CN112910277A - Power supply and power supply system - Google Patents
Power supply and power supply system Download PDFInfo
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- CN112910277A CN112910277A CN202110265030.5A CN202110265030A CN112910277A CN 112910277 A CN112910277 A CN 112910277A CN 202110265030 A CN202110265030 A CN 202110265030A CN 112910277 A CN112910277 A CN 112910277A
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1252—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1257—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to short circuit or wrong polarity in output circuit
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- 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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a power supply source and a power supply system, which comprises an AC/DC module, a control module, N DC/DC modules and N switch modules, wherein the control module determines the DC/DC module needing to work according to user instructions including the voltage and power requirements of a load, controls the determined DC/DC module to start and the corresponding switch module to be conducted, further, the power supply outputs the voltage and power corresponding to the user instruction to provide the load with the voltage and power of different levels, that is, the power supply in the application can dynamically distribute the voltage and power to the load to meet the power consumption requirement of the load, improve the applicability of the power supply, when the power demand of the load changes, the N DC/DC modules and the N switch modules are controlled correspondingly, the power supply does not need to be replaced, the cost is saved, and the convenience is improved.
Description
Technical Field
The invention relates to the field of power supply, in particular to a power supply and a power supply system.
Background
In order to satisfy various voltage levels required by various loads, in the prior art, there are two power supply methods to output voltages of different levels:
the first power supply method is to transform the supplied ac power through a multi-winding transformer to obtain ac voltages of different levels, and then rectify the ac voltages of different levels to obtain dc voltages of different levels, but the method of transforming voltage using a winding can only obtain voltages corresponding to an entire number of turns, and cannot obtain voltages corresponding to a number of turns other than the entire number of turns, and thus the accuracy of the output voltage of this method is not high.
The second power supply method is to input the supplied AC power to an AC/DC (Alternating Current/Direct Current) module, the AC/DC module converts the AC power into a Direct Current, and then the Direct Current output by the AC/DC module is connected to a plurality of different DC/DC (Direct Current-Direct Current converter) modules to output voltages of different levels.
Disclosure of Invention
The invention aims to provide a power supply source and a power supply system, which can dynamically distribute voltage and power to a load so as to meet the power consumption requirement of the load, improve the applicability of the power supply source, only need to correspondingly control N DC/DC modules and N switch modules when the power consumption requirement of the load is changed, do not need to replace the power supply, save the cost and improve the convenience.
In order to solve the above technical problem, the present invention provides a power supply, including:
the AC/DC module is connected with the AC power supply and is used for converting the AC output by the AC power supply into DC;
the control module is used for determining the DC/DC module needing to work according to a user instruction comprising the voltage and power requirements of the load, sending a control instruction to the determined DC/DC module so as to start the corresponding DC/DC module, and sending a conduction instruction to the switch module corresponding to the determined DC/DC module;
the input ends of the N DC/DC modules are respectively connected with the output ends of the AC/DC modules and are used for starting when a control instruction is received, and transforming the direct current output by the AC/DC modules based on the control instruction to obtain direct current voltage corresponding to the control instruction;
the N switch modules are respectively connected with the output ends of the N DC/DC modules in a one-to-one corresponding manner, and the N switch modules are connected with the N output ends and connected with the load and used for controlling self conduction based on the conduction instruction so as to enable the corresponding DC/DC modules to supply power to the load through the corresponding DC/DC modules;
wherein N is an integer not less than 1.
Preferably, the method further comprises the following steps:
the communication circuit is connected with the control module and is used for providing a communication channel between the control module and the user side;
the control module is specifically configured to receive a user instruction including a voltage and a power requirement of a load, which is sent by a user terminal through the communication circuit, determine a DC/DC module that needs to operate according to the user instruction including the voltage and the power requirement of the load, and send a control instruction to the determined DC/DC module, so that the corresponding DC/DC module is started, and send a conduction instruction to the switch module corresponding to the determined DC/DC module.
Preferably, the AC/DC module includes a first rectification module, a switching circuit, a transformer, and a second rectification module sequentially connected from the input terminal to the output terminal;
the first rectifying module is used for converting power output by the alternating current power supply from alternating current to direct current;
the switching circuit is used for converting the direct-current power supply output by the first rectifying module into high-frequency alternating current;
the transformer is used for isolation;
the second rectifying module is used for converting the high-frequency alternating current output by the transformer into direct current.
Preferably, the AC/DC module further includes an electromagnetic filtering module disposed between the AC power supply and the first rectifying module, for filtering noise in the power supply output by the AC power supply.
Preferably, the AC/DC module further comprises:
the detection module is arranged at the output end of the AC/DC module and is used for detecting the voltage and the current of the output end of the AC/DC module;
and the control circuit is respectively connected with the detection module and the switching circuit and is used for controlling the switching circuit according to the voltage and the current detected by the detection module so as to realize the closed-loop control of the output voltage and the current of the AC/DC module.
Preferably, the AC/DC module further comprises:
the overvoltage protection circuit is respectively connected with the output end of the AC/DC module and the control circuit and is used for detecting whether the output voltage of the AC/DC module is greater than a safety threshold value;
the control circuit is also used for controlling the switching circuit to stop working when the output voltage of the AC/DC is larger than a safety threshold value.
Preferably, the AC/DC module further comprises:
the overload protection circuit is respectively connected with the switching circuit and the control circuit and is used for detecting the current flowing through the switching circuit;
the control circuit is also used for sending an adjusting instruction to the switching circuit to reduce the current of the switching circuit or control the switching circuit to stop working when the current detected by the overload protection circuit is larger than a preset value.
Preferably, the load is M;
each DC/DC module comprises a first output end, a second output end and an Mth output end;
each switch module comprises a first switch, a second switch and an Mth switch;
one end of the ith switch of each switch module is connected with the ith output end of the corresponding DC/DC module, and the other end of the ith switch of each switch module is connected with the other ends of the ith switches of other switch modules and the ith load;
wherein M is an integer of not less than 2, i is an integer of not less than 1, and i is not more than M.
In order to solve the technical problem, the invention also provides a power supply system which comprises the power supply.
The application provides a power supply source and a power supply system, which comprises an AC/DC module, a control module, N DC/DC modules and N switch modules, wherein the control module determines the DC/DC module needing to work according to user instructions including the voltage and power requirements of a load, and controls the determined DC/DC module to start and the corresponding A switch modules to be conducted, further, the power supply outputs the voltage and power corresponding to the user instruction to provide the load with the voltage and power of different levels, that is, the power supply in the application can dynamically distribute the voltage and power to the load to meet the power consumption requirement of the load, improve the applicability of the power supply, when the power demand of the load changes, the N DC/DC modules and the N switch modules are controlled correspondingly, the power supply does not need to be replaced, the cost is saved, and the convenience is improved.
The application also provides a power supply system, which has the same beneficial effects as the power supply described above.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a block diagram of a power supply according to the present invention;
FIG. 2 is a block diagram of another power supply according to the present invention;
FIG. 3 is a block diagram of an AC/DC module according to the present invention.
Detailed Description
The core of the invention is to provide a power supply and a power supply system, which can dynamically distribute voltage and power to a load to meet the power consumption requirement of the load, thereby improving the applicability of the power supply.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
Referring to fig. 1, fig. 1 is a block diagram of a power supply according to the present invention, the power supply includes:
the AC/DC module 1 is connected with an AC power supply and is used for converting the AC output by the AC power supply into DC;
the control module 4 is used for determining the DC/DC module 2 to be operated according to a user instruction comprising the voltage and power requirements of the load, sending a control instruction to the determined DC/DC module 2 to start the corresponding DC/DC module 2, and sending a conduction instruction to the switch module 3 corresponding to the determined DC/DC module 2;
the input ends of the N DC/DC modules 2 are respectively connected with the output end of the AC/DC module 1 and are used for starting when receiving a control instruction, and transforming the direct current output by the AC/DC module 1 based on the control instruction to obtain direct current voltage corresponding to the control instruction;
the N switch modules 3 are respectively connected with the output ends of the N DC/DC modules 2 in a one-to-one corresponding manner, and the N output ends are connected with the load and are used for controlling self conduction based on a conduction instruction so as to enable the corresponding DC/DC modules 2 to supply power to the load by self;
wherein N is an integer not less than 1.
In consideration of the fact that the voltage and power output by the power supply in the prior art cannot be dynamically distributed according to the requirements of the loads, the power supply needs to be reset when the voltages and powers required by various loads are different, so that the cost is increased, and inconvenience is brought to the use of a user.
For solving the technical problem, the design idea of the application is to design a power demand, such as voltage demand and/or power demand, which can be based on the load, and further dynamically adjust the output voltage and/or output power of the power supply, so as to adapt to the power demand of various loads, and improve the applicability and convenience of the power supply.
Based on this, the power supply in this application includes an AC/DC module 1 connected to an AC power supply, which converts the supplied AC power into DC power, and N DC/DC modules 2 are respectively connected to the output terminals of the AC/DC module 1, and N switching modules 3 are respectively connected to the output terminals of the N DC/DC modules 2 one by one, and when the switching modules 3 are in a conducting state, the corresponding DC/DC modules 2 transform the DC power output by the AC/DC module 1 to supply power to a load through the switching modules 3, wherein each DC/DC module 2 and each switching module 3 in this application are controlled by a control module 4, and the control module 4 can control the DC/DC module 2 to output a voltage adapted to the voltage requirement of the load according to the received user instruction (including the power requirement of the load, such as voltage or power) and according to the voltage requirement required by the load, and according to the rated power of each DC/DC module 2 and the power requirement of the load, determining which DC/DC modules 2 are used to supply power to the load through the adaptive switch modules 3, wherein the output voltage of the determined DC/DC modules 2 is the same as the voltage corresponding to the voltage requirement of the load, thereby realizing the dynamic distribution of the output voltage and power of the power supply according to the user requirement of the load and improving the applicability of the power supply.
For example, the rated output power of each of the N DC/DC modules 2 is 50W, and if the voltage requirement of the load is 12V and the power requirement is 50W, one DC/DC module 2 is controlled to start and adjust the output voltage to 12V, and the switch module 3 corresponding to the started DC/DC module 2 is controlled to be in a conducting state. If the voltage demand of the load is 24V and the power demand is 200W, 4 (200/50-4) DC/DC modules 2 are controlled to output 24V, and the switch modules 3 corresponding to the 4 DC/DC modules 2 are controlled to be in a conducting state, so that the 4 DC/DC modules 2 are combined to provide 24V and 200W power for the load. Of course, the rated output powers of the N DC/DC modules 2 may also be different values, such as 10W, 20W, 50W or 100W, and at this time, if the voltage requirement of the load is 12V and the power requirement is 160W, the DC/DC modules 2 with the rated output powers of 10W, 50W and 100W are controlled to output 12V voltage, and the corresponding switch modules 3 are controlled to be turned on, so that the corresponding DC/DC modules 2 are combined to provide 12V and 160W power supplies for the load, so as to meet the requirement of the load. Of course, the specific implementation of the power supply in the present application is not limited to the above examples, and the present application is not particularly limited thereto.
The specific implementation of the DC/DC module 2 and the switch module 3 in the present application is not particularly limited as long as the corresponding functions can be realized. In addition, the user instruction in this application may be a user instruction that an input module on the power supply is operated to input the power demand of the load when the user uses the power supply, and then the control module 4 generates the user instruction including the voltage and power demands based on the power demand, or may be a user instruction that the power supply identifies the demand of the load and then directly generates the user instruction including the voltage and power demands, which is not particularly limited herein.
In conclusion, the power supply in the application can dynamically distribute the voltage and the power for the load according to the voltage and the power requirements of the load, so as to meet the power consumption requirements of the load, improve the applicability of the power supply, and when the power consumption requirements of the load are changed, only the N DC/DC modules 2 and the N switch modules 3 need to be correspondingly controlled, so that the power supply does not need to be replaced, the cost is saved, and the convenience is improved.
On the basis of the above-described embodiment:
as a preferred embodiment, the load is M;
each DC/DC module 2 comprises a first output terminal, a second output terminal up to an mth output terminal;
each switch module 3 comprises a first switch, a second switch and an Mth switch;
one end of the ith switch of each switch module 3 is connected with the ith output end of the corresponding DC/DC module 2, and the other end of the ith switch of each switch module 3 is connected with the other ends of the ith switches of other switch modules 3 and the ith load;
wherein M is an integer of not less than 2, i is an integer of not less than 1, and i is not more than M.
The applicant considers that the adaptability of the power supply is low when the power supply can only supply power for one load at the same time.
In order to further improve the applicability of the power supply, each DC/DC module 2 in the power supply in the present application includes M output terminals, and each switch module 3 includes M switches, and the M switches are connected to the M output terminals in a one-to-one correspondence manner, please refer to fig. 2, and fig. 2 is a structural block diagram of another power supply provided in the present invention.
Specifically, assuming that the rated output power of the N DC/DC modules 2 includes 10W, 20W, 50W or 100W of the DC/DC modules 2, the voltage requirement of the first load is 12V and the power requirement is 50W, the voltage requirement of the second load is 24W and the power requirement is 200W, and the voltage requirement of the third load is 24V and the power requirement is 160W, when the control module 4 receives a user instruction including the power consumption requirement of the above loads, the DC/DC module 2 with the rated output power of 50W is controlled to be turned on, so as to convert the direct current output by the AC/DC module 1 into a direct current power supply of 12V, and the first switch of the corresponding switch module 3 is controlled to be turned on, so as to supply power to the first load; controlling 4 DC/DC modules 2 with rated output power of 50W to be started, or controlling 2 DC/DC modules 2 with rated output power of 50W and one DC/DC module 2 with rated output power of 100W to be started, or controlling two DC/DC modules 2 with rated output power of 100W to be started, so as to convert the direct current output by the AC/DC module 1 into a 24V direct current power supply, and controlling the second switch of the corresponding switch module 3 to be conducted, so as to supply power for a second load; and controlling the DC/DC module 2 with rated output power of 10W, 50W and 100W to be started to convert the direct current output by the AC/DC module 1 into 24V, and controlling the corresponding third switch to be conducted so as to supply power to a third load, and the like.
In conclusion, the power supply in the application can supply power for M loads with different power consumption requirements at the same time, and the applicability of the power supply is further improved.
As a preferred embodiment, the method further comprises the following steps:
the communication circuit is connected with the control module 4 and is used for providing a communication channel between the control module 4 and a user side;
the control module 4 is specifically configured to receive a user instruction including a voltage and a power requirement of a load, which is sent by a user terminal through a communication circuit, determine the DC/DC module 2 that needs to operate according to the user instruction including the voltage and the power requirement of the load, and send a control instruction to the determined DC/DC module 2, so that the corresponding DC/DC module 2 is started, and send a conduction instruction to the switch module 3 corresponding to the determined DC/DC module 2.
The present embodiment is intended to provide a specific manner for the control module 4 to receive the user command, specifically, the user command in the present application is transmitted to the control module 4 from a user terminal through a communication channel provided by the communication circuit, where the user terminal may be, but is not limited to, an input module for inputting the power demand of a load on the power supply, or other upper computer modules for issuing the user command, and the present application is not limited thereto.
In addition, the specific implementation of the communication circuit in the present application is not particularly limited in the present application.
In summary, the control module 4 in the present application receives a user instruction through the communication circuit, and then controls the N DC/DC modules 2 and the N switch modules 3 according to the user instruction.
Referring to fig. 3, fig. 3 is a block diagram of an AC/DC module according to the present invention.
As a preferred embodiment, the AC/DC module 1 includes a first rectification module 12, a switching circuit 13, a transformer 14, and a second rectification module 15 connected in sequence from an input end to an output end;
the first rectifying module 12 is configured to convert power output by the ac power supply from ac to dc;
the switching circuit 13 is configured to convert a dc power supply output by the first rectifying module 12 into a high-frequency ac power;
the transformer 14 is used for isolation;
the second rectifying module 15 is used for converting the high-frequency alternating current output by the transformer 14 into direct current.
Specifically, the present embodiment aims to provide a specific implementation manner of the AC/DC module 1, wherein the AC output from the AC power supply is converted into DC, the DC is converted into AC with high frequency by the switching circuit 13 (the switching circuit 13 including the high frequency switch), the transformer 14 is used to isolate the power supplies on both sides to prevent power interference, and the AC output from the transformer 14 is converted into DC and output to the DC/DC module 2, so that the DC/DC module 2 performs voltage conversion on the DC output from the second rectification module 15.
It should be noted that the user isolation in the present application may not be limited to use of the transformer 14, and other modules may also be used as long as the function of isolating the two power supplies in the present application can be achieved, and the present application is not limited specifically herein.
In summary, the specific implementation manner of the AC/DC module 1 in the present application can realize a function of converting AC output by an AC power source into DC, and the implementation manner is simple and reliable.
As a preferred embodiment, the AC/DC module 1 further includes an electromagnetic filtering module 11 disposed between the AC power supply and the first rectifying module 12, for filtering noise in the power supply output by the AC power supply.
Considering that noise or electromagnetic waves exist in the AC power when the AC power outputted from the AC power source is directly outputted to the AC/DC module 1, there is a possibility that interference may be generated in the process of converting the AC power into the DC power by the AC/DC module 1.
In order to solve the above technical problem, the AC/DC module 1 in the present application is further provided with an electromagnetic filtering module 11 at an output end for filtering out noise in the power supply outputted by the AC power supply, wherein the noise may include, but is not limited to, high frequency waves.
In summary, the electromagnetic filter module 11 in the present application can further ensure the operational reliability of the AC/DC module 1 and the N rear-end DC/DC modules 2.
As a preferred embodiment, the AC/DC module 1 further includes:
the detection module 18 is arranged at the output end of the AC/DC module 1 and is used for detecting the voltage and the current of the output end of the AC/DC module 1;
and the control circuit 17 is connected to the detection module 18 and the switching circuit 13, and is configured to control the switching circuit 13 according to the voltage and the current detected by the detection module 18, so as to implement closed-loop control on the output voltage and the current of the AC/DC module 1.
The AC/DC module 1 in this application further includes a detection module 18 and a control circuit 17, and the control circuit 17 is configured to control the switching circuit 13 so that the operating state of the switching circuit 13 ensures stability of the voltage and the current output by the AC/DC module 1.
Specifically, when the switching circuit 13 includes a plurality of high frequency switches, the control circuit 17 in this application controls the switching circuit 13 by sending a corresponding PWM signal to the switching circuit 13, so as to stabilize the voltage and current output by the AC/DC module 1, thereby ensuring the stability of the operation of the AC/DC module 1.
It should be noted that, in the present application, specific implementations of the control circuit 17 and the detection module 18 are not particularly limited as long as the functions described above can be implemented.
As a preferred embodiment, the AC/DC module 1 further includes:
the overvoltage protection circuit 19 is respectively connected with the output end of the AC/DC module 1 and the control circuit 17 and is used for detecting whether the output voltage of the AC/DC is greater than a safety threshold value;
the control circuit 17 is also used to control the switching circuit 13 to stop working when the output voltage of the AC/DC is greater than a safety threshold.
The applicant also considers that the voltage and current detected by the detection module 18 are used for enabling the control circuit 17 to control the switching circuit 13 to realize the closed-loop control of the voltage and current output by the AC/DC module 1, and the control loop of the closed-loop control is long, and the signal transmission rate is slow, so that when the voltage value of the output voltage is too large, appropriate measures cannot be taken in time to ensure the safety of the AC/DC module 1.
In order to solve the above technical problem, in the present application, an overvoltage protection circuit 19 is further disposed at the output end of the AC/DC module 1, and is configured to detect whether the output voltage of the AC/DC module 1 is greater than a safety threshold, and when the output voltage is greater than the safety threshold, the control circuit 17 controls the switching circuit 13 to stop working, so as to ensure safety of the AC/DC module 1 during working.
It should be noted that the overvoltage protection circuit 19 in the present application may be, but is not limited to, a fuse, and when the output voltage is greater than the safety threshold, the fuse is blown, and the control circuit 17 controls the switching circuit 13 to stop operating when detecting that the fuse is blown.
In addition, as a preferred embodiment, an optical coupler module may be separately disposed between the overvoltage protection circuit 19 and the control circuit 17 and between the detection module 18 and the control circuit 17 in the present application, for isolating the output terminal of the AC/DC module 1 from the control circuit 17, so as to ensure the reliability of the operation of the control circuit 17.
Of course, the specific implementation manner in the present application is not limited to the above examples, and the present application is not limited thereto.
As a preferred embodiment, the AC/DC module 1 further includes:
an overload protection circuit 16 connected to the switching circuit 13 and the control circuit 17, respectively, for detecting a current flowing through the switching circuit 13;
the control circuit 17 is further configured to send an adjustment instruction to the switching circuit 13 to reduce the current of the switching circuit 13 or control the switching circuit 13 to stop operating when the current detected by the overload protection circuit 16 is greater than a preset value.
In order to further improve the reliability of the operation of the AC/DC module 1, the present application further provides an overload protection circuit 16 at the output terminal of the switching circuit 13, which detects the operating current on the primary side of the transformer 14 or in the switching circuit 13, that is, the current flowing through the switching circuit 13. Wherein the current is in positive correlation with the load, and when the current is too large, the switching circuit 13 is controlled to reduce the operating current thereof or the switching circuit 13 is stopped to ensure the reliability of the AC/DC module 1.
A power supply system comprises the power supply.
For solving the above technical problem, the present application further provides a power supply system, and for the introduction of the power supply system, please refer to the above embodiments, which is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A power supply, comprising:
the alternating current/direct current AC/DC module is connected with the alternating current power supply and is used for converting alternating current output by the alternating current power supply into direct current;
the first output end of the control module is respectively connected with the output ends of the N direct current/direct current DC/DC modules, the second output end of the control module is respectively connected with one end of the N switch modules, and the control module is used for determining the DC/DC module needing to work according to a user instruction comprising the voltage and power requirements of the load, sending a control instruction to the determined DC/DC module so as to start the corresponding DC/DC module and sending a conduction instruction to the switch module corresponding to the determined DC/DC module;
the input ends of the N DC/DC modules are respectively connected with the output ends of the AC/DC modules and are used for starting when a control instruction is received, and transforming the direct current output by the AC/DC modules based on the control instruction to obtain direct current voltage corresponding to the control instruction;
the N switch modules are respectively connected with the output ends of the N DC/DC modules in a one-to-one corresponding manner, and the N switch modules are connected with the N output ends and connected with the load and used for controlling self conduction based on the conduction instruction so as to enable the corresponding DC/DC modules to supply power to the load through the corresponding DC/DC modules;
wherein N is an integer not less than 1.
2. The power supply of claim 1, further comprising:
the communication circuit is connected with the control module and is used for providing a communication channel between the control module and the user side;
the control module is specifically configured to receive a user instruction including a voltage and a power requirement of a load, which is sent by a user terminal through the communication circuit, determine a DC/DC module that needs to operate according to the user instruction including the voltage and the power requirement of the load, and send a control instruction to the determined DC/DC module, so that the corresponding DC/DC module is started, and send a conduction instruction to the switch module corresponding to the determined DC/DC module.
3. The power supply according to claim 1, wherein the AC/DC module includes a first rectifying module, a switching circuit, a transformer, and a second rectifying module connected in sequence from the input terminal to the output terminal;
the first rectifying module is used for converting power output by the alternating current power supply from alternating current to direct current;
the switching circuit is used for converting the direct-current power supply output by the first rectifying module into high-frequency alternating current;
the transformer is used for isolation;
the second rectifying module is used for converting the high-frequency alternating current output by the transformer into direct current.
4. The power supply of claim 3 wherein the AC/DC module further comprises an electromagnetic filtering module disposed between the AC power source and the first rectifying module for filtering noise in the power output from the AC power source.
5. The power supply of claim 3 wherein the AC/DC module further comprises:
the detection module is arranged at the output end of the AC/DC module and is used for detecting the voltage and the current of the output end of the AC/DC module;
and the control circuit is respectively connected with the detection module and the switching circuit and is used for controlling the switching circuit according to the voltage and the current detected by the detection module so as to realize the closed-loop control of the output voltage and the current of the AC/DC module.
6. The power supply of claim 5 wherein the AC/DC module further comprises:
the overvoltage protection circuit is respectively connected with the output end of the AC/DC module and the control circuit and is used for detecting whether the output voltage of the AC/DC module is greater than a safety threshold value;
the control circuit is also used for controlling the switching circuit to stop working when the output voltage of the AC/DC is larger than a safety threshold value.
7. The power supply of claim 6 wherein the AC/DC module further comprises:
the overload protection circuit is respectively connected with the switching circuit and the control circuit and is used for detecting the current flowing through the switching circuit;
the control circuit is also used for sending an adjusting instruction to the switching circuit to reduce the current of the switching circuit or control the switching circuit to stop working when the current detected by the overload protection circuit is larger than a preset value.
8. The power supply of any one of claims 1-7, wherein the number of loads is M;
each DC/DC module comprises a first output end, a second output end and an Mth output end;
each switch module comprises a first switch, a second switch and an Mth switch;
one end of the ith switch of each switch module is connected with the ith output end of the corresponding DC/DC module, and the other end of the ith switch of each switch module is connected with the other ends of the ith switches of other switch modules and the ith load;
wherein M is an integer of not less than 2, i is an integer of not less than 1, and i is not more than M.
9. An electric power supply system, characterized by comprising an electric power supply source according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265030.5A CN112910277A (en) | 2021-03-11 | 2021-03-11 | Power supply and power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265030.5A CN112910277A (en) | 2021-03-11 | 2021-03-11 | Power supply and power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112910277A true CN112910277A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110265030.5A Withdrawn CN112910277A (en) | 2021-03-11 | 2021-03-11 | Power supply and power supply system |
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| Country | Link |
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| CN (1) | CN112910277A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300363A (en) * | 2021-07-26 | 2021-08-24 | 湖南一二三智能科技有限公司 | Safe power utilization device |
| CN114384959A (en) * | 2022-01-13 | 2022-04-22 | 北京全路通信信号研究设计院集团有限公司 | Voltage output driving circuit and device |
-
2021
- 2021-03-11 CN CN202110265030.5A patent/CN112910277A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300363A (en) * | 2021-07-26 | 2021-08-24 | 湖南一二三智能科技有限公司 | Safe power utilization device |
| CN114384959A (en) * | 2022-01-13 | 2022-04-22 | 北京全路通信信号研究设计院集团有限公司 | Voltage output driving circuit and device |
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Application publication date: 20210604 |