CN111313396A - Power supply circuit - Google Patents

Power supply circuit Download PDF

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Publication number
CN111313396A
CN111313396A CN202010166727.2A CN202010166727A CN111313396A CN 111313396 A CN111313396 A CN 111313396A CN 202010166727 A CN202010166727 A CN 202010166727A CN 111313396 A CN111313396 A CN 111313396A
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CN
China
Prior art keywords
power
circuit
power supply
real
electrically connected
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.)
Pending
Application number
CN202010166727.2A
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Chinese (zh)
Inventor
尧小军
石华武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Jiaxun Feihong Electrical Co Ltd
Original Assignee
Beijing Jiaxun Feihong Electrical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Jiaxun Feihong Electrical Co Ltd filed Critical Beijing Jiaxun Feihong Electrical Co Ltd
Priority to CN202010166727.2A priority Critical patent/CN111313396A/en
Publication of CN111313396A publication Critical patent/CN111313396A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/34—Snubber circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The embodiment of the invention discloses a power supply circuit, which comprises a control circuit, a communication circuit, a plurality of power modules and a power output port, wherein the control circuit is electrically connected with the control end of each power module; the control circuit can obtain the real-time power consumption of a plurality of external terminals and control the opening and closing of a plurality of power modules so that the voltage output by the plurality of power modules is matched with the real-time power consumption. According to the invention, the on-off of the power modules is controlled according to the real-time power consumption of the external terminals, so that the voltage output by the power modules is matched with the real-time power consumption, the direct current power supply at a longer distance can be realized under the condition of not adding a boosting device, and the power supply requirements under different service application scenes are met.

Description

Power supply circuit
Technical Field
The invention relates to the field of power supply, in particular to a power supply circuit.
Background
In the use environment or the situation that the terrain is complex and the normal power supply is not available, the realization of the long-distance direct current power supply of the communication equipment is always a great problem. At present, due to load consumption and cable loss, the power supply distance of the long-distance direct current power supply equipment is often difficult to reach 10KM, and even if the long-distance power supply can be reached, a boosting device is usually required to be added at an intermediate position.
Disclosure of Invention
In view of the above technical problem, an embodiment of the present invention provides a power supply circuit.
The embodiment of the invention provides a power supply circuit, which comprises a control circuit, a communication circuit, a plurality of power modules and a power output port, wherein the control circuit is electrically connected with a control end of each power module, an output end of each power module is electrically connected with an input end of the power output port, an output end of each power output port is connected with a plurality of external terminals through power supply cables, and the control circuit is communicated with the external terminals through the communication circuit;
the control circuit can acquire the real-time power consumption of the external terminals and control the on and off of the power modules, so that the voltage output by the power modules is matched with the real-time power consumption.
Optionally, the real-time power consumption is determined according to the input voltage of the external terminal, the current service type of the external terminal, and the number of external terminals powered by the power supply circuit.
Optionally, the control circuit obtains real-time power consumption of the plurality of external terminals in an inquiry manner; alternatively, the first and second electrodes may be,
and the external terminal actively reports the real-time power consumption to the control circuit.
Optionally, the power supply circuit further includes a slow start circuit, one end of the slow start circuit is electrically connected to the output end of at least one power module, and the other end of the slow start circuit is electrically connected to the input end of the power output port, and is configured to delay the power-on start time of the power output port.
Optionally, the power supply circuit further includes a protection circuit, and the output terminal of the power supply module is electrically connected to the input terminal of the power output port through the protection circuit.
Optionally, the protection circuit includes a TVS tube, a PTC, a pressure sensitive and an air discharge tube.
Optionally, the output end of the power supply module is electrically connected to the protection circuit through a rectification circuit.
Optionally, the output terminal of the control circuit power supply module is electrically connected to the input terminal of a power supply output port through a photoelectric isolation circuit.
Optionally, a plurality of the external terminals are electrically connected to the output end of the power output port via the same power supply cable.
In the technical scheme provided by the embodiment of the invention, the on-off of the power supply modules is controlled according to the real-time power consumption of the external terminals, so that the voltage output by the power supply modules is matched with the real-time power consumption, the direct current power supply at a longer distance can be realized under the condition of not adding a boosting device, the power supply requirements under different service application scenes are met, the power supply circuit is safe and reliable, the design cost is low, the expansibility is strong, the power supply distance is long, and the load capacity can be effectively controlled and improved.
Drawings
Fig. 1 is a schematic structural diagram of a power supply circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply circuit according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power supply circuit according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power supply circuit according to another embodiment of the present invention.
Reference numerals:
1: a control circuit; 2: a communication circuit; 3: a power supply module; 4: a power output port; 5: a power supply cable; 6: a slow start circuit; 7: a protection circuit; 8: the rectifier circuit 9: a photo-isolation circuit.
Detailed Description
Aiming at the problems that the direct current power supply distance of communication equipment in the current use environment or complicated application occasions is short and boosting equipment needs to be added for realizing remote power supply, the power supply circuit controls the on-off of a plurality of power supply modules according to the real-time power consumption of a plurality of external terminals so as to enable the voltage output by the plurality of power supply modules to be matched with the real-time power consumption, can realize the direct current power supply at a longer distance under the condition of not adding the boosting equipment and meet the power supply requirements under different service application scenes.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the following embodiments may be combined without conflict.
Referring to fig. 1, the power supply circuit according to the embodiment of the present invention includes a control circuit 1, a communication circuit 2, a plurality of power modules 3, and a power output port 4, where the control circuit 1 is electrically connected to a control terminal of each power module 3, an output terminal of each power module 3 is electrically connected to an input terminal of the power output port 4, and an output terminal of the power output port 4 is connected to a plurality of external terminals through a power supply cable 5. The control circuit 1 communicates with external terminals via the communication circuit 2, and optionally one of the external terminals communicates with the control circuit 1 via the communication circuit 2 and with other terminals. The control circuit 1 of this embodiment can acquire the real-time power consumption of a plurality of external terminals, controls the opening and closing of a plurality of power modules 3 to make the voltage and the real-time power consumption phase-match of a plurality of power modules 3 output. The real-time power supply circuit can realize longer-distance direct current power supply under the condition of not adding a booster device, meets the power supply requirements under different service application scenes, is safe and reliable, has low design cost, strong expansibility and long power supply distance, and can effectively control and improve the loaded capacity.
The power supply circuit of the embodiment can realize the connection of at least 26 external terminals under the condition that the output DC192V and the external terminal load power are 3.5W, and can ensure the power supply distance of at least 13KM, thereby greatly solving the requirements of more communication equipment and long power supply distance in some special occasions.
The power supply circuit of the embodiment can also monitor the voltage conditions of all the external terminals connected in real time, and can automatically control the on and off of the plurality of power modules 3 according to the voltage of the external terminals and/or the number of the external terminals supplied with power by the power supply circuit and/or the current service type of the external terminals, so as to adjust the voltage output by the power output port 4, and match the voltage output by the power output port 4 with the power consumption of the plurality of external terminals.
Optionally, in some embodiments, the real-time power consumption is determined according to the input voltage of the external terminal, the current service type of the external terminal, and the number of external terminals powered by the power supply circuit.
For example, when the number of external terminals supplied with power by the power supply circuit increases, the real-time power consumption increases, and the number of power modules 3 in the on state also increases; accordingly, when the number of external terminals supplied with power by the power supply circuit is reduced, the real-time power consumption is also reduced, and the number of power supply modules 3 in the on state is also reduced. When the current service type of the external terminal is a conference, a group call and the like, so that the real-time power consumption of the external terminal is increased, the number of the power modules 3 in the on state is increased; accordingly, when the current service type of the external terminal decreases the real-time power consumption of the external terminal, the number of the power modules 3 in the on state is also decreased.
When the real-time power consumption of the external terminal is increased, the control circuit 1 can automatically control the increase of the number of the started power supply modules 3, and the output voltage of the power supply output port 4 is increased, so that the power supply requirements of all external terminals for normal communication are met; when the real-time power consumption of the external terminal is reduced, the control circuit 1 can automatically control the number of the started power supply modules 3 to be reduced, and the output voltage of the power supply output port 4 is reduced, so that the minimum communication requirement of all the external terminals is ensured.
The control circuit 1 may obtain the real-time power consumption of the external terminals in different manners, for example, in some embodiments, the control circuit 1 obtains the real-time power consumption of the external terminals by querying. In other embodiments, the external terminal actively reports its real-time power consumption to the control circuit 1.
Further, in some embodiments, referring to fig. 2, the power supply circuit may further include a slow start circuit 6, one end of the slow start circuit 6 is electrically connected to the output end of at least one power module 3, and the other end of the slow start circuit is electrically connected to the input end of the power output port 4, where the slow start circuit 6 of this embodiment is configured to delay the power-on start time of the power output port 4, so as to effectively avoid that the power output port 4 is powered on by the power module 3 and overshoots instantly to damage the device. Wherein, the slow start circuit 6 can select the existing slow start circuit.
In some embodiments, please refer to fig. 3, the power supply circuit further includes a protection circuit 7, and the output terminal of the power module 3 is electrically connected to the input terminal of the power output port 4 through the protection circuit 7. Alternatively, the protection circuit 7 includes a TVS (transient voltage super, transient diode), a PTC (Positive Temperature coefficient thermistor), a pressure sensitive, and an air discharge tube. The protection circuit 7 can adapt to the design of complex power supply occasions, and improves the anti-interference and lightning protection capabilities of power output; meanwhile, the protection circuit 7 can guarantee the safety and reliability of the operation of the power supply circuit and prolong the service life of the power supply circuit. Further, referring to fig. 3 again, the output terminal of the power module 3 is electrically connected to the protection circuit 7 through the rectifying circuit 8. Alternatively, the rectifying circuit 8 includes a rectifying tube; the rectifier circuit 8 may be an existing rectifier circuit.
In some embodiments, referring to fig. 4, the output terminal of the power module 3 of the control circuit 1 is electrically connected to the input terminal of the power output port 4 through a photoelectric isolation circuit 9, so as to effectively protect the stability and reliability of the control circuit 1. The optoelectronic isolation circuit 9 may be an existing optoelectronic isolation circuit.
The control circuit 1 of this embodiment includes a CPU control chip, and the CPU control chip can acquire the real-time power consumption of a plurality of external terminals, controls opening and closing of a plurality of power modules 3 to make the voltage of a plurality of power modules 3 output and real-time power consumption phase-match. Further, the control circuit 1 and the communication circuit 2 realize communication through a communication interface and a communication cable.
One of the external terminals communicates with the communication circuit 2 through a communication cable, and the external terminals connected to the communication circuit 2 communicate with other terminals, respectively, or alternatively, the external terminals communicate with each other in sequence, wherein one of the external terminals communicates with the communication circuit 2. For example, an external terminal a, an external terminal B, an external terminal C, an external terminal D, and an external terminal E, the external terminal a communicating with the external terminal B, the external terminal B communicating with the external terminal C, the external terminal C communicating with the external terminal D, the external terminal D communicating with the external terminal E, the external terminal a communicating with the communication circuit 2. The control circuit 1 obtains the real-time power consumption of each terminal through the inquiry of the communication circuit 2 or the active report of the terminal.
In this embodiment, a plurality of external terminals are electrically connected to the output end of the power output port 4 via the same power supply cable; of course, a plurality of external terminals may be electrically connected to the output end of the power output port 4 through different power supply cables.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. A power supply circuit is characterized by comprising a control circuit, a communication circuit, a plurality of power modules and a power output port, wherein the control circuit is electrically connected with a control end of each power module, an output end of each power module is electrically connected with an input end of the power output port, an output end of each power output port is connected with a plurality of external terminals through power supply cables, and the control circuit is communicated with the external terminals through the communication circuit;
the control circuit can acquire the real-time power consumption of the external terminals and control the on and off of the power modules, so that the voltage output by the power modules is matched with the real-time power consumption.
2. The power supply circuit according to claim 1, wherein the real-time power consumption is determined according to an input voltage of an external terminal, a current service type of the external terminal, and the number of external terminals powered by the power supply circuit.
3. The power supply circuit according to claim 1 or 2, wherein the control circuit acquires real-time power consumption of the plurality of external terminals by means of inquiry; alternatively, the first and second electrodes may be,
and the external terminal actively reports the real-time power consumption to the control circuit.
4. The power supply circuit according to claim 1, further comprising a slow start circuit, wherein one end of the slow start circuit is electrically connected to an output terminal of at least one power module, and the other end of the slow start circuit is electrically connected to an input terminal of the power output port, for delaying the power-on start time of the power output port.
5. The power supply circuit of claim 1, further comprising a protection circuit, wherein the output of the power module is electrically connected to the input of the power output port via the protection circuit.
6. The power supply circuit of claim 5, wherein the protection circuit comprises TVS tube, PTC, pressure sensitive and air discharge tube.
7. The power supply circuit according to claim 5, wherein the output terminal of the power supply module is electrically connected to the protection circuit via a rectifying circuit.
8. The power supply circuit of claim 1 wherein the output of the control circuit power module is electrically connected to the input of a power output port via an opto-electronic isolation circuit.
9. The power supply circuit according to claim 1, wherein a plurality of the external terminals are electrically connected to the output terminal of the power output port via the same power supply cable.
CN202010166727.2A 2020-03-10 2020-03-10 Power supply circuit Pending CN111313396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010166727.2A CN111313396A (en) 2020-03-10 2020-03-10 Power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010166727.2A CN111313396A (en) 2020-03-10 2020-03-10 Power supply circuit

Publications (1)

Publication Number Publication Date
CN111313396A true CN111313396A (en) 2020-06-19

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ID=71160760

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010166727.2A Pending CN111313396A (en) 2020-03-10 2020-03-10 Power supply circuit

Country Status (1)

Country Link
CN (1) CN111313396A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102687094A (en) * 2011-12-31 2012-09-19 华为技术有限公司 Processing method and appliance for multi-power supply
WO2014059236A1 (en) * 2012-10-11 2014-04-17 Windstrip Llc Multiple input single output hybrid power system
CN104659858A (en) * 2013-11-22 2015-05-27 通用电气公司 Distribution power supply system and method
CN208386407U (en) * 2018-05-16 2019-01-15 济南保特电子设备有限公司 A kind of multiple-channel output adaptive power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102687094A (en) * 2011-12-31 2012-09-19 华为技术有限公司 Processing method and appliance for multi-power supply
WO2014059236A1 (en) * 2012-10-11 2014-04-17 Windstrip Llc Multiple input single output hybrid power system
CN104659858A (en) * 2013-11-22 2015-05-27 通用电气公司 Distribution power supply system and method
CN208386407U (en) * 2018-05-16 2019-01-15 济南保特电子设备有限公司 A kind of multiple-channel output adaptive power supply

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Application publication date: 20200619

RJ01 Rejection of invention patent application after publication