CN202550615U - DC-DC (Direct Current) input unit for discharging module - Google Patents
DC-DC (Direct Current) input unit for discharging module Download PDFInfo
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- CN202550615U CN202550615U CN2012201268697U CN201220126869U CN202550615U CN 202550615 U CN202550615 U CN 202550615U CN 2012201268697 U CN2012201268697 U CN 2012201268697U CN 201220126869 U CN201220126869 U CN 201220126869U CN 202550615 U CN202550615 U CN 202550615U
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Abstract
The utility model relates to the technical field of power grids, in particular to a DC-DC (Direct Current) input unit. The DC-DC input unit for a discharging module comprises a DC-DC converter, wherein the DC-DC converter comprises a converter input end, a converter output end, a full-bridge circuit and a transformer isolation circuit; an input end of the full-bridge circuit is connected with an input end of the transformer; an output end of the full-bridge circuit is connected with the transformer isolation circuit; and an output end of the transformer isolation circuit is connected with an output end of the converter. Due to the adoption of the technical scheme, the DC-DC input unit disclosed by the utility model is used for a discharging device for a storage battery pack, can be used for effectively recovering electric energy of the storage battery pack, saving energy sources and reducing the investment of the equipment and maintenance expenses of the equipment.
Description
Technical field
The utility model relates to the electric power network technique field, is specifically related to a kind of DC input unit.
Background technology
Dc operation power supply system is the power supply that do not have a power failure of important loads such as protective relaying device in the electric power system, signalling, lighting device, and the reliability of its power supply directly influences the safe operation of transformer station.The back-up source of direct current operative power source generally adopts batteries, and as the core of DC power system, batteries has guaranteed that system still can normal operation when power failure or electric network fault.From a large amount of running examples, improper to the working service of storage battery, will cause batteries to use the back capacity to be significantly less than nominal capacity in short-term, cause the UPS uninterrupted power supply time obviously to shorten.Storage battery regularly being carried out balance charge/discharge safeguard, is to prolong storage battery useful life and guarantee one of requisite means of the normal work of storage battery.
At present, usually adopt the discharge of serial connection load resistance in the discharge maintenance process of large-capacity battery, convert the electric energy of accumulators store into thermal energy consumption and fall, bring that energy dissipation, discharge precision are low, detachment system, lack problem such as protection.
The utility model content
The purpose of the utility model is, a kind of DC-DC input unit of discharge module is provided, and solves above technical problem.
The technical problem that the utility model solved can adopt following technical scheme to realize:
The DC-DC input unit of discharge module; Comprise a DC-DC converter, said DC-DC converter comprises a converter input, a converter output terminal, it is characterized in that; Said DC-DC converter also comprises a full-bridge circuit, a transformer isolation circuit; The input of said full-bridge circuit connects said converter input, and the output of said full-bridge circuit connects said transformer isolation circuit, and the output of said transformer isolation circuit connects said converter output terminal.
The DC-DC converter using full-bridge circuit of the utility model converts the input direct current of converter input into the high-frequency ac pulse; Rectification outputs to converter output terminal behind transformer isolation circuit isolation boosting again, and converter output terminal can be connected with other circuit through dc bus.
The utility model is used for the electric discharge device of batteries; The converter output terminal of batteries connects the converter input of the DC-DC converter of the utility model through an input EMI circuit; The converter output terminal of DC-DC converter connects a DC-AC converter; The DC-AC converter connects an output EMI circuit, and output EMI circuit connects outside mains supply module.Through foregoing circuit with the electric energy in the batteries through inversion; Feedback is discharged to the mains supply module; Avoided the waste of energy, realized that also storage battery is regularly carried out balance charge/discharge to be safeguarded, effectively prolonged storage battery useful life, guaranteed that storage battery normally works.
The pulse-width modulation end of said full-bridge circuit connects a control module, and the collection terminal of said control module connects a voltage acquisition transducer, and said voltage acquisition transducer connects said converter output terminal.The utility model is through voltage acquisition sensor acquisition output voltage, and control module is regulated the pulsewidth of full-bridge circuit through output voltage, and then reaches the purpose of stable DC voltage.
Said voltage acquisition transducer preferably adopts voltage transformer.
Said DC-DC converter also comprises a filter circuit, and said filter circuit is arranged between said converter input and the said full-bridge circuit.The effect of filter circuit is to remove high-frequency noise, makes it can not be leaked to the outside from the converter input of DC-DC converter.
Beneficial effect: owing to adopt technique scheme; The utility model is used for the electric discharge device of batteries; Can effectively reclaim electric energy, the energy savings of batteries, can reduce the expense of equipment investment, plant maintenance again, be applicable to that power plant, transformer station, communication machine room direct current cabinet etc. are furnished with in the distribution system of large-capacity battery group; Be used for the activation of batteries and periodically check the capacity discharge, have application value widely.
Description of drawings
Fig. 1 is that the circuit of the utility model connects sketch map;
Fig. 2 is the enforcement circuit diagram of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1; The DC-DC input unit of discharge module comprises a DC-DC converter, and the DC-DC converter comprises a converter input, a converter output terminal; The DC-DC converter also comprises a full-bridge circuit 11, a transformer isolation circuit 12; The input of full-bridge circuit 11 connects the converter input, and the output of full-bridge circuit 11 connects transformer isolation circuit 12, and the output of transformer isolation circuit 12 connects converter output terminal.The DC-DC converter using full-bridge circuit 11 of the utility model converts the input direct current of converter input into the high-frequency ac pulse; Rectification outputs to converter output terminal behind transformer isolation circuit 12 isolation boostings again, and converter output terminal can be connected with other circuit through dc bus.
The pulse-width modulation end of full-bridge circuit 11 connects a control module 2, and the collection terminal of control module 2 connects a voltage acquisition transducer, and the voltage acquisition transducer connects converter output terminal.The voltage acquisition transducer preferably adopts voltage transformer.The utility model is through voltage acquisition sensor acquisition output voltage, and control module 2 is regulated the pulsewidth of full-bridge circuit 11 through output voltage, and then reaches the purpose of stable DC voltage.
The DC-DC converter also comprises a filter circuit 13, and filter circuit 13 is arranged between converter input and the full-bridge circuit 11.The effect of filter circuit 13 is to remove high-frequency noise, makes it can not be leaked to the outside from the converter input of DC-DC converter.
Execution mode one: with reference to Fig. 2, the utility model is used for the inversion feedback electric discharge device 4 of batteries 3.The power output end of batteries 3 discharges to mains supply module 5 through the inversion feedback of inversion feedback electric discharge device 4; Avoided the waste of energy; Realized that also storage battery is regularly carried out balance charge/discharge to be safeguarded, effectively prolonged storage battery useful life, guaranteed that storage battery normally works.
Inversion feedback electric discharge device 4 comprises an input EMI circuit, and input EMI circuit connects the DC-DC converter of the utility model, and the DC-DC converter connects a DC-AC converter, and the DC-AC converter connects an output EMI circuit.Input EMI circuit connects the power output end of batteries 3, and output EMI circuit connects outside mains supply module 5.Through foregoing circuit with the electric energy in the batteries through inversion; Feedback is discharged to mains supply module 5; Avoided the waste of energy, realized that also storage battery is regularly carried out balance charge/discharge to be safeguarded, effectively prolonged storage battery useful life, guaranteed that storage battery normally works.
Inversion feedback electric discharge device 4 is through the power output end of a discharge input switch 41 connection batteries 3, and inversion feedback electric discharge device 4 connects the power input of mains supply module 5 through a discharge output switch 42.After wiring was accomplished, the discharge input switch 41 that closes, discharge output switch 42 were realized the feedback of electric energy, can guarantee the safe and reliable of wiring like this.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (4)
1. the DC-DC input unit of discharge module; Comprise a DC-DC converter, said DC-DC converter comprises a converter input, a converter output terminal, it is characterized in that; Said DC-DC converter also comprises a full-bridge circuit, a transformer isolation circuit; The input of said full-bridge circuit connects said converter input, and the output of said full-bridge circuit connects said transformer isolation circuit, and the output of said transformer isolation circuit connects said converter output terminal.
2. the DC-DC input unit of discharge module according to claim 1; It is characterized in that; The pulse-width modulation end of said full-bridge circuit connects a control module, and the collection terminal of said control module connects a voltage acquisition transducer, and said voltage acquisition transducer connects said converter output terminal.
3. the DC-DC input unit of discharge module according to claim 2 is characterized in that, said voltage acquisition transducer adopts voltage transformer.
4. according to the DC-DC input unit of claim 1,2 or 3 described discharge modules, it is characterized in that said DC-DC converter also comprises a filter circuit, said filter circuit is arranged between said converter input and the said full-bridge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201268697U CN202550615U (en) | 2012-03-29 | 2012-03-29 | DC-DC (Direct Current) input unit for discharging module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201268697U CN202550615U (en) | 2012-03-29 | 2012-03-29 | DC-DC (Direct Current) input unit for discharging module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202550615U true CN202550615U (en) | 2012-11-21 |
Family
ID=47171183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201268697U Expired - Lifetime CN202550615U (en) | 2012-03-29 | 2012-03-29 | DC-DC (Direct Current) input unit for discharging module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202550615U (en) |
-
2012
- 2012-03-29 CN CN2012201268697U patent/CN202550615U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |