the interference of electric current greatly that exists in the power supply; External world's input power supply after level stable output circuit in back is handled the prime anti-jamming circuit is stablized, continuity is handled, and the out-put supply of steady and continuous is provided for external equipment.
As preferably, described prime anti-jamming circuit comprises surge protecting circuit, current-limiting circuit, filter circuit, the voltage stabilizing circuit that connects successively.Surge protecting circuit is imported power supply with the external world and is carried out necessary discharge and clamp down on, with voltage and current clamp built in a suitable scope; Electric current after current-limiting circuit is handled surge protecting circuit further limits (it is following to be restricted to 10A); High fdrequency components such as high order harmonic component after filter circuit is handled current-limiting circuit limit; Voltage stabilizing circuit is further adjusted voltage.
As preferably, described surge protecting circuit comprises chopped-off head surge protecting circuit, decoupling circuit, secondary surge protecting circuit.Chopped-off head surge protecting circuit and secondary surge protecting circuit can effectively limit transient overvoltage and divide to walk the surge electric current; Decoupling circuit can effectively be eliminated the parasitic couplings between the circuit network.
As preferably, the stable out-put supply of described back level comprises battery charging circuit, storage battery, the inverter circuit that connects successively.When storage battery satisfies certain voltage conditions, provide 220v output voltage by inverter circuit, when storage battery is lower than certain voltage conditions, external world's input power supply after battery charging circuit is handled by the prime anti-jamming circuit charges to storage battery, when reaching certain voltage conditions, charging stops.
As preferably, the input/output terminal of described storage battery all is connected with the protection testing circuit.The protection testing circuit detects the voltage of storage battery, if be lower than the magnitude of voltage of setting, then charges by battery charging circuit, if overvoltage protection is promptly carried out in overvoltage, charging stops.
As preferably, the power devices system of described anti-electromagnetic interference also comprises metal box, and described prime anti-jamming circuit, the stable output circuit of back level, out-put supply are encapsulated in the metal box casing.Described metal box can shield interference.
As preferably, each ground wire and the metal box casing of described extraneous input power supply, prime anti-jamming circuit, the stable output circuit of back level, out-put supply weld, and are connected with the equipotential line of equipment.Can reduce potential difference effectively.
As preferably, described metal box front is provided with the aperture that holds switch, and aperture is provided with movably metal runner outward.When not needing to use switch, block aperture, prevent that extraneous radiation from seeing through aperture, the box house circuit is produced disturb with metal runner.
As preferably, adopt the power line of band shielding to be connected between described out-put supply and the equipment.To prevent that out-put supply from being disturbed once more.
The power devices system of anti-electromagnetic interference of the present utility model can filter various interference and utilize the storage battery continued power; Can fundamentally stop to cause the fault of equipment for target device provides safety, stable power owing to the influence of external power supply.
Description of drawings
Fig. 1 is the structural representation of embodiment.
Fig. 2 is the structural representation of embodiment metal box.
Embodiment
Below in conjunction with Fig. 1, Fig. 2 and embodiment the utility model is described further.
The power devices system of anti-electromagnetic interference, shown in Fig. 1-2, comprise the external world's input power supply 1, prime anti-jamming circuit 2, the stable output circuit 3 of back level, the out-put supply 4 that connect successively, also comprise metal box 16, described prime anti-jamming circuit 2, the stable output circuit 3 of back level, out-put supply 4 all are encapsulated in metal box 16 casings, each ground wire and the welding of metal box 16 casings of extraneous input power supply 1, prime anti-jamming circuit 2, the stable output circuit 3 of back level, out-put supply 4 are connected with the equipotential line of equipment.Metal box 16 is a casing with cover, is convenient to maintenance and adjustment in the casing, fixes with screw; The aperture 17 that diameter is 2cm is left in the casing front, be used to hold the switch of control system, this switch is a face contact formula switch, can cut-off by aperture 17, leave removable metal runner 18 outside the aperture 17, when not needing to use switch, block aperture 17 with draw runner 18, prevent that extraneous radiation from seeing through aperture 17, the box house circuit is produced disturb; Box back also leaves aperture, only for input power cord and the turnover of out-put supply line; All circuit have heat radiating fins, and fin contacts with heat dissipating silicone grease with metal box 16 casings, but completely cuts off on being electrically connected.Adopt the power line of band shielding to be connected between described out-put supply 4 and the equipment.
Described prime anti-jamming circuit 2 comprises surge protecting circuit 5, current-limiting circuit 6, filter circuit 7, the voltage stabilizing circuit 8 that connects successively.Described surge protecting circuit 5 comprises chopped-off head surge protecting circuit 9, decoupling circuit 10, secondary surge protecting circuit 11.The stable out-put supply 3 of described back level comprises battery charging circuit 12, storage battery 13, the inverter circuit 14 that connects successively.The input/output terminal of described storage battery 13 all is connected with protection testing circuit 15.
Extraneous input power supply 1 is subjected to becoming high voltage (can reach the KV level), big electric current (can reach the KA level) after the strong electromagnetic, and carries high order harmonic component, and this class power supply is transported to equipment, as easy as rolling off a log equipment is caused damage.The utility model will be subjected to external world's input power supply 1 effect through chopped-off head surge protecting circuit 9, decoupling circuit 10, secondary surge protecting circuit 11 after the strong electromagnetic, effective restriction transient overvoltage and divide to walk the surge electric current and eliminate parasitic couplings between the circuit network, the external world's input power supply 1 that is subjected to after the strong electromagnetic has been carried out necessary discharge and has clamped down on, with voltage and current clamp built in a suitable scope; 6 pairs of electric currents of current-limiting circuit further limit (it is following to be restricted to 10A); Filter circuit limits high fdrequency components such as high order harmonic component; Voltage stabilizing circuit is further adjusted voltage.So far, the input power supply is relatively safe.
If extraneous input power supply 1 is provided by generator, under the strong electromagnetic effect, generator may take place not work or out-put supply situation off and on so.In this case, utilize storage battery and inverter circuit that equipment is powered stable, lasting, reliable power supply can be provided.
The protection testing circuit detects the voltage of storage battery, if be lower than the magnitude of voltage of setting, then by battery charging circuit storage battery is charged, if overvoltage protection is promptly carried out in overvoltage, charging stops, and storage battery can guarantee in the required voltage scope.Become 220v voltage to give out-put supply the voltage transitions of storage battery by inverter circuit, can stablize, output constantly.
Being preferred embodiment of the present utility model only in sum, is not to be used for limiting practical range of the present utility model, and all equivalences of doing according to the content of the application's claim change and modify, and all should be technology category of the present utility model.
Claims (9)
1. the power devices system of anti-electromagnetic interference is characterized in that: comprise the external world's input power supply (1), prime anti-jamming circuit (2), back level stable output circuit (3), the out-put supply (4) that connect successively.
2. the power devices system of anti-electromagnetic interference according to claim 1 is characterized in that: described prime anti-jamming circuit (2) comprises surge protecting circuit (5), current-limiting circuit (6), filter circuit (7), the voltage stabilizing circuit (8) that connects successively.
3. the power devices system of anti-electromagnetic interference according to claim 2, it is characterized in that: described surge protecting circuit (5) comprises chopped-off head surge protecting circuit (9), decoupling circuit (10), secondary surge protecting circuit (11).
4. the power devices system of anti-electromagnetic interference according to claim 1 is characterized in that: the described back stable output circuit of level (3) comprises battery charging circuit (12), storage battery (13), the inverter circuit (14) that connects successively.
5. the power devices system of anti-electromagnetic interference according to claim 4 is characterized in that: the input/output terminal of described storage battery (13) all is connected with protection testing circuit (15).
6. the power devices system of anti-electromagnetic interference according to claim 1, it is characterized in that: also comprise metal box (16), described prime anti-jamming circuit (2), back level stable output circuit (3), out-put supply (4) are encapsulated in metal box (16) casing.
7. the power devices system of anti-electromagnetic interference according to claim 6, it is characterized in that: each ground wire and the welding of metal box (16) casing of described extraneous input power supply (1), prime anti-jamming circuit (2), back level stable output circuit (3), out-put supply (4) are connected with the equipotential line of equipment.
8. the power devices system of anti-electromagnetic interference according to claim 7, it is characterized in that: described metal box (16) front is provided with the aperture (17) that holds switch, the outer movably metal runner (18) that is provided with of aperture (17).
9. the power devices system of anti-electromagnetic interference according to claim 1 is characterized in that: adopt the power line of band shielding to be connected between described out-put supply (4) and the equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200397342U CN202009243U (en) | 2011-02-16 | 2011-02-16 | Anti-electromagnetic interference equipment power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200397342U CN202009243U (en) | 2011-02-16 | 2011-02-16 | Anti-electromagnetic interference equipment power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202009243U true CN202009243U (en) | 2011-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200397342U Expired - Fee Related CN202009243U (en) | 2011-02-16 | 2011-02-16 | Anti-electromagnetic interference equipment power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202009243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834841A (en) * | 2017-11-06 | 2018-03-23 | 南京帕维克新能源科技有限公司 | A kind of electromagnetism interference element applied to high power DC charging module |
-
2011
- 2011-02-16 CN CN2011200397342U patent/CN202009243U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834841A (en) * | 2017-11-06 | 2018-03-23 | 南京帕维克新能源科技有限公司 | A kind of electromagnetism interference element applied to high power DC charging module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20150216 |
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| EXPY | Termination of patent right or utility model |