CN112467861B - Power supply switching system, control method and device thereof and motor home air conditioner power supply system - Google Patents

Power supply switching system, control method and device thereof and motor home air conditioner power supply system Download PDF

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Publication number
CN112467861B
CN112467861B CN202011308815.8A CN202011308815A CN112467861B CN 112467861 B CN112467861 B CN 112467861B CN 202011308815 A CN202011308815 A CN 202011308815A CN 112467861 B CN112467861 B CN 112467861B
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power
power supply
input end
power input
output end
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CN112467861A (en
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杨思城
李荫珑
廖坤
李贤隆
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/36—Arrangements using end-cell switching
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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

Abstract

The invention discloses a power supply switching system, a control method and device thereof and a motor home air conditioner power supply system. Wherein, this system includes: a plurality of power inputs and power outputs; and the power supply switching device is used for disconnecting the connection between the first power supply input end and the first power supply output end and conducting the connection between the second power supply input end and the corresponding second power supply output end if the second power supply input end is detected to be connected with the second power supply under the condition that the first power supply input end and the corresponding first power supply output end are connected with the first power supply, wherein the second power supply input end is any power supply input end different from the first power supply input end. The invention solves the technical problem that the switching mode of the power supply system of the air conditioner of the motor home in the prior art is easy to cause a plurality of power supplies to supply power to the air conditioner simultaneously.

Description

Power supply switching system, control method and device thereof and motor home air conditioner power supply system
Technical Field
The invention relates to the field of air conditioner control, in particular to a power supply switching system, a control method and device thereof and a motor home air conditioner power supply system.
Background
At present, the air conditioner of the motor home is powered by a single power supply, can store energy sources such as commercial power, storage batteries, solar energy, hydrogen energy and the like, and is converted into alternating current through an inverter to power a compressor or a fan. In response to the diversification of power schemes, a user needs to frequently adjust the input of power when switching power.
The power supply switching scheme commonly used at present comprises a manual setting switch, a chip control relay opening and the like, and the situations that switching is abnormal due to hurry in switching and a plurality of relays are controlled to be closed by a chip port to cause simultaneous power supply access are possibly generated; the situation that a user forgets to turn off the last power input to cause multiple power supplies to work simultaneously is easy to occur, and the situations not only can cause resource waste, but also can influence the service life of the air conditioner power supply.
Aiming at the problem that a plurality of power supplies are easy to supply power for an air conditioner in the switching mode of power supply switching of an air conditioner power supply system of a motor home in the prior art, no effective solution is proposed at present.
Disclosure of Invention
The embodiment of the invention provides a power supply switching system, a control method and a control device thereof and a motor home air conditioner power supply system, which at least solve the technical problem that a plurality of power supplies are easy to supply power to an air conditioner simultaneously in a switching mode of power supply switching of the motor home air conditioner power supply system in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a power switching system including: a plurality of power inputs and power outputs; and the power supply switching device is used for disconnecting the connection between the first power supply input end and the first power supply output end and conducting the connection between the second power supply input end and the corresponding second power supply output end if the second power supply input end is detected to be connected with the second power supply under the condition that the first power supply input end and the corresponding first power supply output end are connected with the first power supply, wherein the second power supply input end is any power supply input end different from the first power supply input end.
Further, the power input terminal includes: the power detection module is used for detecting whether a power input end has power access, wherein the power detection module comprises: the first resistor, the second resistor and a diode are sequentially connected in series between the live wire and the zero wire; a detection power supply for supplying direct current; the input end of the optical coupler is connected with the second resistor in parallel, the collector of the output end of the optical coupler is connected with the detection power supply through the third resistor, and the emitter of the output end of the optical coupler is grounded through the fourth resistor; the detection pin is connected to the emitter of the output end of the optocoupler through a fifth resistor; the detection pin detects a high level when the power input end is connected with a power supply, and detects a low level when the power input end is not connected with the power supply.
Further, the power supply switching device includes: the power input end is arranged at the upper end of the shell, and the power output end is arranged at the lower end of the shell; the plurality of groups of wires penetrate through the shell, each group of wires is connected with a pair of power input end and power output end, one wire in each group of wires is disconnected, and the disconnected two ends are respectively connected with the two metal sheets which are not contacted; the sliding groove is transversely arranged in the shell, and the two metal sheets are oppositely abutted against the inner wall of the sliding groove; a sliding part which is allowed to slide in the sliding groove, and contacts with the two opposite metal sheets when the sliding part slides to a designated position, so that a power input end and a power output end corresponding to a wire connected with the two metal sheets are conducted; and the sliding selection device is used for controlling the sliding part to slide in the sliding groove.
Further, the two metal sheets are arc-shaped metal sheets with opposite grooves, and the sliding part is a metal ball.
Further, the slide selecting device includes: a wind sweeping motor; the telescopic rod, one end of the telescopic rod is connected with the sliding part through the opening on the sliding groove, and the second end of the telescopic rod is connected with the wind sweeping motor; the wind sweeping motor obtains a target position of a target metal sheet in the sliding groove, and controls the telescopic rod to move the sliding part to the target position through telescopic action, wherein the target metal sheet is two metal sheets connected with leads corresponding to the second power input end and the second power output end.
Further, the slide selecting device includes: a wind sweeping motor; the anti-falling boss clamps the sliding part at the hollowed-out part to move up and down; the wind sweeping motor obtains a target position of a target metal sheet in the sliding groove, the insulating hollow part is controlled to rotate, the sliding part is horizontally moved to the target position under the influence of the sliding groove and the insulating hollow part, and the target metal sheet is two metal sheets connected with a lead corresponding to the second power input end and the second power output end.
According to another aspect of the embodiment of the present invention, there is also provided a control method of a power switching system, the power switching system including a plurality of power input terminals and power output terminals, the control method of the power switching system including: detecting whether a second power input end is connected with a second power supply or not under the condition that the first power input end and a corresponding first power output end are connected with a first power supply, wherein the second power input end is any power input end different from the first power input end; and under the condition that the second power input end is connected with the second power, the connection between the first power input end and the first power output end is disconnected, and the connection between the second power input end and the corresponding second power output end is conducted.
Further, the wire between the power input terminal and the corresponding power output terminal has a break point, the power switching system further includes a sliding member allowing sliding between the break points through the sliding groove, and under the condition that the second power input terminal is connected to the second power, the connection between the first power input terminal and the first power output terminal is disconnected, and the connection between the second power input terminal and the corresponding second power output terminal is turned on, including: obtaining a target position of a target metal sheet in the sliding groove, wherein the target metal sheet is two metal sheets connected with leads corresponding to the second power input end and the second power output end; and controlling the sliding part to slide from the current position to the target position, wherein the first power input end and the first power output end of the sliding part are connected when the sliding part is at the current position, and the second power input end and the second power output end of the sliding part are connected when the sliding part is at the target position.
Further, the power switching system further includes a wind sweeping motor controlling the sliding member to slide from the current position to the target position, including: the wind sweeping motor acquires the current position of the sliding part in the sliding groove; the wind sweeping motor stretches and contracts through rotating and controlling a telescopic rod connected with the sliding component so as to move the sliding component to a target position; or the wind sweeping motor moves by rotating and controlling the insulating hollow part to move the sliding part to the target position, wherein when the insulating hollow part rotates under the drive of the wind sweeping motor, the sliding part moves in the sliding groove after being involved by the sliding groove and the insulating hollow part.
According to another aspect of the embodiment of the present invention, there is also provided a control device of a power switching system, the power switching system including a plurality of power input terminals and a plurality of power output terminals, the control device of the power switching system including: the detection module is used for detecting whether the second power input end is connected with a second power supply or not under the condition that the first power input end and the corresponding first power output end are connected with the first power supply, wherein the second power input end is any power input end different from the first power input end; and the control module is used for disconnecting the connection between the first power input end and the first power output end and conducting the connection between the second power input end and the corresponding second power output end under the condition that the second power input end is connected with the second power.
According to another aspect of the embodiment of the invention, a power supply system of a motor home air conditioner is further provided, and the power supply system of the motor home air conditioner comprises the power supply switching system.
In the embodiment of the invention, the power supply switching system comprises a plurality of power supply input ends and a plurality of power supply output ends, and a power supply switching device, wherein the power supply switching device is arranged under the condition that the first power supply input end and the corresponding first power supply output end are connected with a first power supply, if the second power supply input end is detected to be connected with a second power supply, the connection between the first power supply input end and the first power supply output end is disconnected, and the connection between the second power supply input end and the corresponding second power supply output end is conducted, wherein the second power supply input end is any power supply input end different from the first power supply input end. According to the scheme, when the latest power supply input is monitored, the latest power supply is switched to work through the power supply switching device, so that the technical effect of single power supply output of multiple power supply inputs is achieved, the technical problem that multiple power supplies are supplied for an air conditioner simultaneously due to the fact that the switching mode of the power supply switching of the motor home air conditioner power supply system in the prior art is solved, and the multi-power supply protection device serving as the isolated input is unique in control object and simple in control mode.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram of a power switching system according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a power detection module according to an embodiment of the invention;
FIG. 3a is a schematic diagram of an internal structure of a power switching system according to an embodiment of the present invention;
FIG. 3b is a perspective view of a power switching system according to an embodiment of the present invention;
FIG. 3c is a top view of a power switching system according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of a metal ball control device according to an embodiment of the present invention;
FIG. 4b is a schematic diagram of the metal ball control device of FIG. 4a applied to a power switching system according to an embodiment of the present invention;
fig. 5 is a flowchart of a control method of a power switching system according to an embodiment of the present invention;
FIG. 6 is a flow chart of an alternative method of controlling a power switching device according to an embodiment of the present invention; and
fig. 7 is a schematic diagram of a control device of a power switching system according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, there is provided an embodiment of a power switching system, fig. 1 is a schematic diagram of a power switching system according to an embodiment of the present invention, as shown in fig. 1, the system includes:
a plurality of power inputs 10 and power outputs 20.
The power switching device 30, in the case that the first power input end and the corresponding first power output end are connected to the first power, disconnects the connection between the first power input end and the first power output end and turns on the connection between the second power input end and the corresponding second power output end if the second power input end is detected to be connected to the second power, wherein the second power input end is any power input end different from the first power input end.
It should be noted that the number of the power supply output terminals may be one or plural. That is, the first power output terminal and the second power output terminal may be the same power output terminal or may be different power output terminals. Fig. 1 and the following description of the present embodiment take a power switching system including a plurality of power output terminals as an example.
Specifically, the multi-power input end can be connected with a series of power supplies such as a storage battery, a solar panel, hydrogen energy, commercial power and the like. The power supply input end of the power supply switching system corresponds to the power supply output end, and the power supply output end is connected to equipment such as a rear-end load or an inverter. If the power supply is a direct current power supply, the power supply input end and the power supply output end can be connected through positive and negative wires, and if the power supply is an alternating current power supply, the power supply input end and the power supply output end can be connected through a zero line and a fire wire.
The power supply switching device is arranged between the power supply input end and the power supply output end and is used for connecting or disconnecting the power supply input end and the corresponding power supply output end according to the condition that the power supply input end is connected with a power supply, so that only one power supply access device is realized.
First, a special case is described, in an alternative embodiment, the power switching system is not connected to any power source, and when one of the power input terminals is detected to be connected to the power source, the power switching conducts between the power input terminal and the corresponding power output terminal, so as to realize power supply to the equipment. At this time, the power switching system is only used for connecting the power input end and the power output end of the power supply, so as to supply power to the back-end equipment, and does not perform a switching function.
Therefore, the switching operation of the power switching device actually occurs when a plurality of power input terminals are connected to the power supply. In the case that the first power input end connected with the power supply exists, if the second input end connected with the power supply is detected, the user considers that the equipment needs to be switched from the first power supply to the second power supply, so that the power input end connected with the first power supply is disconnected from the first power supply output end, the second power input end connected with the second power supply is connected with the second power supply output end, and the power supply is switched. In the power supply switching process, a user only needs to access the system into a new power supply, other operations are not needed, and the system can be automatically switched, so that the situation that a plurality of power supplies supply power to equipment together is avoided.
In an alternative embodiment, also shown in connection with fig. 1, in this example the power switching system has three power inputs 10 and three power outputs 20, each of which corresponds in position to the power outputs. The power switching device 30 is arranged between the power input end 10 and the three power output ends 20, a sliding component is arranged in the power switching device 30, the sliding component is allowed to slide leftwards or rightwards according to the arrow direction, and when the sliding component slides between the position 1 and the position 4, the leftmost power input end and the power output end are conducted; when the sliding part slides between the position 2 and the position 5, the power input end and the power output end in the middle are conducted; when the slide member slides between position 3 and position 6, the rightmost power input and power output are turned on.
Based on the above system, in one example, the sliding member is between position 1 and position 4, the power input of position 1 is connected to the power supply to supply power to the device, and at this time, according to the operation of the user, the power input of position 2 is connected to the new power supply. Under the condition that the power input end of the position 2 is detected to be connected with a new power supply, the sliding part slides rightwards and slides between the position 2 and the position 5, so that the power input end of the position 1 is disconnected with the power output end of the position 4, the power input end of the position 2 is connected with the power output end of the position 5, and the new power supply can be used for supplying power to the equipment no matter whether a user disconnects the power input end of the position 1 from the power supply or not.
It can be seen that, in the above embodiment of the present application, the power switching system includes a plurality of power input ends and a plurality of power output ends, and a power switching device, where the power switching device is installed in a case that the first power input end and the corresponding first power output end have been connected to the first power source, if the second power input end is detected to be connected to the second power source, the connection between the first power input end and the first power output end is disconnected, and the connection between the second power input end and the corresponding second power output end is conducted, where the second power input end is any power input end different from the first power input end. According to the scheme, when the latest power supply input is monitored, the latest power supply is switched to work through the power supply switching device, so that the technical effect of single power supply output of multiple power supply inputs is achieved, the technical problem that multiple power supplies are supplied for an air conditioner simultaneously due to the fact that the switching mode of the power supply switching of the motor home air conditioner power supply system in the prior art is solved, and the multi-power supply protection device serving as the isolated input is unique in control object and simple in control mode.
As an alternative embodiment, the power input terminal includes: the power detection module is used for detecting whether a power input end is connected with a power supply or not, wherein the power detection module comprises: the first resistor, the second resistor and a diode are sequentially connected in series between the live wire and the zero wire; a detection power supply for supplying direct current; the input end of the optical coupler is connected with the second resistor in parallel, the collector of the output end of the optical coupler is connected with the detection power supply through the third resistor, and the emitter of the output end of the optical coupler is grounded through the fourth resistor; the detection pin is connected to the emitter of the output end of the optocoupler through a fifth resistor; the detection pin detects a high level when the power input end is connected with a power supply, and detects a low level when the power input end is not connected with the power supply.
Fig. 2 is a circuit diagram of a power detection module according to an embodiment of the present invention, and in conjunction with fig. 2, a first resistor R1, a second resistor R2, and a diode D1 are connected in series between a live line L and a neutral line N. The input end of the optical coupler U1A is connected with the second resistor R2 in parallel, the collector electrode of the triode at the output end of the optical coupler U1A is connected with the direct current power supply VDD through the third resistor R3, the emitter electrode is grounded through the fourth resistor R4, and a detection pin is formed through the fifth resistor R5.
When an external power supply exists, a loop is formed by L- > R1- > R2 (or the left end (1- > 2) of U1A) - > D1- > N, the current flowing through R1 and R2 changes, the optical coupler U1A causes the illumination intensity to change according to the flowing current, so that the right end (8- > 7) of U1A generates voltage drop, the right end (8- > 7) - > R4- > GND of U1A can form the loop, and the position of a chip detection pin 7 is at a high level, namely the input end has power supply input; if no external power supply exists, no current flows through the left end (1- > 2) of the U1A, no loop can be formed to cause illumination intensity change, no voltage drop is generated at the right end (8- > 7) of the U1A, and the chip detection pin detects that the position of the pin 7 is at a low level, namely the input end has no power supply input. Therefore, the scheme can realize the input of the monitoring power supply through the simple component combination.
Fig. 3a is a schematic diagram of an internal structure of a power switching system according to an embodiment of the present invention, and as an alternative embodiment, in combination with fig. 3a, the power switching device includes:
the power supply input end 10 is arranged at the upper end of the shell 30, and the power supply output end 20 is arranged at the lower end of the shell 30;
a plurality of groups of wires 36 passing through the housing, each group of wires connecting a pair of the power input terminal 10 and the power output terminal 20, wherein one wire of each group of wires is disconnected, and both ends of the disconnected wires are respectively connected with the two non-contact metal sheets 33;
a sliding groove 38 transversely arranged in the housing 30, wherein the two metal sheets 33 are oppositely abutted against the inner wall of the sliding groove;
a sliding member 34 allowed to slide in the sliding groove 38, and brought into contact with the two opposing metal pieces 33 when the sliding member 34 is slid to a specified position, to conduct the power input terminal 10 and the power output terminal 20 corresponding to the leads 36 connected to the two metal pieces 33;
and a slide selection means 35 for controlling the sliding of the slide member 34 within the slide groove 38.
Fig. 3b is a perspective view of a power switching system according to an embodiment of the present invention, and fig. 3c is a top view of a power switching system according to an embodiment of the present invention. As shown in fig. 3a, 3b, and 3c, the upper end of the housing 30 is provided with a power input terminal 10, the lower end is provided with a corresponding power output terminal 20, and the positions of the pair of power input terminals 10 and power output terminals at the upper end and the lower end of the housing 30 are corresponding. Two wires 36 penetrating through the shell 30 are arranged between each pair of the power input end 10 and the power output end 20, one of the two wires 36 is disconnected, the disconnected part is positioned in the sliding groove 38, and when the sliding part 34 slides to the disconnected part of any wire, the wire can be connected, so that the power input end and the power output end corresponding to the wire are connected. Since the slide groove 38 has only one slide member 34, the slide member 34 is capable of conducting only one pair of the power input terminal and the power output terminal, even in the case where a plurality of power input terminals are connected to the power source, only one power input terminal is conducted to the power output terminal, thereby enabling only one power source to supply power to the rear load.
As an alternative embodiment, the two metal sheets are arc-shaped metal sheets with opposite grooves, and the sliding component is a metal ball.
Because the sliding part is the metal ball, and two sheetmetals are the arcuation sheetmetal that the recess is relative to the target position is between the arcuation sheetmetal that two recesses are relative, consequently when the sliding part moved to the target position, as long as the sliding selection part did not carry out slip control, the sliding part just can be stable with sheetmetal contact, thereby stable be connected power input and power output, and then make the power that newly inserts can be stable.
As an alternative embodiment, the slide selection device includes: a wind sweeping motor; the telescopic rod, one end of the telescopic rod is connected with the sliding part through the opening on the sliding groove, and the second end of the telescopic rod is connected with the wind sweeping motor; the wind sweeping motor obtains a target position of a target metal sheet in the sliding groove, and controls the telescopic rod to move the sliding part to the target position through telescopic action, wherein the target metal sheet is two metal sheets connected with leads corresponding to the second power input end and the second power output end.
Specifically, the wind sweeping motor is provided with a chip port control, and the rotating angle of the motor can be adjusted by outputting high and low level signals; the telescopic rod is used as a connecting bridge of the wind sweeping motor and the metal ball (namely the sliding part), can freely stretch, insulate and cannot bend; the metal ball moves to the position corresponding to the metal sheet in the telescopic process of the telescopic rod, so that the metal ball and the telescopic rod are in contact and conduct; the sliding groove is used for loading the metal balls, and the metal balls can only move in the sliding groove.
Still referring to fig. 3a, according to the power detection module determining the power input condition of the power input terminal 10, the metal ball 34 is moved to a corresponding position to contact the metal sheet 33 for conducting electricity, so that the power is supplied to the rear load and the rear load does not supply power. In an alternative embodiment, corresponding coordinate parameters are set for each group of metal sheets 34 according to the position of each group of metal sheets 34 in the sliding groove 38, a target metal sheet is determined according to the power input condition, the position of the target metal ball is the target position, so that the moving coordinate of the metal ball 34 is determined, the wind sweeping motor 35 combines the four-phase eight-beat principle, the rotation angle and the beat number are calculated, and the high-low level signal output frequency is adjusted to control the wind sweeping motor to rotate. The wind sweeping motor 35 rotates, and the stretchable material 37 connecting the two cannot bend under tension, only stretches and contracts, and then pushes the metal ball 34 to move in the sliding groove 38. The metal ball 34 and the metal sheet 33 can conduct electricity, the metal ball 34 moves to the target position to contact with the metal sheet 33, a loop is formed between a group of power input ends and power output ends, so that a power supply is normally connected to the power output ends, a rear end load connected to the power output ends can normally work, and the power output ends which do not form the loop cannot normally work, thereby realizing control over multiple power inputs.
According to the scheme, based on the thought that the wind sweeping motor rotates to drive the structure to move, the rotating angle of the motor is adjusted through level height change, and a control system with multiple power inputs and single power output is constructed. According to the scheme, the angle of the wind sweeping motor is controlled through the chip opening, and the metal ball is driven to be in contact with the metal sheet to conduct electricity, so that the function of power supply access work is realized, and the possibility of simultaneous access work of multiple power supplies is fundamentally avoided.
As an alternative embodiment, the slide selecting device includes: a wind sweeping motor; the anti-falling boss clamps the sliding part at the hollowed-out part to move up and down; the wind sweeping motor obtains a target position of a target metal sheet in the sliding groove, the insulating hollow part is controlled to rotate, the sliding part is horizontally moved to the target position under the influence of the sliding groove and the insulating hollow part, and the target metal sheet is two metal sheets connected with a lead corresponding to the second power input end and the second power output end.
Fig. 4a is a schematic diagram of a metal ball control device according to an embodiment of the present invention, and fig. 4b is a schematic diagram of a metal ball control device in fig. 4a applied to a power switching system according to an embodiment of the present invention, and referring to fig. 4a and 4b, the metal ball 34 can move up and down in a hollowed-out area of the insulating material 40, and the anti-falling boss 42 prevents the metal ball 34 from falling out of control of the insulating material 40. The wind-sweeping motor 35 inlet 41 is connected to a rotating portion of the wind-sweeping motor 35, and moves in a direction following the rotation of the wind-sweeping motor 35. Because the movable area of the metal ball 34 is limited to the sliding groove 38, the wind sweeping motor 35 drives the insulating material 40 to change in angle, so that the metal ball 34 translates under the influence of the sliding groove 38 and the insulating material 40. When the power is detected to be connected, the metal ball 34 is driven to move to the position corresponding to the metal sheet 33 to contact and conduct electricity, so that the function of power switching is realized.
Example 2
According to an embodiment of the present invention, there is provided an embodiment of a control method of a power switching system, it being noted that the steps shown in the flowcharts of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from this.
Fig. 5 is a flowchart of a control method of a power switching system according to an embodiment of the present invention, the power switching system including a plurality of power input terminals and power output terminals, as shown in fig. 5, the method including the steps of:
step S502, detecting whether the second power input end is connected to the second power under the condition that the first power input end and the corresponding first power output end are connected to the first power, wherein the second power input end is any power input end different from the first power input end.
Step S504, under the condition that the second power input end is connected with the second power, the connection between the first power input end and the first power output end is disconnected, and the connection between the second power input end and the corresponding second power output end is conducted.
It should be noted that the number of the power supply output terminals may be one or plural. That is, the first power output terminal and the second power output terminal may be the same power output terminal or may be different power output terminals. Fig. 1 and the following description of the present embodiment take a power switching system including a plurality of power output terminals as an example.
Specifically, the multi-power input end can be connected with a series of power supplies such as a storage battery, a solar panel, hydrogen energy, commercial power and the like. The power supply input end of the power supply switching system corresponds to the power supply output end, and the power supply output end is connected to equipment such as a rear-end load or an inverter. If the power supply is a direct current power supply, the power supply input end and the power supply output end can be connected through positive and negative wires, and if the power supply is an alternating current power supply, the power supply input end and the power supply output end can be connected through a zero line and a fire wire.
The power supply switching device is arranged between the power supply input end and the power supply output end and is used for connecting or disconnecting the power supply input end and the corresponding power supply output end according to the condition that the power supply input end is connected with a power supply, so that only one power supply access device is realized.
First, a special case is described, in an alternative embodiment, the power switching system is not connected to any power source, and when one of the power input terminals is detected to be connected to the power source, the power switching conducts between the power input terminal and the corresponding power output terminal, so as to realize power supply to the equipment. At this time, the power switching system is only used for connecting the power input end and the power output end of the power supply, so as to supply power to the back-end equipment, and does not perform a switching function.
Therefore, the switching operation of the power switching device actually occurs when a plurality of power input terminals are connected to the power supply. In the case that the first power input end connected with the power supply exists, if the second input end connected with the power supply is detected, the user considers that the equipment needs to be switched from the first power supply to the second power supply, so that the power input end connected with the first power supply is disconnected from the first power supply output end, the second power input end connected with the second power supply is connected with the second power supply output end, and the power supply is switched. In the power supply switching process, a user only needs to access the system into a new power supply, other operations are not needed, and the system can be automatically switched, so that the situation that a plurality of power supplies supply power to equipment together is avoided.
In an alternative embodiment, also shown in connection with fig. 1, in this example the power switching system has three power inputs 10 and three power outputs 20, each of which corresponds in position to the power outputs. The power switching device 30 is arranged between the power input end 10 and the three power output ends 20, a sliding component is arranged in the power switching device 30, the sliding component is allowed to slide leftwards or rightwards according to the arrow direction, and when the sliding component slides between the position 1 and the position 4, the leftmost power input end and the power output end are conducted; when the sliding part slides between the position 2 and the position 5, the power input end and the power output end in the middle are conducted; when the slide member slides between position 3 and position 6, the rightmost power input and power output are turned on.
Based on the above system, in one example, the sliding member is between position 1 and position 4, the power input of position 1 is connected to the power supply to supply power to the device, and at this time, according to the operation of the user, the power input of position 2 is connected to the new power supply. Under the condition that the power input end of the position 2 is detected to be connected with a new power supply, the sliding part slides rightwards and slides between the position 2 and the position 5, so that the power input end of the position 1 is disconnected with the power output end of the position 4, the power input end of the position 2 is connected with the power output end of the position 5, and the new power supply can be used for supplying power to the equipment no matter whether a user disconnects the power input end of the position 1 from the power supply or not.
It can be known that in the above embodiments of the present application, when the first power input end and the corresponding first power output end are connected to the first power source, whether the second power input end is connected to the second power source is detected, where the second power input end is any power input end different from the first power input end; step S404, under the condition that the second power input end is connected with the second power, the connection between the first power input end and the first power output end is disconnected, and the connection between the second power input end and the corresponding second power output end is conducted. According to the scheme, when the latest power supply input is monitored, the latest power supply is switched to work through the power supply switching device, so that the technical effect of single power supply output of multiple power supply inputs is achieved, the technical problem that multiple power supplies are supplied for an air conditioner simultaneously due to the fact that the switching mode of the power supply switching of the motor home air conditioner power supply system in the prior art is solved, and the multi-power supply protection device serving as the isolated input is unique in control object and simple in control mode.
As an alternative embodiment, the wire between the power input terminal and the corresponding power output terminal has a break point, the power switching system further includes a sliding member allowing sliding between the break points through the sliding groove, and in the case that the second power input terminal is connected to the second power, the connection between the first power input terminal and the first power output terminal is disconnected, and the connection between the second power input terminal and the corresponding second power output terminal is turned on, including:
obtaining a target position of a target metal sheet in the sliding groove, wherein the target metal sheet is two metal sheets connected with leads corresponding to the second power input end and the second power output end;
and controlling the sliding part to slide from the current position to the target position, wherein the first power input end and the first power output end of the sliding part are connected when the sliding part is at the current position, and the second power input end and the second power output end of the sliding part are connected when the sliding part is at the target position.
As shown in fig. 3a, the upper end of the housing 30 is provided with a power input terminal 10, the lower end is provided with a corresponding power output terminal 20, and the positions of the pair of power input terminals 10 and power output terminals at the upper end and the lower end of the housing 30 are corresponding. Two wires 36 penetrating through the shell 30 are arranged between each pair of the power input end 10 and the power output end 20, one of the two wires 36 is disconnected, the disconnected part is positioned in the sliding groove 38, and when the sliding part 34 slides to the disconnected part of any wire, the wire can be connected, so that the power input end and the power output end corresponding to the wire are connected. Since the slide groove 38 has only one slide member 34, the slide member 34 is capable of conducting only one pair of the power input terminal and the power output terminal, even in the case where a plurality of power input terminals are connected to the power source, only one power input terminal is conducted to the power output terminal, thereby enabling only one power source to supply power to the rear load.
As an alternative embodiment, the power switching system further includes a wind sweeping motor for controlling the sliding member to slide from the current position to the target position, including: the wind sweeping motor acquires the current position of the sliding part in the sliding groove; the wind sweeping motor stretches and contracts through rotating and controlling a telescopic rod connected with the sliding component so as to move the sliding component to a target position; or the wind sweeping motor moves by rotating and controlling the insulating hollow part to move the sliding part to the target position, wherein when the insulating hollow part rotates under the drive of the wind sweeping motor, the sliding part moves in the sliding groove after being involved by the sliding groove and the insulating hollow part.
Specifically, the above-described embodiments provide two ways of controlling the movement of the sliding member in the sliding groove, which will be described below.
In the first mode, the wind sweeping motor is provided with a chip port control, and the rotating angle of the motor can be adjusted by outputting high and low level signals; the telescopic rod is used as a connecting bridge of the wind sweeping motor and the metal ball (namely the sliding part), can freely stretch, insulate and cannot bend; the metal ball moves to the position corresponding to the metal sheet in the telescopic process of the telescopic rod, so that the metal ball and the telescopic rod are in contact and conduct; the sliding groove is used for loading the metal balls, and the metal balls can only move in the sliding groove.
Still referring to fig. 3a, according to the power detection module determining the power input condition of the power input terminal 10, the metal ball 34 is moved to a corresponding position to contact the metal sheet 33 for conducting electricity, so that the power is supplied to the rear load and the rear load does not supply power. In an alternative embodiment, corresponding coordinate parameters are set for each group of metal sheets 34 according to the position of each group of metal sheets 34 in the sliding groove 38, a target metal sheet is determined according to the power input condition, the position of the target metal ball is the target position, so that the moving coordinate of the metal ball 34 is determined, the wind sweeping motor 35 combines the four-phase eight-beat principle, the rotation angle and the beat number are calculated, and the high-low level signal output frequency is adjusted to control the wind sweeping motor to rotate. The wind sweeping motor 35 rotates, and the stretchable material 37 connecting the two cannot bend under tension, only stretches and contracts, and then pushes the metal ball 34 to move in the sliding groove 38. The metal ball 34 and the metal sheet 33 can conduct electricity, the metal ball 34 moves to the target position to contact with the metal sheet 33, a loop is formed between a group of power input ends and power output ends, so that a power supply is normally connected to the power output ends, a rear end load connected to the power output ends can normally work, and the power output ends which do not form the loop cannot normally work, thereby realizing control over multiple power inputs.
In a second mode, fig. 4 is a schematic diagram of a metal ball control device according to an embodiment of the present invention, and referring to fig. 3a and 4, the metal ball 34 can move up and down in the hollow area of the insulating material 40, and the anti-falling boss 42 prevents the metal ball 34 from falling out of control of the insulating material 40. The wind-sweeping motor 35 inlet 41 is connected to a rotating portion of the wind-sweeping motor 35, and moves in a direction following the rotation of the wind-sweeping motor 35. Because the movable area of the metal ball 34 is limited to the sliding groove 38, the wind sweeping motor 35 drives the insulating material 40 to change in angle, so that the metal ball 34 translates under the influence of the sliding groove 38 and the insulating material 40. When the power is detected to be connected, the metal ball 34 is driven to move to the position corresponding to the metal sheet 33 to contact and conduct electricity, so that the function of power switching is realized.
Fig. 6 is a flowchart of an alternative control method of a power switching device according to an embodiment of the present invention, and in conjunction with the flowchart shown in fig. 6, a chip (for controlling rotation of a wind sweeping motor, not shown in fig. 3 a) is initialized, the wind sweeping motor is adjusted to be at a default angle, and a power detection module is used to determine the power on condition. And calculating the rotation angle of the wind sweeping motor according to the power supply access condition, controlling the wind sweeping motor to rotate, moving the metal balls, enabling the corresponding metal sheets to be in contact and conduction, and inputting a power supply to work. When other power supplies are detected to be connected, the latest power supply position is calculated, and the rotating wind sweeping motor rotates, so that the switching of the power supplies is completed.
Example 3
According to an embodiment of the present invention, there is provided an embodiment of a control device of a power switching system, fig. 7 is a schematic diagram of the control device of the power switching system according to the embodiment of the present invention, the power switching system including a plurality of power input terminals and a power output terminal, as shown in fig. 7, the device including:
the detection module 70 is configured to detect whether the second power input terminal is connected to the second power source when the first power input terminal and the corresponding first power output terminal are connected to the first power source, where the second power input terminal is any power input terminal different from the first power input terminal.
The control module 72 is configured to disconnect the connection between the first power input and the first power output and to connect the second power input and the corresponding second power output in case that the second power input is connected to the second power.
As an alternative embodiment, the conductor between the power input and the corresponding power output has a break point, the power switching system further comprises a sliding member allowing sliding between the plurality of break points via the sliding slot, and in case the second power input is connected to the second power source, the control module comprises: the acquisition sub-module is used for acquiring the target position of a target metal sheet in the sliding groove, wherein the target metal sheet is two metal sheets connected with leads corresponding to the second power input end and the second power output end; and the control sub-module is used for controlling the sliding part to slide from the current position to the target position, wherein the first power input end is connected with the first power output end when the sliding part is at the current position, and the second power input end is connected with the second power output end when the sliding part is at the target position.
As an alternative embodiment, the power supply switching system further includes a wind sweeping motor, and the control submodule includes: the acquisition unit is used for acquiring the current position of the sliding part in the sliding groove by the wind sweeping motor; the first moving unit is used for enabling the wind sweeping motor to stretch and retract through rotating and controlling a telescopic rod connected with the sliding component so as to move the sliding component to a target position; or the second moving unit is used for controlling the insulating hollow-out part to move through rotation so as to move the sliding part to the target position, wherein when the insulating hollow-out part rotates under the drive of the wind sweeping motor, the sliding part moves in the sliding groove after being involved by the sliding groove and the insulating hollow-out part.
Example 4
According to an embodiment of the present invention, there is provided a power supply system for a motor home air conditioner, including the power switching system described in embodiment 1.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
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 units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. A power switching system, comprising:
a plurality of power inputs and power outputs;
the power supply switching device is used for disconnecting the first power supply input end from the first power supply output end and conducting the connection between the second power supply input end and the corresponding second power supply output end if the second power supply input end is detected to be connected with the first power supply under the condition that the first power supply input end and the corresponding first power supply output end are connected with the first power supply, wherein the second power supply input end is any power supply input end different from the first power supply input end;
the power switching device includes:
the power input end is arranged at the upper end of the shell, and the power output end is arranged at the lower end of the shell;
the plurality of groups of wires penetrate through the shell, each group of wires is connected with a pair of power input end and power output end, one wire in each group of wires is disconnected, and the two disconnected ends are respectively connected with two metal sheets which are not contacted;
The sliding groove is transversely arranged in the shell, and the two metal sheets are oppositely abutted against the inner wall of the sliding groove;
a sliding part which is allowed to slide in the sliding groove, and contacts with the two opposite metal sheets when the sliding part slides to a designated position, so that a power input end and a power output end corresponding to a wire connected with the two metal sheets are conducted;
and the sliding selection device is used for controlling the sliding part to slide in the sliding groove.
2. The system of claim 1, wherein the power input comprises: the power detection module is used for detecting whether the power input end is connected with a power supply or not, wherein the power detection module comprises:
the first resistor, the second resistor and a diode are sequentially connected in series between the live wire and the zero wire;
a detection power supply for supplying direct current;
the input end of the optical coupler is connected with the second resistor in parallel, the collector of the output end of the optical coupler is connected with the detection power supply through the third resistor, and the emitter of the output end of the optical coupler is grounded through the fourth resistor;
the detection pin is connected to the emitter of the output end of the optocoupler through a fifth resistor;
Under the condition that the power input end is connected with a power supply, the detection pin detects high level, and under the condition that the power input end is not connected with the power supply, the detection pin detects low level.
3. The system of claim 1, wherein the two metal sheets are arcuate metal sheets with opposing grooves and the sliding member is a metal ball.
4. A system according to claim 1 or 3, wherein the slide selection means comprises:
a wind sweeping motor;
the telescopic rod, one end of the telescopic rod is connected with the sliding part through the opening on the sliding groove, and the second end of the telescopic rod is connected with the wind sweeping motor;
the wind sweeping motor obtains a target position of a target metal sheet in the sliding groove, and controls the telescopic rod to move the sliding part to the target position through telescopic action, wherein the target metal sheet is two metal sheets connected with the second power input end and the corresponding lead of the second power output end.
5. The system of claim 1, wherein the slide selection device comprises:
A wind sweeping motor;
the anti-falling boss clamps the sliding part at the hollowed-out part to move up and down;
the wind sweeping motor obtains a target position of a target metal sheet in the sliding groove, and controls the insulating hollow-out part to rotate, the sliding part translates to the target position under the traction of the sliding groove and the insulating hollow-out part, and the target metal sheet is two metal sheets connected with the second power input end and the second power output end corresponding wires.
6. A control method of the power supply switching system according to any one of claims 1 to 5, characterized in that the power supply switching system includes a plurality of power supply input terminals and a power supply output terminal, the control method of the power supply switching system comprising:
detecting whether a second power input end is connected with a second power supply or not under the condition that a first power input end and a corresponding first power output end are connected with a first power supply, wherein the second power input end is any power input end different from the first power input end;
And under the condition that the second power input end is connected with the second power, disconnecting the connection between the first power input end and the first power output end, and conducting the connection between the second power input end and the corresponding second power output end.
7. The method of claim 6, wherein the wire between the power input and the corresponding power output has a break point, wherein the power switching system further comprises a sliding member that allows sliding between the break points via a sliding slot, wherein disconnecting the first power input from the first power output and conducting the connection between the second power input and the corresponding second power output when the second power input is connected to the second power source comprises:
obtaining a target position of a target metal sheet in the sliding groove, wherein the target metal sheet is two metal sheets connected with leads corresponding to the second power input end and the second power output end;
and controlling the sliding part to slide from the current position to the target position, wherein the first power input end is connected with the first power output end when the sliding part is at the current position, and the second power input end is connected with the second power output end when the sliding part is at the target position.
8. The method of claim 7, wherein the power switching system further comprises a wind sweep motor controlling the sliding member to slide from a current position to a target position, comprising:
the wind sweeping motor obtains the current position of the sliding part in the sliding groove;
the wind sweeping motor stretches and contracts through rotating and controlling a telescopic rod connected with the sliding component so as to move the sliding component to the target position; or (b)
The wind sweeping motor moves by controlling the insulating hollow part to move through rotation, so that the sliding part moves to the target position, wherein when the insulating hollow part rotates under the drive of the wind sweeping motor, the sliding part moves in the sliding groove after being pulled by the sliding groove and the insulating hollow part.
9. A control device of the power switching system according to any one of claims 1 to 5, characterized in that the power switching system includes a plurality of power input terminals and a plurality of power output terminals, the control device of the power switching system comprising:
the detection module is used for detecting whether a second power input end is connected with a second power supply or not under the condition that a first power input end and a corresponding first power output end are connected with the first power supply, wherein the second power input end is any power input end different from the first power input end;
And the control module is used for disconnecting the connection between the first power input end and the first power output end and conducting the connection between the second power input end and the corresponding second power output end under the condition that the second power input end is connected with the second power.
10. A car as a house air conditioner power supply system, characterized in that it comprises the power supply switching system according to any one of claims 1 to 5.
CN202011308815.8A 2020-11-19 2020-11-19 Power supply switching system, control method and device thereof and motor home air conditioner power supply system Active CN112467861B (en)

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CN101651359A (en) * 2009-09-10 2010-02-17 惠州Tcl移动通信有限公司 Power supply unit and power supply switching method of mobile terminal
CN203632350U (en) * 2013-12-18 2014-06-04 重庆物语科技有限公司 Power supply priority selection circuit
CN111900797A (en) * 2020-09-07 2020-11-06 珠海格力电器股份有限公司 Dual-power uninterrupted power supply circuit, control method and air conditioner

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Publication number Priority date Publication date Assignee Title
JP6922449B2 (en) * 2017-06-08 2021-08-18 富士電機株式会社 Power system and power supply

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101651359A (en) * 2009-09-10 2010-02-17 惠州Tcl移动通信有限公司 Power supply unit and power supply switching method of mobile terminal
CN203632350U (en) * 2013-12-18 2014-06-04 重庆物语科技有限公司 Power supply priority selection circuit
CN111900797A (en) * 2020-09-07 2020-11-06 珠海格力电器股份有限公司 Dual-power uninterrupted power supply circuit, control method and air conditioner

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