CN201893556U - Filter control unit of communication direct-current (DC) power supply system - Google Patents
Filter control unit of communication direct-current (DC) power supply system Download PDFInfo
- Publication number
- CN201893556U CN201893556U CN2011201010873U CN201120101087U CN201893556U CN 201893556 U CN201893556 U CN 201893556U CN 2011201010873 U CN2011201010873 U CN 2011201010873U CN 201120101087 U CN201120101087 U CN 201120101087U CN 201893556 U CN201893556 U CN 201893556U
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- voltage
- single chip
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model provides a filter control unit of a communication direct-current (DC) power supply system, which comprises an auxiliary power supply circuit, a filter capacitance and an electronic switch, wherein the input ends of the filter capacitance and the auxiliary power supply circuit are connected to a 0V voltage end, the output end of the auxiliary power supply circuit is connected with the input end of a single chip control circuit, the output end of the single chip control circuit is connected with the input end of a charging control circuit, the output end of the charging control circuit is connected with the input end of the filter capacitance, a discharging control circuit is arranged between the output end of the filter capacitance and the output end of the single chip control circuit; the filter capacitance is also connected with the electronic switch, and the electronic switch is connected to a minus 48V voltage end through an input anti-reverse protection circuit; and the output end of the single chip control circuit is also connected with the electronic switch respectively through an input over-voltage under-voltage protecting circuit and an input-port short-circuit protection circuit. Due to the adoption of the filter control unit, the ripple current of a power supply DC bus-bar can be reduced.
Description
Technical field
The utility model relates to a kind of filtering control unit of communication DC electric power system.
Background technology
Most at present power supply system for communicationss adopts interchange to change direct current or DC-DC obtains a DC bus-bar voltage, the direct supply communication server and communication equipment that DC bus-bar voltage has, powerful system then needs to add some power distributing unit again and links to each other with communication equipment.Be to adopt power line to be connected between dc power supply and the power distributing unit, and the power line that this section is connected is to have certain inductance of length equivalence, communication equipment is in operate as normal, electric current is to present a dynamic current, and frequency also changes, and the electric current that this inductance can be followed variation produces vibration, makes the input DC bus-bar voltage shakiness of power distributing unit, cause the communication device works of back undesired, thereby influence the operate as normal of whole system.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of filtering control unit of communication DC electric power system is provided, and reduces the ripple current of dc power supply bus.
The purpose of this utility model is achieved through the following technical solutions:
The filtering control unit of communication DC electric power system, it is characterized in that: comprise auxiliary power circuit, filter capacitor and electronic switch, the input of described filter capacitor and auxiliary power circuit is connected to the 0V voltage end, the output of described auxiliary power circuit links to each other with the input of single chip machine controlling circuit, the output of single chip machine controlling circuit links to each other with the input of charging control circuit, the output of charging control circuit links to each other with the input of filter capacitor, is connected with charge/discharge control circuit between the output of described filter capacitor and the output of single chip machine controlling circuit; Described filter capacitor also links to each other with electronic switch, and electronic switch is connected to-the 48V voltage end by input counnter attack protective circuit; The output of single chip machine controlling circuit also links to each other with electronic switch with the input port short-circuit protection circuit by the input over under-voltage protection circuit respectively.
The substantive distinguishing features of technical solutions of the utility model and progressive being mainly reflected in:
The utility model can realize reducing the ripple current of dc power supply bus, when the circuit operate as normal, has charging control circuit in the circuit, and wherein filter capacitor can improve busbar voltage stability, ensures communication base station and electric power equipment operate as normal effectively.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: block architecture diagram of the present utility model.
The implication of each Reference numeral among the figure: 1-auxiliary power circuit; The 2-single chip machine controlling circuit; The 3-charging control circuit; The 4-filter capacitor; The 5-electronic switch; The 6-charge/discharge control circuit; 7-input counnter attack protective circuit; 8-imports over under-voltage protection circuit; 9-input port short-circuit protection circuit.
Embodiment
The filtering control unit of communication DC electric power system, as shown in Figure 1, comprise auxiliary power circuit 1, filter capacitor 4 and electronic switch 5, the input of filter capacitor 4 and auxiliary power circuit 1 is connected to the 0V voltage end, the output of auxiliary power circuit 1 links to each other with the input of single chip machine controlling circuit 2, the output of single chip machine controlling circuit 2 links to each other with the input of charging control circuit 3, the output of charging control circuit 3 links to each other with the input of filter capacitor 4, is connected with charge/discharge control circuit 6 between the output of the output of filter capacitor 4 and single chip machine controlling circuit 2; Filter capacitor 4 also links to each other with electronic switch 5, and electronic switch 5 is connected to-the 48V voltage end by input counnter attack protective circuit 7; The output of single chip machine controlling circuit 2 also links to each other with electronic switch 5 with input port short-circuit protection circuit 9 by input over under-voltage protection circuit 8 respectively.
During concrete the application, when the voltage on the input rises to the voltage that can start auxiliary power circuit 1, auxiliary power circuit 1 is started working, auxiliary power circuit 1 adopts linear voltage-stabilizing circuit to realize, auxiliary power circuit 1 connects metal-oxide-semiconductor, auxiliary power circuit 1 directly obtains 12V, 5V and the 2.5V of needs from the last step-down of input 48V by metal-oxide-semiconductor, 12V is used for opening metal-oxide-semiconductor and gives charging control circuit 3 power supplies, 5V supplies with single chip machine controlling circuit 2, and 2.5V is the reference voltage of supplying with in the input port short-circuit protection circuit 9; Single chip machine controlling circuit 2 gets electric controlled, when input voltage during in the normal working voltage scope, single chip machine controlling circuit 2 will be controlled charging control circuit 3 and start working, charging control circuit 3 is by shunt resistance of string on the metal-oxide-semiconductor, limit the gate voltage of metal-oxide-semiconductor by the voltage that detects shunt resistance, make metal-oxide-semiconductor can realize current limliting, then filter capacitor 4 is charged, when the voltage of filter capacitor 4 rises near input voltage, but the voltage on the filter capacitor 4 is during also less than input terminal voltage 1 ~ 2V, single chip machine controlling circuit 2 control electronic switches 5 are opened, this moment, filter capacitor 4 was connected in parallel on the input port fully, the voltage of filter capacitor 4 equates with the voltage of input is approaching, when load is 0～45A/100Hz/210mA/us square wave, filter capacitor 4 work are charged repeatedly and are discharged, and the output ripple electric current of power supply will diminish.
Wherein, charge/discharge control circuit 6 is that the cement resistor by two 10R/9W in parallel comes to filter capacitor 4 discharges, the electric current that filter capacitor 4 is emitted is about 10A, cement resistor and metal-oxide-semiconductor are cascaded, discharge by the work of control metal-oxide-semiconductor, when input voltage is turned off, the time that needs setting to postpone more than 5 seconds discharges again, can guarantee that like this resistance can not burnt out in the switching on and shutting down continuously, prevent to import and to guarantee that inside fills the electric energy of filter capacitor 4 and in time released behind the power supply power-fail.
Input over under-voltage protection circuit 8 adopts a difference amplifier to detect input voltage, and voltage signal is delivered to single chip machine controlling circuit 2, controls whole unit work by single chip machine controlling circuit 2.When input voltage is crossed low or disconnect; be that single chip machine controlling circuit 2 detects input port voltage less than input during under-voltage protection point; single chip machine controlling circuit 2 control electronic switches 5 will be disconnected; input port voltage continues to drop to when being lower than certain voltage simultaneously; single chip machine controlling circuit 2 is opened the metal-oxide-semiconductor that is in series with discharge resistance with control lag and is discharged after a period of time; when the voltage on filter capacitor 4 drops to and is lower than certain voltage; charge/discharge control circuit 6 quits work; play a protective role, improve its reliability.
Input port short-circuit protection circuit 9 is to realize this function with filter capacitor string shunt resistance together; when input port is short-circuited state; filter capacitor 4 can be discharged immediately; discharging current can rise rapidly; when reaching the short circuit current protection of setting; voltage on the shunt resistance can surpass the reference voltage of setting; the comparator output level that can overturn immediately removes to turn-off electronic switch 5 and locked; stop filter capacitor 4 back discharges; when the time that short circuit continues surpasses the time of the power down time-delay that single chip machine controlling circuit 2 sets, filter capacitor 4 will be discharged protective circuit by discharge resistance.
Input counnter attack protective circuit 7 is to utilize two back-to-back metal-oxide-semiconductors to realize; when input voltage is connect inverse time at port, the diode of following metal-oxide-semiconductor body has stoped that voltage is counter irritates, and does not have current direction inside; thereby guarantee that all devices can not be damaged, its purpose also is in order to improve reliability.
Above-mentioned protective circuit can better protective circuit be moved work normally; improved reliability of products; and reduce the ripple current of dc power supply bus; when the circuit operate as normal; after in circuit, having charging control circuit; filter capacitor wherein can improve busbar voltage stability, has effectively played guarantee communication base station and electric power equipment operate as normal.
It is emphasized that: above only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (1)
1. the filtering control unit of communication DC electric power system, it is characterized in that: comprise auxiliary power circuit, filter capacitor and electronic switch, the input of described filter capacitor and auxiliary power circuit is connected to the 0V voltage end, the output of described auxiliary power circuit links to each other with the input of single chip machine controlling circuit, the output of single chip machine controlling circuit links to each other with the input of charging control circuit, the output of charging control circuit links to each other with the input of filter capacitor, is connected with charge/discharge control circuit between the output of described filter capacitor and the output of single chip machine controlling circuit; Described filter capacitor also links to each other with electronic switch, and electronic switch is connected to-the 48V voltage end by input counnter attack protective circuit; The output of single chip machine controlling circuit also links to each other with electronic switch with the input port short-circuit protection circuit by the input over under-voltage protection circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201010873U CN201893556U (en) | 2011-04-08 | 2011-04-08 | Filter control unit of communication direct-current (DC) power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201010873U CN201893556U (en) | 2011-04-08 | 2011-04-08 | Filter control unit of communication direct-current (DC) power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893556U true CN201893556U (en) | 2011-07-06 |
Family
ID=44223025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201010873U Expired - Fee Related CN201893556U (en) | 2011-04-08 | 2011-04-08 | Filter control unit of communication direct-current (DC) power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201893556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315638A (en) * | 2011-04-08 | 2012-01-11 | 安伏（苏州）电子有限公司 | Filtering control unit of communication direct-current power supply system |
-
2011
- 2011-04-08 CN CN2011201010873U patent/CN201893556U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315638A (en) * | 2011-04-08 | 2012-01-11 | 安伏（苏州）电子有限公司 | Filtering control unit of communication direct-current power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102427262B (en) | Elevator braking energy feedback and control system based on super capacitor | |
| CN105514939B (en) | Electric workover rig energy storage super capacitor charge-discharge controller and control method | |
| CN104748288B (en) | Soft start charging circuit and its control method | |
| CN2840439Y (en) | DC power supply load short-circuit self-restoring circuit | |
| CN204144918U (en) | The DC circuit breaker that a kind of high frequency switch power supply system uses | |
| CN207504561U (en) | A kind of high pressure precharge and short-circuit protection circuit based on BUCK circuits | |
| CN104158152B (en) | A kind of motor driver protection circuit and means of defence | |
| CN203434637U (en) | Energy storage system | |
| CN102497009A (en) | Bus soft start circuit of uninterrupted power supply, and method for the same | |
| CN203984377U (en) | One is with soft start and turn-off switching circuit fast | |
| CN201893556U (en) | Filter control unit of communication direct-current (DC) power supply system | |
| CN203368003U (en) | Dual protection device for Boost circuit | |
| CN204333892U (en) | A kind of intrinsically safe circuit improving capacitive load startup ability | |
| CN204012667U (en) | A kind of motor driver protection circuit | |
| CN102315638A (en) | Filtering control unit of communication direct-current power supply system | |
| CN203671834U (en) | Soft start charging circuit | |
| CN203289169U (en) | Pre-charging device of power unit cascaded high-voltage inverter | |
| CN205489578U (en) | Prevent anti - discharge circuit of irritating of battery voltage | |
| CN204118816U (en) | Based on the emergency service circuit of UPS | |
| US20210376648A1 (en) | Output protector for charger | |
| US11303133B2 (en) | Photovoltaic inverter and method for operating a photovoltaic inverter | |
| CN204103608U (en) | A kind of capacitor fast charging circuit | |
| CN211377868U (en) | Dormancy detection circuitry | |
| CN202524284U (en) | Switch power supply capable of outputting high peak power | |
| CN203352268U (en) | Bus capacitor charging/discharging circuit |
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: 20110706 Termination date: 20140408 |