CN202524151U - Supplementary power supply of remote base station power supply system - Google Patents
Supplementary power supply of remote base station power supply system Download PDFInfo
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- CN202524151U CN202524151U CN2012200705102U CN201220070510U CN202524151U CN 202524151 U CN202524151 U CN 202524151U CN 2012200705102 U CN2012200705102 U CN 2012200705102U CN 201220070510 U CN201220070510 U CN 201220070510U CN 202524151 U CN202524151 U CN 202524151U
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- storage battery
- voltage
- power supply
- base station
- relay
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Abstract
The utility model discloses a supplementary power supply of a remote base station power supply system. The supplementary power supply is additionally arranged between a step-down transformer of the remote base station power supply system and a remote unit connected with the step-down transformer. The supplementary power supply comprises a storage battery used to provide power for the remote unit. Capacitors, which are used to carry out voltage stabilization on an output voltage of the storage battery, are connected in parallel on two ends of the storage battery. A feeder protection module is connected between the storage battery and the remote unit, wherein the storage battery provides the power for the feeder protection module. When the output voltage of the storage battery is lower than the voltage needed by the remote unit, the feeder protection module breaks the connections with the storage battery and the remote unit. After there is a power failure in a near-end base station, with decrease of a direct voltage of the storage battery, supply voltage generated through entering into an output terminal of the step-down transformer from a booster end in the remote base station is not stable and a flash off phenomenon occurs in the remote unit of the remote base station. By using the supplementary power supply of the utility model, the above problems are eliminated. The supplementary power supply of the utility model is suitable for a remote power supply system.
Description
Technical field
The utility model belongs to the power supply field, relates to a kind of base station with replenishing power supply, relates in particular to a kind of additional power supply of remote base station electric power system.
Background technology
The electric power system of remote base station has realized the power supply to far-end unit; This electric power system mainly comprises power supply, stepup transformer, the long-distance transmission line that is positioned at the near-end base station; Be positioned at the reducing transformer of telepoint base station; The power supply of near-end boosts and passes to the reducing transformer of far-end through long-distance transmission line through stepup transformer, after through reducing transformer the voltage of its input being carried out step-down and handles, flows to far-end unit.Yet after the near-end base station had a power failure, along with the decline of power supply direct voltage, the voltage that enters into the reducing transformer output from stepup transformer produced wild effect, made far-end unit occur dodging and broke, and had a strong impact on client's satisfaction.The traditional solution is that the input at stepup transformer adds storage battery and high-tension electricity replenished realizing; High-pressure side at reducing transformer installs electric capacity additional to play filter action, makes it when discharge, reach the standard smooth direct current as far as possible.These means can be eliminated in actual application than minor swing, and when the booster voltage fluctuation was big, because long-distance transmission line is longer, resistance was bigger, and fluctuation signal is exaggerated, and electric capacity can't satisfy the filtering needs.
Summary of the invention
For solving the above-mentioned deficiency that exists in the prior art; The utility model provides a kind of additional power supply of remote base station electric power system; Eliminated remote base station after the near-end base station has a power failure; The decline of pressing along with accumulator DC enters into the disconnected phenomenon of sudden strain of a muscle that supply power voltage far-end unit unstable, telepoint base station that the output of reducing transformer produces occurs from boost terminal.
For realizing above-mentioned purpose; The technical scheme that the utility model is taked is: a kind of additional power supply of remote base station electric power system; Add the reducing transformer that is located at the remote base station electric power system, with far-end unit that reducing transformer is connected between; Comprise the storage battery that is used for to the far-end unit power supply, be parallel with the electric capacity that the output voltage of storage battery is carried out voltage stabilizing at the two ends of storage battery.
Improvement as the utility model; It also comprise be connected between storage battery and the far-end unit by battery-driven feed protection module; When the output voltage of storage battery was lower than the far-end unit required voltage, feed protection module disconnection storage battery was connected with far-end unit.
As qualification, said feed protection module comprises voltage comparator ic, pull-up resistor R1, current-limiting resistance R2 and R3, voltage stabilizing didoe ZD, slide rheostat RL, electrochemical capacitor C2 and C3, triode T and two relay J 1, J2; The grounding pin of voltage comparator ic connects the negative pole of storage battery, and the voltage supply pin connects the voltage output end of storage battery, and reverse input end is connected with the positive pole of electrochemical capacitor C2 and the sliding end of slide rheostat RL; End in the other two ends of slide rheostat RL is connected to the voltage output end of storage battery through current-limiting resistance R2, and an other end is connected to the negative pole of batteries; The negative pole of electrochemical capacitor C2 is connected with the negative pole of storage battery; The input in the same way of voltage comparator ic is connected with the negative pole of the positive pole of electrochemical capacitor C3, voltage stabilizing didoe ZD and the end of current-limiting resistance R3; The other end of current-limiting resistance R3 connects the voltage output end of storage battery; The positive pole of the negative pole of electrochemical capacitor C3 and voltage stabilizing didoe ZD all is connected to the negative pole of storage battery, and the output pin of voltage comparator ic is connected with pull-up resistor R1 with the base stage of triode T; On draw the other end of R1 to connect the voltage output end of storage battery; The coil of the collector electrode of triode T through relay J 1 is connected to storage battery+12V; The common port of relay J 1 is connected to the negative pole of storage battery through the coil of relay J 2, the normally closed switch of the normally-closed contact of relay J I through relay J 2 be connected to storage battery+48V; The normally closed switch of relay J 2 connects the output of reducing transformer.
As further qualification, described storage battery divides storage battery to be composed in series by four groups of 12V/6A, and the input voltage of the coil of the voltage supply pin of described voltage comparator ic, pull-up resistor R1, current-limiting resistance R3, relay J 1 is 12V.
The further feature of the utility model also has: the model of said voltage comparator ic is LM339.
Owing to adopted technique scheme; The technological progress that the utility model is compared with prior art obtained is: utilize large bulk capacitance and small battery to be used; When fluctuation appears in battery tension, thereby electric capacity discharges and recharges the steady of holding circuit voltage accordingly, promotes the power-on time of replenishing power supply; After storage battery began power supply, additional power supply can continue the steady electricity supply more than 20 minutes; When the output voltage of storage battery is lower than the far-end unit required voltage, break off being connected of storage battery and far-end unit through the feed protection module, further improved the stability of storage battery power supply voltage.
The utility model is applicable to remote electric power system.
The utility model below will combine Figure of description and specific embodiment to do further explain.
Description of drawings
Accompanying drawing 1 is the connection block diagram of existing remote base station electric power system;
Fig. 2 is the electrical schematic diagram of the utility model.
Embodiment
Embodiment
Accompanying drawing 1 is depicted as a kind of existing remote base station electric power system, comprises the power supply 19, stepup transformer 20, long-distance transmission line 21, the reducing transformer 22 that is positioned at telepoint base station and the far-end unit 23 that are positioned at the near-end base station.
Present embodiment is a kind of additional power supply of remote base station electric power system, and present embodiment is connected between reducing transformer 22 and the far-end unit 23 in use.
Shown in accompanying drawing 2, present embodiment comprises storage battery 24 that the branch storage battery series connection that utilizes 4 groups of 12V/6A constitutes 48V and replenish power supply, parameter capacitor C 1, the feed protection module 25 for 100V/47000UF.
When storage battery 24 was supplied power to system, capacitor C 1 played the effect of flat ripple, capacitor charging when voltage uprises suddenly, and when voltage reduced, the fluctuation of voltage in the circuit was effectively eliminated in the capacitor discharge.
The grounding pin 12 of voltage comparator ic connects the negative pole of storage battery 24, voltage supply pin 3 connect storage battery 24+12V end, reverse input end 4 is connected with the positive pole of electrochemical capacitor C2 and the sliding end of slide rheostat RL.
One of other two ends of slide rheostat RL through resistance R 2 be connected to storage battery 24+48V end, an other end is connected to the negative pole of storage battery 24; The negative pole of electrochemical capacitor C2 is connected with the negative pole of storage battery 24; The input in the same way 5 of voltage comparator ic is connected with the negative pole of the positive pole of electrochemical capacitor C3, voltage stabilizing didoe ZD and the end of current-limiting resistance R3; The other end of current-limiting resistance R3 connects storage battery 24+12V end; The positive pole of the negative pole of electrochemical capacitor C3, voltage stabilizing didoe ZD all is connected to the negative pole of storage battery 24, and electrochemical capacitor C2 and C3 all play Ping Bo and improve the withstand voltage effect of circuit.
The output pin 2 of voltage comparator ic is connected with base stage, the pull-up resistor R1 of triode T respectively; The other end of pull-up resistor R1 connects storage battery 24+12V end; The coil of the collector electrode of triode T through relay J 1 is connected to storage battery 24+12V end; The common port of relay J 1 is connected to the negative pole of storage battery 24 through the coil of relay J 2, the normally closed switch of the normally-closed contact of relay J I through relay J 2 be connected to storage battery 24+the 48V end; The normally closed switch of relay J 2 connects the output of reducing transformer 22.
In the said elements: the parameter of electrochemical capacitor C2 and C3 is 50V/1UF; The parameter of voltage stabilizing didoe ZD is 5.1V/0.5W, and the parameter of pull-up resistor R1 is 1.2K Ω/0.5W, and the parameter of current-limiting resistance R2 is 10K Ω/0.5W; The parameter of R3 is 1.2K Ω/0.5W; The maximum value of slide rheostat RL is 10K Ω, and the parameter of relay J 1 is 5A/12V, and the parameter of relay J 2 is 20A/48V.
The operation principle of feed protection module 25 is: the energization pins 3 of voltage comparator ic is its 3 pin, and grounding pin 12 is its 12 pin.The input in the same way 5 of voltage comparator ic (being its 5 pin) voltage be earlier by single group storage battery (branch storage battery)+12V power supply after current limliting R3 dividing potential drop, through voltage stabilizing didoe ZD voltage is stabilized in 5.1V again, as reference voltage.The reverse input end 4 of voltage comparator ic (being its 4 pin) voltage, is obtained by the sliding end of slide rheostat RL after resistance R 2 and slide rheostat RL dividing potential drop by storage battery 24+48V voltage again.The output pin 2 of voltage comparator ic is its 2 pin.
When storage battery 24 with+when 48V supplies power to system; Because the input in the same way 5 (being its 5 pin) of voltage comparator ic is reference voltage 5.1V; When the voltage of the reverse input end 4 (being its 4 pin) of voltage comparator ic is higher than 5.1V; The output voltage of the output pin 2 of voltage comparator ic (being its 2 pin), deficiency is so that model is 9013 triode T conducting; When the voltage of storage battery 24 is lower than a certain special value such as 46V; The reverse input end 4 of voltage comparator ic (4 pin) voltage is lower than input 5 (5 pin) input voltage in the same way; 2 pin output HIGH voltages of voltage comparator ic, triode T conducting, relay J 1 adhesive then; Relay J 2 dead electricity, thus break off being connected of storage battery 24 and electric power system.
In sum, present embodiment has played and has made the supply power voltage of storage battery steady, prolongs the effect of power-on time; When the output voltage of storage battery was lower than the far-end unit required voltage, feed protection module 25 disconnection storage batterys were connected with far-end unit.Present embodiment also has small investment, advantage such as easy for installation, safe and reliable.
Claims (4)
1. the additional power supply of a remote base station electric power system; Add between the far-end unit that is located at remote base station electric power system reducing transformer, reducing transformer connection; Comprise the storage battery that is used for to the far-end unit power supply, it is characterized in that: be parallel with the electric capacity that the output voltage of storage battery is carried out voltage stabilizing at the two ends of storage battery.
2. the additional power supply of remote base station electric power system according to claim 1; It is characterized in that: between storage battery and far-end unit, be connected with by battery-driven feed protection module; When the output voltage of storage battery was lower than the far-end unit required voltage, feed protection module disconnection storage battery was connected with far-end unit.
3. the additional power supply of remote base station electric power system according to claim 2 is characterized in that: said feed protection module comprises voltage comparator ic, pull-up resistor R1, current-limiting resistance R2 and R3, voltage stabilizing didoe ZD, slide rheostat RL, electrochemical capacitor C2 and C3, triode T and two relay J 1, J2;
The grounding pin of voltage comparator ic connects the negative pole of storage battery; The voltage supply pin connects the voltage output end of storage battery; Reverse input end is connected with the positive pole of electrochemical capacitor C2 and the sliding end of slide rheostat RL; The other two ends of a slide rheostat RL wherein end are connected to the voltage output end of storage battery through current-limiting resistance R2; An other end is connected to the negative pole of storage battery, and the negative pole of electrochemical capacitor C2 is connected with the negative pole of storage battery, and the input in the same way of voltage comparator ic is connected with the negative pole of the positive pole of electrochemical capacitor C3, voltage stabilizing didoe ZD and the end of current-limiting resistance R3; The other end of current-limiting resistance R3 connects the voltage output end of storage battery; The positive pole of the negative pole of electrochemical capacitor C3 and voltage stabilizing didoe ZD all is connected to the negative pole of storage battery, and the output pin of voltage comparator ic is connected with pull-up resistor R1 with the base stage of triode T, and the other end of pull-up resistor R1 connects the voltage output end of storage battery; The collector electrode of triode T is connected to the voltage output end of storage battery through the coil of relay J 1; The common port of relay J 1 is connected to the negative pole of storage battery through the coil of relay J 2, and the normally-closed contact of relay J I is connected to the voltage output end of storage battery through the normally closed switch of relay J 2.
4. the additional power supply of remote base station electric power system according to claim 3; It is characterized in that: described storage battery is composed in series by the branch storage battery of four groups of 12V/6A, and the input voltage of the coil of the voltage supply pin of described voltage comparator ic, pull-up resistor R1, current-limiting resistance R3, relay J 1 is 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200705102U CN202524151U (en) | 2012-02-29 | 2012-02-29 | Supplementary power supply of remote base station power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200705102U CN202524151U (en) | 2012-02-29 | 2012-02-29 | Supplementary power supply of remote base station power supply system |
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| Publication Number | Publication Date |
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| CN202524151U true CN202524151U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200705102U Expired - Lifetime CN202524151U (en) | 2012-02-29 | 2012-02-29 | Supplementary power supply of remote base station power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079046A (en) * | 2013-03-26 | 2014-10-01 | 深圳市海洋王照明工程有限公司 | Charging circuit of battery |
-
2012
- 2012-02-29 CN CN2012200705102U patent/CN202524151U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079046A (en) * | 2013-03-26 | 2014-10-01 | 深圳市海洋王照明工程有限公司 | Charging circuit of battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WINTAO COMMUNICATIONS CO., LTD. Free format text: FORMER NAME: HEBEI WINTAO TELECOMMUNICATION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 050030 Hebei Province, Shijiazhuang city Yuhua District Donggang Road No. 299 Road, room C1-1-402 Jinlan Patentee after: Yuan Tao communications Limited by Share Ltd Address before: 050030 Hebei Province, Shijiazhuang city Yuhua District Donggang Road No. 299 Road, room C1-1-402 Jinlan Patentee before: Hebei Wintao Telecommunications Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
| CX01 | Expiry of patent term |