CN202455274U - Novel high-power direct current communication power supply - Google Patents
Novel high-power direct current communication power supply Download PDFInfo
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- CN202455274U CN202455274U CN2012200076755U CN201220007675U CN202455274U CN 202455274 U CN202455274 U CN 202455274U CN 2012200076755 U CN2012200076755 U CN 2012200076755U CN 201220007675 U CN201220007675 U CN 201220007675U CN 202455274 U CN202455274 U CN 202455274U
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Abstract
The utility model discloses a novel high-power direct current communication power supply, which mainly comprises a main circuit unit, a circuit control unit and a circuit protection unit, wherein the main circuit unit comprises an input circuit, a power conversion circuit and an output circuit, and has a bridge type topological structure; a TL494 chip is used by the circuit control unit; and the circuit protection unit comprises a circuit structure which is used for preventing lightning, inputting over-current, outputting the over-current, protecting over-voltage, protecting overload, limiting and adjusting output current and protecting temperatures. The high-power direct current communication power supply is stable, safe and reliable in power supply and high in energy conversion efficiency which is up to over 93%; the working frequency is up to 100KHz; the output power is up to 1,000W; and the high-power direct current communication power supply can fully meet the power supply requirements of communication equipment in the developing process.
Description
Technical field
The utility model relates to direct-current switch power supply, especially relates to a kind of novel high power DC communication power supply, belongs to high-power extraordinary direct-current switch power supply technology
field.
Background technology
The mobile communication equipment remote electric power system is the powerup issue that can't solve communication apparatus to existing mobile base station electric power system, the new class power supply product that occurs for the power supply quality that improves system.
The mobile base station remote electric power system is made up of local side apparatus and remote equipment, is for communication apparatus provides the remote power feeding power supply, substitutes civil power or other supply power modes.It can be with the flow to communication apparatus of electric energy stable in the communication machine room through photoelectricity composite cable, twisted pair wire or electric power cable ultra-low loss, for equipment provides non-maintaining power supply under 24 hours, stable, the mal-condition.Become the first-selected powering mode of 3G network.Powerup issue such as can solve simultaneously also that the addressing of a plurality of industry erection unit such as communication, security protection, gate control system, traffic, mining is difficult, equipment leakage switch tripping operation under the mal-condition, battery often must maintenances, local power failure equipments suspension, power supply distance are far away,
The power supply of mobile base station remote electric power system is treated directly to give the communication apparatus power supply of a distant place or incoming end through photoelectricity composite cable or power line.Do not receive the influence of any power-off condition of communication apparatus local (incoming end zone), can be described as permanent power supply with respect to the indoor set of power consumption equipment.Effectively stop the fault of power failure, increased the work utilization rate of communication apparatus.
The DC equipment power supply does not rely on local civil power, no optional equipment and construction, and wiring is simple, not limited by geographical environment, is convenient to construction and addressing.
Mobile base station remote electric power system and civil power are isolated fully, and suspending with the earth does not constitute the loop, do not have the electric leakage risk, and power supply independence is strong.Greatly reduce maintenance cost and maintenance difficulties.
The mobile base station remote electric power system does not receive the complicated load variations of local civil power, changes power station variation and produce overtension or low excessively round the clock; When not receiving local main equipment opening and closing and produce interference, harmonic wave, flickering and surge; The direct thunder of stopping in the local complicated electric power networks damages communication apparatus with the induction thunder.Direct current remote power feeding network is totally single, and supply power voltage is stable, prolongs the communication apparatus life-span, reduces rate of breakdown.
The shortcoming of existing market product
Because the development time of mobile communication power supply is not long; Product category is few, the problem that existing market product ubiquity that power is little, volume is big, efficient is not high, and can not multi-machine parallel connection; Along with developing rapidly of mobile communication cause; The power of product, reliability, volume etc. there are increasingly high requirement,, have influenced stability, the reliability of whole mobile communication remote electric power system owing to there is above-mentioned problem; Power supply producer is all in positive research new technology, to satisfy the growth requirement of mobile communication both at home and abroad.
Summary of the invention
The purpose of the utility model is to overcome the deficiency in the existing direct current communication power supply technology, and " a kind of novel high power DC communication power supply " is provided, and the utility model circuit structure design is reasonable, cost is low, power is big, and power supply is stable, safety, reliable.
For realizing above-mentioned purpose, the technical scheme that the utility model is taked is: a kind of novel high power DC communication power supply, mainly form by main circuit unit, circuit control unit, circuit protection unit.Said main circuit unit comprises input circuit, power conversion circuit and output circuit, is the bridge type topology structure.Said circuit control unit adopts the TL494 chip, the corresponding connection of input of controlled feedback sample signal output part and TL494 chip, and the TL494 chip output passes through the corresponding connection with the switching tube input of drive signal amplifying device.Said circuit protection unit comprises anti-thunderbolt, input overcurrent, output overcurrent, overvoltage protection, overload protection, output current restriction adjusting and temperature protection circuit structure.
Said bridge type topology structure is specially full-bridge topologies; Its dc power output end is connected with EMI filter circuit, switching tube circuit, separated straight soft starting circuit, high frequency transformer, high-frequency rectification circuit, energy-storage units and the filter circuit of reaching through the anti-reverse unit of lightning protection successively successively in proper order from beginning to end, and its output circuit is the totem-pote circuit structure.
Said TL494 chip is the TL494 voltage-type control chip of recommending output.
Said switching tube circuit adopts the full bridge circuit structure.
Said circuit protection unit, its anti-thunderbolt protection for simultaneously the power supply input just and negative, input just and ground, input is negative and ground between cross-over connection anti-thunder tube structure.It imports overcurrent protection, realizes through the installation insurance silk.Output feedback sample signal gets into TL494 control chip input through adjustment and relatively, realizes that to circuit overloads, overcurrent protection, output current limiting is regulated, and said temperature protection circuit is made up of ambient temperature protection in switching tube temperature protection and the cabinet.
Said energy-storage units is realized by the energy storage inductor that setting is connected across high-frequency rectification circuit and filter circuit.
Capacitance through with transformer leakage inductance resonance, realize the soft switch circuit structure.
The principle of the utility model high power DC communication power supply circuit design and the reasons are as follows:
Main circuit unit: input circuit adopts the anti-reverse unit of lightning protection, absorbs the thunderbolt residual voltage, is not damaged with the protection switch power supply; Electromagnetic interface filter: anti-electromagnetic interference;
Circuit for power conversion: form by switching tube full-bridge topological sum high frequency transformer; Simultaneously by capacitance through with transformer leakage inductance resonance, realize the soft switch circuit structure, use its energy conversion efficiency of this circuit structure high; Can reach more than 93%, operating frequency reaches 100KHz.
Output circuit adopts totem power amplification circuit structure, further effectively improves this power supply output power.
Energy-storage units is realized by the energy storage inductor that setting is connected across high-frequency rectification circuit and filter circuit, and is stable further to make electric power output voltage.
Control unit: adopt PWM generator TL494 pulse width modulation controlled chip, can effectively realize the required whole controlled function of the utility model, the combined circuit protected location is realized stable, safety, reliable that this power supply is supplied power.
The utility model is compared with existing direct current communication power supply has following advantage:
1. the utility model circuit structure design is reasonable, cost is low, power is big, and volume is little, and is in light weight, and power supply is stable, safety, reliable.
2. adopt full-bridge topologies because of the utility model main circuit unit; Its energy conversion efficiency is high, can reach more than 93%, and operating frequency reaches 100KHz; Adopt totem power amplification circuit structure because of output circuit again; Its power supply can obtain bigger power output, and power output can reach 1000w, to satisfy the power demands of communication apparatus.
3. adopt PWM generator TL494 pulse width modulation controlled chip to do control and defencive function generally speaking; The present invention is on this basis; Use TL494 to combine the method for controllable silicon BT169D, realize protections such as short circuit, overcurrent, make defencive function more complete, reliable.Make power supply run into any rough sledding, can both turn-off output voltage rapidly, thereby the protection communication apparatus is not damaged.
Description of drawings
Fig. 1 is the utility model syndeton block diagram.
Fig. 2 is the electric principle block diagram of the utility model.
Fig. 3 is the electric principle block diagram of the anti-thunderbolt of the utility model.
Embodiment
The utility model is described further through non-limiting example below in conjunction with accompanying drawing.
Embodiment
This high power DC communication power supply is shown in Fig. 1, Fig. 2, Fig. 3; A kind of novel high power DC communication power supply; Mainly form by main circuit unit, circuit control unit, circuit protection unit; Said main circuit unit comprises input circuit, power conversion circuit and output circuit; Be the bridge type topology structure, said circuit control unit adopts the TL494 chip, the corresponding connection of input of controlled feedback sample signal output part and TL494 chip; The TL494 chip output is through the corresponding connection with the switching tube input of drive signal amplifying device, and said circuit protection unit comprises that anti-thunderbolt, input overcurrent, output overcurrent, overvoltage protection, overload protection, output current limit and regulate and the temperature protection circuit structure.
Said bridge type topology structure is specially full-bridge topologies; Its dc power output end is connected with EMI filter circuit, switching tube circuit, separated straight soft starting circuit, high frequency transformer, high-frequency rectification circuit, energy-storage units and the filter circuit of reaching through the anti-reverse unit of lightning protection successively successively in proper order from beginning to end, and its output circuit is the totem-pote circuit structure.
Said TL494 chip is the TL494 voltage-type control chip of recommending output.
Said switching tube circuit adopts the full bridge circuit structure.
Said circuit protection unit; Its anti-thunderbolt protection for simultaneously the power supply input just and negative, input just and ground, input is negative and ground between cross-over connection anti-thunder tube structure, it imports overcurrent protection, realizes through the installation insurance silk; Output feedback sample signal gets into TL494 control chip input through adjustment and relatively; Realization is to circuit overloads, overcurrent protection, and output current limiting is regulated, and said temperature protection circuit is made up of ambient temperature protection in switching tube temperature protection and the cabinet.Be through on the switching tube fin and at the cabinet inwall, being close to temperature sensor collecting temperature feedback signal respectively, implementing protection through chip computing and interlock circuit.
Said energy-storage units is realized by the energy storage inductor that setting is connected across high-frequency rectification circuit and filter circuit.
Capacitance through with transformer leakage inductance resonance, realize the soft switch circuit structure.
Main each device model in the circuit: switching tube IRFP460, high-frequency rectification FEP30GP,
Controller chip TL494, short-circuit protection BT169D, overcurrent protection BT169D,
Overvoltage protection TL431.All can buy in market.
In sum, the utility model circuit structure design is reasonable, cost is low, power is big, and volume is little; In light weight, power supply is stable, safety, reliable, and its energy conversion efficiency is high; Can reach more than 93%, operating frequency reaches 100KHz, and power supply can obtain bigger power output; Power output can reach 1000W, can satisfy the power demands of developing communication apparatus fully.
Claims (7)
1. novel high power DC communication power supply; Mainly form by main circuit unit, circuit control unit, circuit protection unit; It is characterized in that; Said main circuit unit comprises input circuit, power conversion circuit and output circuit; Be the bridge type topology structure, said circuit control unit adopts the TL494 chip, the corresponding connection of input of controlled feedback sample signal output part and TL494 chip; The TL494 chip output is through the corresponding connection with the switching tube input of drive signal amplifying device, and said circuit protection unit comprises that anti-thunderbolt, input overcurrent, output overcurrent, overvoltage protection, overload protection, output current limit and regulate and the temperature protection circuit structure.
2. a kind of novel high power DC communication power supply according to claim 1; It is characterized in that; Said bridge type topology structure is specially full-bridge topologies; Its dc power output end is connected with EMI filter circuit, switching tube circuit, separated straight soft starting circuit, high frequency transformer, high-frequency rectification circuit, energy-storage units and the filter circuit of reaching through the anti-reverse unit of lightning protection successively successively in proper order from beginning to end, and its output circuit is the totem-pote circuit structure.
3. a kind of novel high power DC communication power supply according to claim 1 is characterized in that, said TL494 chip is the TL494 voltage-type control chip of recommending output.
4. a kind of novel high power DC communication power supply according to claim 2 is characterized in that, said switching tube circuit adopts the full bridge circuit structure.
5. a kind of novel high power DC communication power supply according to claim 1; It is characterized in that, said circuit protection unit, its anti-thunderbolt protection for simultaneously the power supply input just and negative, input just and ground, input is negative and ground between cross-over connection anti-thunder tube structure; It imports overcurrent protection; Realize that through the installation insurance silk output feedback sample signal gets into TL494 control chip input through adjustment and relatively, realizes circuit overloads, overcurrent protection; Output current limiting is regulated, and said temperature protection circuit is made up of ambient temperature protection in switching tube temperature protection and the cabinet.
6. a kind of novel high power DC communication power supply according to claim 2 is characterized in that, said energy-storage units is realized by the energy storage inductor that setting is connected across high-frequency rectification circuit and filter circuit.
7. a kind of novel high power DC communication power supply according to claim 2 is characterized in that, capacitance through with transformer leakage inductance resonance, realize the soft switch circuit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200076755U CN202455274U (en) | 2012-01-10 | 2012-01-10 | Novel high-power direct current communication power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200076755U CN202455274U (en) | 2012-01-10 | 2012-01-10 | Novel high-power direct current communication power supply |
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| Publication Number | Publication Date |
|---|---|
| CN202455274U true CN202455274U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200076755U Expired - Fee Related CN202455274U (en) | 2012-01-10 | 2012-01-10 | Novel high-power direct current communication power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207810A (en) * | 2018-02-28 | 2019-09-06 | 常州路航轨道交通科技有限公司 | Axle box vibration detecting system |
-
2012
- 2012-01-10 CN CN2012200076755U patent/CN202455274U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207810A (en) * | 2018-02-28 | 2019-09-06 | 常州路航轨道交通科技有限公司 | Axle box vibration detecting system |
| CN110207810B (en) * | 2018-02-28 | 2021-11-30 | 常州路航轨道交通科技有限公司 | Axle box vibration detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20140110 |