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CN113471969A - Power supply system and power supply method of power supply system - Google Patents

Power supply system and power supply method of power supply system Download PDF

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Publication number
CN113471969A
CN113471969A CN202110887520.9A CN202110887520A CN113471969A CN 113471969 A CN113471969 A CN 113471969A CN 202110887520 A CN202110887520 A CN 202110887520A CN 113471969 A CN113471969 A CN 113471969A
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CN
China
Prior art keywords
power supply
power
output interface
sources
controller
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
CN202110887520.9A
Other languages
Chinese (zh)
Inventor
吴文全
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.)
Ng Fujian Industrial Equipment Corp
Original Assignee
Ng Fujian Industrial Equipment Corp
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 Ng Fujian Industrial Equipment Corp filed Critical Ng Fujian Industrial Equipment Corp
Priority to CN202110887520.9A priority Critical patent/CN113471969A/en
Publication of CN113471969A publication Critical patent/CN113471969A/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
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • 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
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • 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
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • 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
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present application relates to the field of power supply, and in particular, to a power supply system and a power supply method of the power supply system, the power supply system includes a power output interface, a power supply unit, a first communicating device and a power supply detector, the power output interface is used for being electrically connected to a power consumption device to be powered, so as to supply power to the power consumption device, the power supply unit includes a plurality of power supply sources, the first communicating device is disposed between the power supply unit and the power output interface, the first communicating device can connect one of the plurality of power supply sources to the power output interface, and the power supply detector detects power supply power of each of the plurality of power supply sources. According to the power supply system and the power supply method of the power supply system, the problem that one power supply source of a plurality of power supply sources cannot be selected for power supply in the existing power supply scheme is solved, and the power supply system and the power supply method of the power supply system can select a proper power supply source from the plurality of power supply sources to supply power to power utilization equipment according to power supply.

Description

Power supply system and power supply method of power supply system
Technical Field
The present disclosure relates to the field of power supply, and in particular, to a power supply system and a power supply method of the power supply system.
Background
As the charging demand of the power equipment increases, in some cases, a plurality of power consumption equipment may need to be charged at the same time, and in the existing power supply system, a plurality of power supplies or a multi-phase power supply is generally adopted to supply power to the plurality of power consumption equipment respectively.
However, in such systems, when the power demand of a new powered device arises, it is not possible to select an appropriate power source of the multiple power sources to charge the powered device according to the current power supply loads of these power sources to ensure load balancing among the multiple power sources.
Disclosure of Invention
The application provides a power supply system and a power supply method of the power supply system, which solve the problem that one power supply source in a plurality of power supply sources cannot be selected according to power supply power to electric equipment to be powered in the existing power supply scheme.
According to a first aspect of the present application, a power supply system is provided, which includes a power output interface, a power supply unit, a first communicating device, and a power supply detector, where the power output interface is used to be electrically connected to a power consumption device to be powered, so as to power the power consumption device, the power supply unit includes a plurality of power supply sources, the first communicating device is disposed between the power supply unit and the power output interface, the first communicating device is capable of connecting one of the plurality of power supply sources to the power output interface, and the power supply detector detects power supply power of each of the plurality of power supply sources.
Optionally, the power supply system further includes a first controller, the first controller is connected between the first connector and the power output interface, and the first controller is connected to a control terminal of the first connector to control the first connector to connect one of the plurality of power supply sources to the power output interface.
Optionally, the power supply system further includes a power distribution module, the power supply detector is communicatively connected to the power distribution module to send the detected power supply power of each power supply source to the power distribution module, the power distribution module compares the magnitudes of the power supply powers of the plurality of power supply sources to determine the power supply source with the smallest power supply power among the plurality of power supply sources, and the power distribution module sends a comparison result indicating the power supply source with the smallest power supply power to the first controller, and the first controller controls the first connector to connect the power supply source with the smallest power supply power to the power output interface.
Optionally, the power supply system further comprises a first current converter disposed between the first communicator and the power output interface to convert alternating current from the power supply source to direct current or direct current from the power supply source to alternating current.
Optionally, the power supply system further includes an electrical energy storage unit connected to the first current converter to receive the electric power converted by the first current converter, and a second communicator provided between the first current converter and the electrical energy storage unit to conduct or break an electrical connection between the first current converter and the electrical energy storage unit.
Optionally, the power supply system further includes a second controller and a memory, the memory stores an electric quantity critical value, the second controller is capable of acquiring the stored electric quantity of the electric energy storage unit and acquiring the electric quantity critical value from the memory, and when the stored electric quantity is smaller than the electric quantity critical value, the second controller controls the second communicator to conduct the electric connection between the first current converter and the electric energy storage unit.
Optionally, the power supply system further comprises a third communicator connected between the first current converter and the electrical energy storage unit and the power output interface to enable connection of one of the first current converter and the electrical energy storage unit to the power output interface.
Optionally, the electrical energy storage unit is electrically connected to one or more of the power distribution module, the first controller, the power output interface, the first connector.
According to a second aspect of the present application, there is provided a power supply method of a power supply system, the power supply system including a power output interface, a power supply unit, a first connector, and a power supply detector, the power output interface being configured to be electrically connected to a power-consuming device to be powered, the power supply unit including a plurality of power supply sources, the first connector being provided between the power supply unit and the power output interface, the power supply method of the power supply system including: acquiring, by the power supply detector, power supply power of each of the plurality of power supply sources; connecting one of the plurality of power supply sources to the power output interface through the first communicator according to the power supply power of the plurality of power supply sources; and supplying power to the electric equipment through the power output interface.
Optionally, the power supply system further includes a first controller and a power distribution module, the first controller is connected between the first connector and the power output interface, the power supply detector is connected in communication with the power distribution module, and one of the plurality of power supply sources is connected to the power output interface through the first connector according to the power supply powers of the plurality of power supply sources, including: comparing the power supply power of the plurality of power supply sources through the power distribution module, and determining the power supply source with the minimum power supply power in the plurality of power supply sources; transmitting, by the power distribution module, a comparison result indicating a power supply source whose power supply power is minimum to the first controller; and controlling the first connector to connect the power supply source with the minimum power supply power to the power output interface through the first controller.
The application provides a power supply system and a power supply method of the power supply system, the power supply system can comprise a first communicating device of a power output interface power supply unit and a power supply detector, wherein the power supply unit comprises a plurality of power supply sources, when power needs to be supplied to electric equipment to be supplied, one power supply source of the plurality of power supply sources can be connected to the power output interface through the first communicating device arranged between the power supply unit and the power output interface, and then the power supply source connected to the power output interface can supply power to the electric equipment to be supplied through the power output interface, so that the problem that when the existing power supply system supplies power to the electric equipment to be supplied, one power supply source cannot be selected from the plurality of power supply sources to supply power to the electric equipment to be supplied according to the requirements of field workers is solved.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 shows a schematic block diagram of one example of a power supply system according to an embodiment of the present application;
fig. 2 shows a schematic block diagram of a first communicator of a power supply system according to an embodiment of the present application;
fig. 3 shows a schematic block diagram of another example of a power supply system according to an embodiment of the present application;
fig. 4 shows a schematic flow diagram of a method of supplying power according to an embodiment of the present application.
Icon: 100-a power supply unit; 101-a power supply source; 200-a first connector; 201-a switch; 300-a power output interface; 400-a supply detector; 500-a first controller; 600-a power distribution module; 700-a first current converter; 800-a third communicator; 900-an electrical energy storage unit; 10-a data transmission module; k1 — first switch; k2 — second switch; k3 — third switch; k4-fourth switch; k5-fifth switch.
Detailed Description
The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art in view of the disclosure of the present application. For example, the order of operations described herein is merely an example, which is not limited to the order set forth herein, but rather, variations may be made in addition to operations which must occur in a particular order, which will be apparent upon understanding the disclosure of the present application. Moreover, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.
The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after understanding the disclosure of the present application.
Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on," "connected to," coupled to, "over," or "overlying" another element, it may be directly "on," "connected to," coupled to, "over," or "overlying" the other element, or one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," directly coupled to, "directly over" or "directly overlying" another element, there may be no intervening elements present.
As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.
Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section referred to in the examples described herein may be termed a second element, component, region, layer or section without departing from the teachings of the examples.
For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be oriented "below" or "lower" relative to the other elements. Thus, the term "above … …" includes both an orientation of "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.
Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.
The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.
According to a first aspect of the present application, there is provided a power supply system, which may include a power output interface, a power supply unit, a first communicator, and a power supply detector, wherein the power supply unit comprises a plurality of power supply sources, when the power consumption equipment to be powered needs to be powered, the power supply detector can detect the power supply power of each power supply source, and one of the plurality of power supply sources may be connected to the power output interface through a first communicator provided between the power supply unit and the power output interface, the power supply source connected to the power output interface can supply power to the electric equipment to be powered through the power output interface, so that the problem that when the existing power supply system supplies power to the electric equipment to be powered, the problem that one power supply source can not be selected from a plurality of power supply sources according to requirements to supply power to the electric equipment to be supplied with power is solved.
Fig. 1 shows a schematic block diagram of one example of a power supply system according to an embodiment of the present application.
As shown in fig. 1, the power supply system according to the embodiment of the present application includes a power output interface 300, a power supply unit 100, a first connector 200, and a power supply detector 400.
The power supply unit 100 may include a plurality of power supply sources 101, in one example, the power supply unit 100 may be a three-phase power supply of a power grid, and the plurality of power supply sources 101 may include three phases of the three-phase power supply, such as a U-phase, a V-phase, and a W-phase of the three-phase power supply; in another example, the power supply unit 100 may be a charging station, and the power supply source 101 may be a plurality of branch power supply sources 101 of the charging station.
The first communicator 200 is provided between the power supply unit 100 and the power output interface 300, and the first communicator 200 is capable of connecting one power supply source 101 of the plurality of power supply sources 101 to the power output interface 300.
Here, the first connector 200 may be a switch for controlling on and off of the circuit. For example, in the embodiment of the present application, as shown in fig. 2, the first connector 200 may include a plurality of switches 201, the plurality of switches 201 are respectively disposed in one-to-one correspondence with the plurality of power supply sources 101, and when power needs to be supplied to a power consumption device to be powered, one of the plurality of switches may be turned on, so that one power supply source 101, corresponding to the turned-on switch, of the plurality of power supply sources 101 is connected to the power output interface 300 to supply power through the power supply source. As an example, a worker in the field may manually operate the switch to be turned on and off according to a requirement, so as to supply power to the electric equipment to be supplied with power through the power supply source 101 disposed corresponding to the current switch.
Specifically, the first connection end of each switch can be connected to the power supply 101 set corresponding thereto or in a zero position, and the second connection end of each switch can be connected to the power output interface 300, for example, when the electrical equipment to be powered needs to be powered, a worker in the field can select one of the power supplies 101 to power the electrical equipment to be powered according to a requirement, where the requirement can be determined according to the magnitude of power of each power supply 101 described below. Specifically, the first connection end of the switch corresponding to the selected power supply source 101 may be connected to the selected power supply source 101, and then the selected power supply source 101 may supply power to the electric device to be powered through the power output interface 300, at this time, the first connection ends of the remaining switches of the first connector 200 may be disconnected from the power supply source 101 corresponding thereto or may be in a zero position.
However, the form of the first connector 200 is not limited to the above embodiment, and it may also be formed as a plurality of switch circuits, which correspond to the plurality of power supply sources 101 one-to-one, for example, the power supply sources 101 and the power output interface 300 may be controlled to be turned on or off, and as an example, a triode may be used in cooperation with a circuit breaker, and the triode electronic switch is used as an auxiliary control circuit switch of the circuit breaker to control the on and off of the circuit breaker, so as to achieve the purpose of switching control. Alternatively, the first connector 200 may also be formed as a single-pole-multiple-throw switch to be able to connect one of a plurality of power supply sources to the power output interface 300.
In addition, the power supply system may further include a power supply detector 400, and the power supply detector 400 detects the power supply of each power supply 101 of the plurality of power supplies 101, for example, the power supply detector 400 may be communicatively connected to each power supply 101 of the plurality of power supplies 101 to receive and detect the power supply of each power supply 101 in real time.
For example, the power supply detector 400 may be communicatively connected to a communication terminal to transmit the detected power supply data to the communication terminal, and a worker in the field may view the power supply of each power supply source 101 detected by the power supply detector 400 through the communication terminal so as to select an appropriate power supply source 101 to supply power to the powered device to be powered.
In the embodiment of the present application, as shown in fig. 3, the power supply unit 100 may be a three-phase power supply, 3 phases of the three-phase power supply may serve as 3 power supply sources 101, and when the electrical device to be powered needs to be powered, one phase of the three-phase power supply may be selected to be connected to the power supply source 101 arranged corresponding to the selected phase. Accordingly, the first communicator may include a first switch K1, a second switch K2, and a third switch K3 corresponding to three of the power sources, respectively.
In the embodiment of the present application, the power output interface 300 is used for electrically connecting with an electrical device to be powered to power the electrical device. Here, the power supply system may be a charging system that charges a vehicle, and the power output interface 300 may be a charging gun, and accordingly, the electric device may be an electric vehicle, a battery car, a vehicle, or the like. However, the power output interface 300 is not limited thereto as long as it can be connected with an electric device to be powered to supply power to the electric device.
In an embodiment of the present application, as shown in fig. 3, the power supply system may further include a first controller 500, the first controller 500 may be connected between the first communicator 200 and the power output interface 300, for example, the first controller 500 may be connected to a control terminal of the first communicator 200 to control the first communicator 200 to connect one power supply source 101 of the plurality of power supply sources 101 to the power output interface 300.
Furthermore, the first controller 500 may be further communicatively connected to the power supply detector 400, so that the first controller 500 may receive the output power of each power supply source 101 transmitted by the power supply detector 400, and the first controller 500 may further compare the output power of each power supply source 101, and specifically, the first controller 500 may include a comparator, so that the magnitude relation of the output power of each power supply source 101 may be compared by the comparator to determine the power supply source with the minimum output power among the plurality of power supply sources 101. Here, in the example of fig. 3, the dotted line represents the communication connection, and the solid line represents the power connection.
Specifically, when the powered device to be powered needs to be powered, the powered device to be powered is connected to the power output interface 300, the power supply detector 400 detects the output power of each power supply source 101 in the plurality of power supply sources 101, and transmits the detected output power to the first controller 500, the first controller 500 receives the output power of each power supply source 101 detected from the power supply detector 400, and compares the output power of each power supply source 101, to determine the power supply source 101 with the smallest power supply among the plurality of power supply sources 101, the first controller 500 will control the first communicator 200 to connect the power supply source 101 with the smallest power supply to the power output interface 300, where, in the embodiment of the present application, the first controller 500 may be disposed at the control end of the first connector 200 to implement automatic management of the power supply system, and a switch does not need to be manually turned on.
In the embodiment of the present application, as shown in fig. 3, the power supply system may further include a power distribution module 600, the power supply detector 400 is communicatively connected to the power distribution module 600 to transmit the detected power supply of each power supply 101 to the power distribution module 600, the power distribution module 600 compares the magnitudes of the power supplies of the plurality of power supplies 101 to determine the power supply 101 with the minimum power supply among the plurality of power supplies 101, and the power distribution module 600 transmits a comparison result indicating the power supply 101 with the minimum power supply to the first controller 500, and the first controller 500 controls the first connector 200 to connect the power supply 101 with the minimum power supply to the power output interface 300.
In an embodiment of the present application, as shown in fig. 3, the power supply system may further include a first current converter 700, the first current converter 700 being disposed between the first connector 200 and the power output interface 300 to convert the alternating current from the power supply 101 into the direct current or convert the direct current from the power supply 101 into the alternating current. Specifically, when the electrical equipment to be powered needs to be powered, the first current converter 700 can convert the ac power from the power supply 101 into dc power, and the electrical equipment to be powered is powered through the power output interface 300. Here, the first current converter 700 may be an AC/DC converter, and the power supply 101 may be a plurality of phases of a power grid, or a plurality of branch power supplies 101 of a charging station. In case the power supply system includes the first controller 500, the first current converter 700 may be connected between the first controller 500 and the power output interface 300.
Further, the power supply system may further include a charger (not shown) that may be integrated with the first current converter 700 such as an AC/DC converter, so that the electric energy storage unit 900 may be charged by the charger.
In the embodiment of the present application, as shown in fig. 3, the power supply system may further include an electrical energy storage unit 900, and the electrical energy storage unit 900 may be connected to the first current converter 700 to receive the power converted by the first current converter 700, for example, when the electrical energy storage unit 900 needs to supply power, the first current converter 700 may convert the alternating current of the power supply 101 into the direct current to supply to the electrical energy storage unit 900.
Further, the power supply system may further include a second communicator (not shown) disposed between the first current converter 700 and the electrical energy storage unit 900 for turning on or off the electrical connection between the first current converter 700 and the electrical energy storage unit 900.
Specifically, the first connection end of the second connector can be connected to the first current converter 700, and the second connection end of the second connector can be connected to the electrical energy storage unit 900, for example, when the electrical energy storage unit 900 needs to be powered, the second connector can conduct the electrical connection between the first current converter 700 and the electrical energy storage unit 900, so that the power supply 101 can charge the electrical energy storage unit 900.
In an example, the second communicator may be manually turned on so that the electrical connection between the first current converter 700 and the electrical energy storage unit 900 is conducted.
In another example, the power supply to the electrical energy storage unit 900 may be automatically managed according to the requirement, for example, the second communicator may be controlled to be turned on or off by the controller.
As an example, the power supply system may further include a memory, and the memory stores a power threshold, where the power threshold may be set according to a demand, for example, may be determined according to the power storage capacity of the power storage unit 900.
In addition, the power supply system may further include a second controller (not shown), which may be connected to a control terminal of the second communicator, to control the second communicator to make or break the electrical connection between the first current converter 700 and the electrical energy storage unit 900, the second controller may be communicatively connected with the electrical energy storage unit 900, to obtain the stored/demanded power of the electrical energy storage unit 900, the second controller may also be communicatively connected to the memory, to obtain the threshold value of the amount of electricity stored in the memory, and when the amount of stored electricity is less than the threshold value of the amount of electricity, the second controller controls the second communicator to conduct the electrical connection between the first current converter 700 and the electrical energy storage unit 900, when the amount of stored power is greater than the power threshold value, the second controller controls the second connector to disconnect the electrical connection between the first current converter 700 and the electrical energy storage unit 900. Here, the electric energy storage unit 900 may be, for example, a storage battery.
It should be noted here that when the power supply source 101 is connected to the power output interface 300, that is, when the power supply source 101 supplies power to the electrical equipment to be powered, the second controller controls the second communicator to communicate the electrical connection between the first current converter 700 and the electrical energy storage unit 900, that is, when the power supply source 101 supplies power to the electrical equipment to be powered, and also supplies power to the electrical energy storage unit. Specifically, the current converted via the first current converter 700 may be supplied to both the power output interface 300 and the electrical energy storage unit 900.
In an embodiment of the present application, as shown in fig. 3, the power supply system may further include a third communicator 800, the third communicator 800 being connected between the first current converter 700 and the electrical energy storage unit 900 and the power output interface 300 to be able to connect one of the first current converter 700 and the electrical energy storage unit 900 to the power output interface 300.
As an example, the third communicator 800 may include a fourth switch K4 and a fifth switch K5, the fourth switch K4 may be connected between the first current converter 700 and the power output interface 300, and the fifth switch K5 may be connected between the electrical energy storage unit 900 and the power output interface 300.
When the power supply source is required to supply power to the powered device to be powered through the power output interface 300, the fourth switch K4 may be turned on/off to electrically connect the power supply source and the power output interface 300, so as to supply power to the powered device connected to the power output interface 300 through the power supply source, and at this time, the fifth switch K5 may be turned off; when it is not necessary to supply power to the power output interface 300 through the power supply source, the fifth switch K5 may be closed/turned on to electrically connect the power storage unit 900 and the power output interface 300 to supply low-voltage power (e.g., 12V power) to the power output interface 300 through the power storage unit 900 to support the power output interface 300 to operate, for example, to perform handshake communication with the electric device to be charged to sense the power demand of the electric device, at which time, the fourth switch K4 may be opened.
In an embodiment of the present application, the electrical energy storage unit 900 may also be electrically connected to one or more of the power distribution module 600, the first controller 500, the second controller, the power output interface 300, and the first connector 200, and specifically, the electrical energy storage unit 900 may supply power to one or more of the power distribution module 600, the first controller 500, the second controller, the power output interface 300, and the first connector 200 to support its own operation.
Furthermore, as shown in fig. 3, in the embodiment of the present application, the power supply system may further include a data transmission module 10, and the data transmission module 10 may be used for data transmission of the power supply system, for example, it may be communicatively connected with one or more of the power supply detector 400, the power output interface 300, the first controller 500, and the power distribution module 600, so as to implement data transmission between any two.
Further, in embodiments of the present application, all communication connections (e.g., connections shown by dashed lines in fig. 3) may be implemented by Controller Area Network (CAN) communication.
The power supply system according to the embodiment of the present application allows selecting one of a plurality of power supply sources to be electrically connected to the power output interface 300 according to the power supply power of each of the plurality of power supply sources to supply power to the power-using device, thereby achieving load balancing between the plurality of power supply sources.
Specifically, in an example in which the power supply unit is a three-phase power supply, as shown in fig. 3, the first connector 200 may include a first switch K1, a second switch K2, and a third switch K3 corresponding to the U-phase, the V-phase, and the W-phase of the three-phase power supply, respectively. When the power output interface 300 such as a charging gun is inserted into an electric device such as a trolley car to be charged or other object to be charged, handshake communication with a battery of the electric device is performed through the power output interface 300, demand information of the battery of the electric device is relaxed to the data transmission module 10/power distribution module 600 through a communication cable, and the power supply detector 400 may monitor a real-time state of access power of three phases (i.e., U-phase, V-phase, and W-phase shown in fig. 3) of the charging yard grid through CAN communication and transmit each of the detected considerably previously accessed power supplies to the power distribution module 600 to determine one phase in which the access power is the minimum among the phases and transmit the determination result to the first controller 500. When it is determined that the access power of one of the U-phase, the V-phase, and the W-phase is the minimum, the first controller 500 may select the switch (the first switch K1, the second switch K2, or the third switch K3) corresponding to the minimum access power to switch on for power supply, so that the power output interface 300, such as a charging gun, is connected to the power grid, thereby achieving the purpose of balancing power distribution of each phase and keeping the power grid operating stably.
In the above process, the first current converter 700, such as an AC/DC converter, sets AC power to DC power, when the power output interface 300, such as a charging gun, operates, the first controller 500 may provide DC power to the power output interface 300, and the charger integrated with the AC/DC converter may charge the electric energy storage unit 900, such as a storage battery, with supplementary electric energy while the power output interface 300 supplies power to external electric equipment, so as to ensure that sufficient electric energy is stored in the electric energy storage unit 900 before next charging, thereby ensuring that the devices of the whole power supply system can operate normally.
As shown in fig. 4, a power supply method of a power supply system is provided according to a second aspect of the present application. Here, the power supply system may be implemented as the power supply system described in the embodiment of the first aspect of the present application, and is not described herein again.
The power supply method of the power supply system according to the embodiment of the application may include the steps of:
and S1, acquiring the power supply power of each power supply source in the plurality of power supply sources through the power supply detector.
In this step, the power supply detector 400 may be connected in communication with each of the plurality of power supply sources 101 to be able to acquire the power supply power of each of the plurality of power supply sources 101.
And S2, connecting one power supply source in the plurality of power supply sources to the power output interface through the first communicating vessel according to the power supply power of the plurality of power supply sources.
In an example, the power supply system may further include the first controller and the power distribution module described in the embodiments of the first aspect of the present application.
In this example, step S2 may include: comparing the magnitudes of the power supplies of the plurality of power supplies 101 by the power distribution module 600, and determining the power supply with the minimum power supply among the plurality of power supplies 101; transmitting the comparison result indicating the power supply source having the minimum power supply power to the first controller 500 through the power distribution module 600; the first connector 200 is controlled by the first controller 500 to connect the power supply source having the minimum power supply to the power output interface 300.
In this step, in another example, the first controller 500 may directly receive the power supply power of each power supply source 101 acquired by the power supply detector 400, and compare the power supply power of each power supply source 101 to determine the power supply source 101 with the minimum power supply power among the plurality of power supply sources 101, and the first controller 500 may control the first communicator 200 to connect the power supply source 101 with the minimum power supply power to the power output interface 300.
And S3, supplying power to the electric equipment through the power output interface.
In this step, the power to be supplied to the electric device may be supplied through the power output interface 300.
In an embodiment of the present application, the power supply system may further comprise a first current converter as described in an embodiment of the first aspect of the present application; the power supply method of the power supply system according to the embodiment of the present application may further include: the ac power from the power supply source is converted into the dc power or the dc power from the power supply source is converted into the ac power by the first current converter 700.
In an embodiment of the present application, the power supply system may further comprise an electrical energy storage unit, a second communicator, a second controller and a memory as described in an embodiment of the first aspect of the present application; the power supply method of the power supply system according to the embodiment of the present application may further include: acquiring the stored electric quantity of the electric energy storage unit through the second controller, acquiring an electric quantity critical value from the storage, and comparing the stored electric quantity with the electric quantity critical value; and when the comparison result shows that the stored electricity quantity is smaller than the electricity quantity critical value, the second controller controls the second communicating device to enable the first current converter and the electric energy storage unit to be electrically connected and conducted.
In an embodiment of the present application, the power supply system may further comprise a third communicator as described in an embodiment of the first aspect of the present application; the power supply method of the power supply system according to the embodiment of the present application may further include: one of the first current converter and the electrical energy storage unit is connected to the power output interface through the third communicator.
The power supply method of the power supply system according to the embodiment of the present application may further include: one or more of the power distribution module, the first controller, the second controller, the power output interface, the first connector are powered by the electrical energy storage unit.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the method described above may refer to the corresponding process in the foregoing device embodiment, and is not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme of the application.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
According to the power supply system and the power supply method of the power supply system of the present application, when the power consumption device to be powered needs to be powered, the power supply power of the plurality of power supply sources may be detected by the power supply detector, and one of the plurality of power supply sources may be connected to the power output interface through the first communicator provided between the power supply unit and the power output interface, thereby allowing the power consumption device to be powered by selecting an appropriate power supply source from the plurality of power supply sources according to the power supply power.
In addition, according to the power supply system and the power supply method of the power supply system, the automatic control of the connection operation of the first connector can be realized by arranging the first controller.
In addition, according to the power supply system and the power supply method of the power supply system, the power distribution module is arranged, so that the power supply source with the minimum power supply power can be determined from the multiple power supply sources, the first connector can be controlled to enable the power supply source to supply power to the power consumption equipment, load balance among the multiple power supply sources is achieved, and the condition that the load of a specific power supply source is overlarge is avoided.
In addition, according to the power supply system and the power supply method of the power supply system, the electric energy storage unit can be charged in time by comparing the stored electric quantity of the electric energy storage unit with a preset electric quantity critical value, and each device of the power supply system can work normally.
In addition, according to the power supply system and the power supply method of the power supply system of the present application, by connecting the electric energy storage unit to the first current converter, it is possible to realize that both the electric equipment and the electric energy storage unit are charged simultaneously by the power supply source.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A power supply system is characterized by comprising a power output interface, a power supply unit, a first communicating device and a power supply detector,
the power output interface is used for being electrically connected with electric equipment to be powered so as to supply power to the electric equipment,
the power supply unit includes a plurality of power supply sources, the first communicator is provided between the power supply unit and the power output interface, the first communicator is capable of connecting one of the plurality of power supply sources to the power output interface,
the power supply detector detects a power supply power of each of the plurality of power supply sources.
2. The power supply system of claim 1, further comprising a first controller connected between the first connector and the power output interface, the first controller being connected to a control terminal of the first connector to control the first connector to connect one of the plurality of power supply sources to the power output interface.
3. The power supply system of claim 2, further comprising a power distribution module, wherein the power supply detector is communicatively coupled to the power distribution module to transmit the detected power supply of each power supply source to the power distribution module,
the power distribution module compares the power supply power of the power supply sources to determine the power supply source with the minimum power supply power in the power supply sources, and sends a comparison result representing the power supply source with the minimum power supply power to the first controller, and the first controller controls the first connector to connect the power supply source with the minimum power supply power to the power output interface.
4. The power supply system of claim 3, further comprising a first current converter disposed between the first communicator and the power output interface to convert alternating current from a power supply to direct current or direct current from a power supply to alternating current.
5. The power supply system according to claim 4, further comprising an electric energy storage unit connected to the first current converter to receive the electric power converted by the first current converter and a second communicator,
the second communicator is disposed between the first current converter and the electric energy storage unit to turn on or off an electrical connection between the first current converter and the electric energy storage unit.
6. The power supply system according to claim 5, further comprising a second controller and a memory, wherein the memory stores a power threshold value, the second controller is capable of obtaining the stored power of the electric energy storage unit and obtaining the power threshold value from the memory, and when the stored power is smaller than the power threshold value, the second controller controls the second communicator to conduct the electrical connection between the first current converter and the electric energy storage unit.
7. The power supply system of claim 5, further comprising a third communicator connected between the first current converter and the electrical energy storage unit and the power output interface to enable connection of one of the first current converter and the electrical energy storage unit to the power output interface.
8. The power supply system of claim 5, wherein the electrical energy storage unit is electrically connected to one or more of the power distribution module, the first controller, the power output interface, and the first connector.
9. A power supply method of a power supply system, the power supply system comprising a power output interface, a power supply unit, a first communicator and a power supply detector, the power output interface being used for being electrically connected with a power consumption device to be powered, the power supply unit comprising a plurality of power supply sources, the first communicator being arranged between the power supply unit and the power output interface, the power supply method of the power supply system comprising:
acquiring, by the power supply detector, power supply power of each of the plurality of power supply sources;
connecting one of the plurality of power supply sources to the power output interface through the first communicator according to the power supply power of the plurality of power supply sources;
and supplying power to the electric equipment through the power output interface.
10. The power supply method of the power supply system according to claim 9, characterized in that the power supply system further includes a first controller and a power distribution module, the first controller is connected between the first connector and the power output interface, the power supply detector is connected in communication with the power distribution module,
connecting one of the plurality of power supply sources to the power output interface through the first communicator according to the power supply powers of the plurality of power supply sources, including:
comparing the power supply power of the plurality of power supply sources through the power distribution module, and determining the power supply source with the minimum power supply power in the plurality of power supply sources;
transmitting, by the power distribution module, a comparison result indicating a power supply source whose power supply power is minimum to the first controller;
and controlling the first connector to connect the power supply source with the minimum power supply power to the power output interface through the first controller.
CN202110887520.9A 2021-08-03 2021-08-03 Power supply system and power supply method of power supply system Pending CN113471969A (en)

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CN111313528A (en) * 2020-03-12 2020-06-19 姜家刚 Multifunctional power supply system and power supply equipment
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CN215419598U (en) * 2021-08-03 2022-01-04 恩吉（福建）工业装备有限公司 Power supply system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102801208A (en) * 2012-08-31 2012-11-28 安徽工业大学 Multi-path power supply intelligent scheduling manager and control method thereof
CN105409080A (en) * 2013-07-29 2016-03-16 京瓷株式会社 Power conversion device, method of controlling power conversion device, and power conversion system
CN111313528A (en) * 2020-03-12 2020-06-19 姜家刚 Multifunctional power supply system and power supply equipment
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