CN106340957A - Power supply circuit switching device and method and power supply system - Google Patents

Power supply circuit switching device and method and power supply system Download PDF

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Publication number
CN106340957A
CN106340957A CN201610983963.7A CN201610983963A CN106340957A CN 106340957 A CN106340957 A CN 106340957A CN 201610983963 A CN201610983963 A CN 201610983963A CN 106340957 A CN106340957 A CN 106340957A
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CN
China
Prior art keywords
power supply
peripheral hardware
supply unit
switching
switching circuit
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Granted
Application number
CN201610983963.7A
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Chinese (zh)
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CN106340957B (en
Inventor
王红娟
李运康
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Tide (suzhou) Financial Technology Service Co Ltd
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Tide (suzhou) Financial Technology Service Co Ltd
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Priority to CN201610983963.7A priority Critical patent/CN106340957B/en
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Classifications

    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads

Abstract

The invention provides a power supply circuit switching device and method and a power supply system. The power supply circuit switching device comprises a detection unit, a controller and a switching circuit; the detection unit detects a present electric quantity value of a first peripheral power supply device, and sends the present electric quantity value to the controller; the controller presets first and second thresholds; when it is determined that the first peripheral power supply device is in a power supply state and the present electric quantity value is lower than the first threshold, a first switching instruction is sent to the switching circuit; when it is determined that the first peripheral power supply device is not in the power supply state and the present electric quantity value reaches the second threshold, a second switching instruction is sent to the switching circuit; when receiving the first switching instruction, the switching circuit cuts off power supply of the first peripheral power supply device, and enables power supply of a second peripheral power supply device, and when receiving the second switching instruction, the switching circuit cuts off power supply of the second peripheral power supply device, and enables power supply of the first peripheral power supply device. Thus, automatic switching among power supply circuits is realized.

Description

A kind of power supply circuits switching device, electric power system and method
Technical field
The present invention relates to electronic information technical field, particularly to a kind of power supply circuits switching device, electric power system and side Method.
Background technology
With widely using of mobile electronic device such as mobile phone, panel computer, for convenience citizen market, supermarket, The public places such as hospital, station and airport can carry out emergent charging to mobile electronic device, therefore sets in various public places Put self-service charging terminal.
At present, self-service charging terminal is use generally using the voltage that voltage or the battery feed of mains supply offer provide Family provides charging voltage.When mains supply abnormal electrical power supply is stopped power supply, and self-service charging terminal quits work, need to manually start Storage battery power supply.When mains supply service restoration normal power supply, more manually stop storage battery power supply, restart mains supply Power supply.Therefore, existing mode cannot be realized automatically switching between power supply circuits.
Content of the invention
Embodiments provide a kind of power supply circuits switching device, electric power system and method, in order to realize powering Automatically switch between circuit.
In a first aspect, embodiments providing a kind of power supply circuits switching device, this power supply circuits switching device, point It is not connected with the first power supply unit of peripheral hardware and the second power supply unit of peripheral hardware, comprising: detector unit, controller and switching electricity Road；
Described detector unit, for detecting the voltage value of the first power supply unit of described peripheral hardware, and will detect Described voltage value is sent to described controller；
Described controller, for setting first threshold and Second Threshold；Whether judge the first power supply unit of described peripheral hardware It is in power supply state, if it is, when the described current electric quantity that described detector unit detects is less than described first threshold, sending out Send the first switching command to described switching circuit；Judge whether the first power supply unit of described peripheral hardware is in power supply state, if No, then when the described current electric quantity that described detector unit detects reaches described Second Threshold, send the second switching command to Described switching circuit；
Described switching circuit, for when receiving the first switching command that described controller sends, cutting off described peripheral hardware The first power supply unit power supply, and turn on the power supply of the second power supply unit of described peripheral hardware；Send out when receiving described controller During the second switching command sending, cut off the power supply of the second power supply unit of described peripheral hardware, and turn on the first power supply of described peripheral hardware The power supply of equipment.
Preferably, described switching circuit, comprising: mos manages；
The source electrode of described mos pipe is respectively connected with the using terminal of the first power supply unit of described peripheral hardware and peripheral hardware；
The drain electrode of described mos pipe is connected with the second power supply unit of described peripheral hardware, the grid of described mos pipe and described control Device is connected；
Described first switching command, comprising: " 0v " level signal；
Described second switching command, comprising: " 49v " level signal；
Described mos pipe, for when receiving " 0v " level signal in described first switching command, turning on described source electrode With described drain electrode；
Described mos pipe, described for when receiving " 49v " level signal in described second switching command, being not turned on Source electrode and described drain electrode.
Preferably, described switching circuit, further includes: relay；
Described relay, comprising: the first relay contact, the second relay contact and the 3rd relay contact；Wherein institute State the first relay contact to be connected with described peripheral hardware first power supply unit and described 3rd relay contact respectively, described second continues Appliance contact is connected with described peripheral hardware second power supply unit and described 3rd relay contact respectively, described 3rd relay contact It is connected with peripheral hardware using terminal；
Described relay, for when receiving the first switching command that described controller sends, described first relay Contact and described 3rd relay contact disconnection, described second relay contact and described 3rd relay contact closure, described 3rd relay contact using peripheral hardware the second power supply unit be peripheral hardware using terminal power；
Described relay, for when receiving the second switching command that described controller sends, described first relay Contact and described 3rd relay contact closure, described second relay contact is disconnected with described 3rd relay contact, described 3rd relay contact using peripheral hardware the first power supply unit be peripheral hardware using terminal power.
Preferably, further include: overvoltage protector；
Described overvoltage protector, one end is connected with described switching circuit, and the other end is connected with outside using terminal, is used for Setting voltage threshold value, the supply voltage of switching circuit transmission described in real-time monitoring, when the power supply determining described switching circuit transmission When voltage reaches described voltage threshold, stop receiving the supply voltage of described switching circuit transmission.
Preferably,
Further include: overcurrent protector；
Described overcurrent protector, one end is connected with described switching circuit, and the other end is connected with outside using terminal, is used for Setting electric current threshold value, the supply current of switching circuit transmission described in real-time monitoring, when the power supply determining described switching circuit transmission When electric current reaches described current threshold, stop receiving the supply current of described switching circuit transmission.
Preferably, described controller, comprising: the first computation subunit and the first instruction send subelement；Described first meter Operator unit, for receiving the described voltage value that described detector unit sends, and according to formula (1), calculates described current The corresponding currently practical charge value of charge value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a1For characterizing the first electricity correction coefficient；
Described first instruction sends subelement, for when described currently practical charge value is less than described first threshold, sending out Send the first switching command to described switching circuit.
Preferably,
Described controller, comprising: the second computation subunit and the second instruction send subelement；
Described second computation subunit, for receiving the described voltage value that described detector unit sends, and according to public affairs Formula (2), calculates the corresponding currently practical charge value of described voltage value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a2For characterizing the second electricity correction coefficient；
Described second instruction sends subelement, for when described currently practical charge value reaches described Second Threshold, sending out Send the second switching command to described switching circuit.
Preferably, further include: independent switch submodule；
Described independent switch module is connected with described controller, for controlling described controller to switch to exporting described first The switching of instruction and described second switching command is independently controlled.
Preferably, described controller includes: first controls contact and the second control contact；
Described first control contact is connected with described detector unit, according to the current electric quantity of described detector unit transmission, control Make described controller and export described first switching command or described second switching command；
Described second control contact is connected with described independent switch module, according to the open command of described independent switch module Or out code, control described controller to export described first switching command or described second switching command.
Second aspect, embodiments provides a kind of electric power system, and this electric power system includes: the first power supply unit, Second power supply unit, using terminal and the arbitrary described power supply circuits switching device of first aspect；
Described first power supply unit, when the described switching circuit in described power supply circuits switching device receives the first switching During instruction, stop the power supply to described using terminal；When the described switching circuit in described power supply circuits switching device receives During the second switching command, to the power supply of described using terminal；
Described second power supply unit, when the described switching circuit in described power supply circuits switching device receives the first switching During instruction, to the power supply of described using terminal；When the described switching circuit in described power supply circuits switching device receives second During switching command, stop the power supply to described using terminal；
Described using terminal, receives described first power supply unit or described second confession by described power supply circuits switching device The power supply that electric equipment provides.
Preferably,
Described first power supply unit, including any one in accumulator, solar power supply unit and powered by wind energy equipment；
Described second power supply unit, including any one in municipal power supply unit and generator powered equipment.
Preferably,
Described using terminal is automatic charging terminal.
The third aspect, embodiments provides a kind of power supply circuits changing method, this power supply circuits changing method bag Include:
Preset first threshold and Second Threshold；
The voltage value of the first power supply unit of detection peripheral hardware；
Judge whether the first power supply unit of described peripheral hardware is in power supply state, if it is, when described current electric quantity is low When described first threshold, cut off the power supply of the first power supply unit of described peripheral hardware, and turn on the second power supply of described peripheral hardware and set Standby power supply；
Judge whether the first power supply unit of described peripheral hardware is in power supply state, if it is not, then when described current electric quantity reaches During to described Second Threshold, cut off the power supply of the second power supply unit of described peripheral hardware, and turn on the first power supply of described peripheral hardware and set Standby power supply.
Embodiments provide a kind of power supply circuits switching device, electric power system and method, this power supply circuits switches Device includes detector unit, controller and switching circuit.Detector unit is used for detecting the current electricity of the first power supply unit of peripheral hardware Value, and the described voltage value detecting is sent to described controller, controller is used for judging the first power supply of peripheral hardware Whether equipment is in power supply state, if it is, when the current electric quantity that detector unit detects is less than the first threshold set in advance During value, send the first switching command to switching circuit, switching circuit sets according to the first power supply that the first switching command cuts off peripheral hardware Standby power supply, and turn on the power supply of the second power supply unit of peripheral hardware.Whether controller is located when the first power supply unit judging peripheral hardware In power supply state, if it is not, then when the current electric quantity that detector unit detects reaches described Second Threshold, sending the second switching Instruct to switching circuit, switching circuit cuts off the power supply of the second power supply unit of peripheral hardware according to the second switching command, and turn on outer If the first power supply unit power supply.It can be seen that, in scheme, the first power supply unit of peripheral hardware is respectively in power supply state or non-powered In the case of state, obtain the current electric quantity of peripheral hardware first power supply unit.And according to judging current electric quantity and threshold set in advance The relation of value, according to the relation of current electric quantity and threshold value set in advance, sends different switching commands to switching circuit, so that Switching circuit, according to different switching commands, realizes the switching between peripheral hardware first power supply unit and peripheral hardware second power supply unit, Therefore, this programme can realize the automatic switchover between power supply circuits.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are the present invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of structural representation of power supply circuits switching device that one embodiment of the invention provides；
Fig. 2 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Fig. 3 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Fig. 4 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Fig. 5 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Fig. 6 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Fig. 7 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Fig. 8 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Fig. 9 is a kind of structural representation of power supply circuits switching device that another embodiment of the present invention provides；
Figure 10 is a kind of structural representation of electric power system that one embodiment of the invention provides；
Figure 11 is a kind of structural representation of electric power system that another embodiment of the present invention provides；
Figure 12 is a kind of flow chart of power supply circuits changing method that another embodiment of the present invention provides.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is The a part of embodiment of the present invention, rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment being obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
As shown in figure 1, embodiments providing a kind of power supply circuits switching device, this power supply circuits switching device, It is connected with the first power supply unit of peripheral hardware and the second power supply unit of peripheral hardware respectively, comprising: detector unit 101, controller 102 and Switching circuit 103；
Described detector unit 101, for detecting the voltage value of the first power supply unit of described peripheral hardware, and will detect Described voltage value be sent to described controller 102；
Described controller 102, for setting first threshold and Second Threshold；The first power supply unit judging described peripheral hardware is No be in power supply state, if it is, when the described current electric quantity that described detector unit detects be less than described first threshold when, Send the first switching command to described switching circuit 103；Judge whether the first power supply unit of described peripheral hardware is in power supply state, If it is not, then when the described current electric quantity that described detector unit detects reaches described Second Threshold, sending the second switching and refer to Make to described switching circuit 103；
Described switching circuit 103, for when receiving the first switching command that described controller 102 sends, cutting off institute State the power supply of the first power supply unit of peripheral hardware, and turn on the power supply of the second power supply unit of described peripheral hardware；When receiving described control During the second switching command that device 102 processed sends, cut off the power supply of the second power supply unit of described peripheral hardware, and turn on described peripheral hardware The power supply of the first power supply unit.
According to above-described embodiment, it is used for by detector unit detecting the voltage value of the first power supply unit of peripheral hardware, and The described voltage value detecting is sent to described controller, whether controller is used for judging the first power supply unit of peripheral hardware It is in power supply state, if it is, when the current electric quantity that detector unit detects is less than first threshold set in advance, sending To switching circuit, switching circuit cuts off the power supply of the first power supply unit of peripheral hardware to first switching command according to the first switching command, And turn on the power supply of the second power supply unit of peripheral hardware.Whether controller is in power supply shape when the first power supply unit judging peripheral hardware State, if it is not, then when the current electric quantity that detector unit detects reaches described Second Threshold, sends the second switching command to cutting Change circuit, switching circuit cuts off the power supply of the second power supply unit of peripheral hardware according to the second switching command, and turns on the first of peripheral hardware The power supply of power supply unit.It can be seen that, in this programme, the first power supply unit of peripheral hardware is respectively in the feelings of power supply state or non-powered state Under condition, obtain the current electric quantity of peripheral hardware first power supply unit, and according to judging the relation of current electric quantity and threshold value set in advance, According to the relation of current electric quantity and threshold value set in advance, send different switching commands to switching circuit, so that switching circuit According to different switching commands, realize the switching between peripheral hardware first power supply unit and peripheral hardware second power supply unit, therefore, we Case can realize the automatic switchover between power supply circuits.
In an embodiment of the invention, as shown in Fig. 2 in order to realize the switching between power supply circuits, described switching is electric Road 103 can include mos pipe 201.
The source electrode s of described mos pipe 201 is respectively connected with the using terminal of the first power supply unit of described peripheral hardware and peripheral hardware；
The drain electrode d of described mos pipe 201 is connected with the second power supply unit of described peripheral hardware, the grid g of described mos pipe and institute State controller 102 to be connected；
Described first switching command, comprising: " 0v " level signal；
Described second switching command, comprising: " 49v " level signal；
Described mos pipe 201, for when receiving " 0v " level signal in described first switching command, conducting is described Source electrode s and described drain electrode d；
Described mos pipe 201, for when receiving " 49v " level signal in described second switching command, being not turned on institute State source electrode s and described drain electrode d.
The type of described mos pipe can determine according to specific business need.In addition, described first switching command corresponds to Level signal be low level signal, and corresponding numerical value can change according to specific business need.Described second switching refers to Make corresponding level signal be high level signal, and corresponding numerical value can also change according to specific business need.
When receiving " 0v " level signal in the first switching command when mos pipe, conducting mos pipe in described source electrode s with Described drain electrode d, thus cutting off the power supply of the first power supply unit of peripheral hardware, realizes the power supply of the second power supply unit of conducting peripheral hardware.
When receiving " 49v " level signal in the second switching command when mos pipe, it is not turned on the described source electrode s in mos pipe With described drain electrode d, thus cutting off the power supply of the second power supply unit of peripheral hardware, realize the confession of the first power supply unit of conducting peripheral hardware Electricity.
According to above-described embodiment, switching circuit includes mos pipe, and mos Gutron is crossed grid reception controller and sent not With the corresponding level signal of switching command, and made according to the corresponding level signal of different switching commands receiving and moving accordingly Make.When receiving " 0v " level signal in the first switching command, turn on the source electrode in mos pipe and drain electrode, thus cut-out is outer If the first power supply unit power supply, realize conducting peripheral hardware the second power supply unit power supply.When receiving the second switching command In " 49v " level signal when, be not turned on the source electrode in mos pipe and drain electrode, thus cutting off the confession of the second power supply unit of peripheral hardware Electricity, realizes the power supply of the first power supply unit of conducting peripheral hardware.It is thereby achieved that the automatic switchover of different power supply circuits.
In an embodiment of the invention, as shown in figure 3, in order to realize the switching between power supply circuits, described switching is electric Road 103 may further include relay 301.
Described relay 301, comprising: the first relay contact, the second relay contact and the 3rd relay contact；Wherein Described first relay contact is connected with described peripheral hardware first power supply unit and described 3rd relay contact respectively, and described second Relay contact is connected with described peripheral hardware second power supply unit and described 3rd relay contact respectively, and described 3rd relay touches Point is connected with peripheral hardware using terminal；
Described relay 301, for when receiving the first switching command that described controller 102 sends, described first Relay contact is disconnected with described 3rd relay contact, and described second relay contact is closed with described 3rd relay contact Close, described 3rd relay contact using peripheral hardware the second power supply unit be peripheral hardware using terminal power；
Described relay 301, for when receiving the second switching command that described controller 102 sends, described first Relay contact and described 3rd relay contact closure, described second relay contact is broken with described 3rd relay contact Open, described 3rd relay contact using peripheral hardware the first power supply unit be peripheral hardware using terminal power.
The type of described relay can determine according to specific business need, such as can select electromagnetic relay.
According to above-described embodiment, switching circuit includes relay, the different switchings that relay sends according to controller The different relay contact of instruction on or off.When receiving the first switching command, the first relay contact continues with the 3rd Appliance contact disconnects, and the second relay contact and the 3rd relay contact closure, and the second power supply unit using peripheral hardware is The using terminal of peripheral hardware is powered.When receiving the second switching command, the first relay contact and described 3rd relay contact Closure, the second relay contact and the 3rd relay contact disconnect, and the first power supply unit using peripheral hardware is peripheral hardware using eventually End power supply.It is thereby achieved that the automatic switchover of different power supply circuits.
In an embodiment of the invention, as shown in figure 4, for the second confession in the first power supply unit of peripheral hardware or peripheral hardware In the case that the supply voltage that electric equipment provides is in exception, the using terminal of protection peripheral hardware, described power supply circuits switching device Overvoltage protector 401 can be included.
Described overvoltage protector 401, one end is connected with described switching circuit 103, the using terminal phase of the other end and outside Even, for setting voltage threshold value, the supply voltage of switching circuit transmission described in real-time monitoring, when determination described switching circuit transmission Supply voltage when reaching described voltage threshold, stop receiving the supply voltage of described switching circuit transmission.
Described overvoltage protector can determine according to specific business need, such as can select the excessively electric of gapless structure Pressure protector.
Described voltage threshold can include first voltage threshold value and second voltage threshold value.When switching circuit described in real-time monitoring When the supply voltage of transmission reaches first voltage threshold value, stop receiving the supply voltage of described switching circuit transmission, outer to protect The using terminal in portion avoids damaging.When the supply voltage of switching circuit transmission described in real-time monitoring reaches second voltage threshold value, Described overvoltage protector starts voltage stabilizing, makes the using terminal steady operation of outside.When switching circuit transmission described in real-time monitoring When supply voltage is less than second voltage threshold value, stop receiving the supply voltage of described switching circuit transmission, to protect making of outside Avoid damaging with terminal.
According to above-described embodiment, power supply circuits switching device may further include overvoltage protector, and real-time monitoring switches The supply voltage of circuit transmission, when the supply voltage determining switching circuit transmission reaches voltage threshold set in advance, stops Receive the supply voltage of switching circuit transmission, therefore, in the first power supply unit of switching circuit peripheral hardware or the second power supply of peripheral hardware In the case that the supply voltage that equipment provides is in exception, the using terminal of protection peripheral hardware, it is to avoid the using terminal of peripheral hardware occurs Damage.
In an embodiment of the invention, as shown in figure 5, for the second confession in the first power supply unit of peripheral hardware or peripheral hardware In the case that the supply current that electric equipment provides is in exception, the using terminal of protection peripheral hardware, described power supply circuits switching device Overcurrent protector 501 can be included.
Described overcurrent protector 501, one end is connected with described switching circuit 103, the using terminal phase of the other end and outside Even, for setting electric current threshold value, the supply current of switching circuit 103 transmission described in real-time monitoring, when the described switching circuit of determination When the supply current of 103 transmission reaches described current threshold, stop receiving the supply current of described switching circuit 103 transmission.
Described overcurrent protector can determine according to specific business need, such as can select current-limiting type overcurrent protection Device.
Described current threshold can determine according to specific business need, and described overcurrent protector is used for real-time monitoring and switches The supply current of circuit transmission, when the supply current determining switching circuit transmission reaches current threshold, stops cutting described in reception Change the supply current of circuit transmission.In order to avoid electric current causes to damage to the using terminal of peripheral hardware after exceeding current threshold.
According to above-described embodiment, power supply circuits switching device may further include overcurrent protector, and real-time monitoring switches The supply current of circuit transmission, when the supply current determining switching circuit transmission reaches current threshold set in advance, stops Receive the supply current of switching circuit transmission.Therefore, receive the first power supply unit of peripheral hardware or the second of peripheral hardware in switching circuit In the case that the supply current that power supply unit provides is in exception, the using terminal of protection peripheral hardware, it is to avoid the using terminal of peripheral hardware Occur damaging.
In an embodiment of the invention, as shown in fig. 6, described controller 102 may include that the first computation subunit 601 and first instruct transmission subelement 602.
Described first computation subunit 601, for receiving the described voltage value that described detector unit 101 sends, and According to formula (1), calculate the corresponding currently practical charge value of described voltage value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a1For characterizing the first electricity correction coefficient；
Described first instruction send subelement 602, for when described currently practical charge value be less than described first threshold when, Send the first switching command to described switching circuit 103.
Be converted to heat energy, or the loss of other forms because the first power supply unit may have electric energy.It is thus desirable to it is right The described voltage value that described detector unit sends is corrected calculating accordingly according to formula (1), described current to obtain The corresponding actual charge value of circuit values.
The electric quantity loss factor in formula (1)With the first electricity correction coefficient a1Can according to specific business need Lai Determine specific numerical value.According to the numerical value determining and the voltage value receiving, calculate voltage value using formula (1) Corresponding currently practical charge value, and the currently practical charge value obtaining is compared with first threshold, currently real when determining When border charge value is less than first threshold set in advance, send the first switching command to switching circuit, so that switching circuit cut-out The power supply of the first power supply unit of described peripheral hardware, and turn on the power supply of the second power supply unit of described peripheral hardware.
According to above-described embodiment, controller can include the first computation subunit and first instruction send subelement, first Computation subunit utilizes computing formula according to voltage value, calculates the corresponding currently practical charge value of voltage value；First Instruction sends subelement, when currently practical charge value is less than first threshold, sends the first switching command to described switching circuit. Due to using the relation of currently practical charge value and first threshold, will not thus without the transmission causing the first switching command Postpone.
In an embodiment of the invention, as shown in fig. 7, described controller may include that the second computation subunit 701 He Second instruction sends subelement 702.
Described second computation subunit 701, for receiving the described voltage value that described detector unit 101 sends, and According to formula (2), calculate the corresponding currently practical charge value of described voltage value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a2For characterizing the second electricity correction coefficient；
Described second instruction sends subelement 702, for when described currently practical charge value reaches described Second Threshold, Send the second switching command to described switching circuit 103.
The electric quantity loss factor in formula (2)With the first electricity correction coefficient a1Can according to specific business need Lai Determine specific numerical value.According to the numerical value determining and the voltage value receiving, calculate voltage value using formula (2) Corresponding currently practical charge value, and the currently practical charge value obtaining is compared with Second Threshold, currently real when determining When border charge value reaches Second Threshold set in advance, send the second switching command to switching circuit, so that switching circuit conducting The power supply of the first power supply unit of described peripheral hardware, and cut off the power supply of the second power supply unit of described peripheral hardware.
According to above-described embodiment, controller can include the second computation subunit and second instruction send subelement, second Computation subunit utilizes computing formula according to voltage value, calculates the corresponding currently practical charge value of voltage value；Second Instruction sends subelement, when currently practical charge value reaches Second Threshold, sends the second switching command to described switching circuit. Due to using the relation of currently practical charge value and Second Threshold, will not thus without the transmission causing the second switching command Postpone.
In an embodiment of the invention, as shown in figure 8, described power supply circuits switching device may further include independence Switch module 801.
Described independent switch module 801 is connected with described controller 102, for controlling described controller 102 to output institute State the first switching command and the switching of described second switching command is independently controlled.
When being in power supply state in the first power supply unit of described peripheral hardware, then detect when described detector unit described in Current electric quantity is not below during described first threshold it is necessary to send the first switching command to described switching circuit.When described outer If the first power supply unit when being not in power supply state, then when the described current electric quantity that described detector unit detects is not up to institute State during Second Threshold it is necessary to send the second switching command to described switching circuit.At this moment it is accomplished by using independent switch module To send the first switching command or send the second switching command carry out independent control to described switching circuit.
According to above-described embodiment, by independent switch module, carry out controller described in independent control and export the first switching command With the second switching command switching it is ensured that the first switching command or the second switching command are controlled according to specific business need Output, flexible operation.
In an embodiment of the invention, controlled described in independent control as shown in figure 9, working as by independent switch module 801 Device 102 processed exports the first switching command or the switching of the second switching command, then be accomplished by arranging two in described controller 102 Control contact i.e.: first controls contact 901 and the second control contact 902.
Described first control contact 901 was connected with described detector unit 101, according to working as of described detector unit 101 transmission Front electricity, controls described controller 102 to export described first switching command or described second switching command；
Described second control contact 902 is connected with described independent switch module 801, according to described independent switch module 801 Open command or out code, control described controller 102 export described first switching command or described second switching command.
Do not obscure to ensure that described controller exports corresponding level signal, then described controller includes: the first control Contact processed and the second control contact, two control contact to be connected with described detector unit and with described independent switch module respectively.
According to above-described embodiment, controller includes two control contacts, and wherein first controls contact and detector unit phase Even, the second control contact is connected with independent switch module, to control controller to export the first switching command or the second switching respectively Instruction, because two control contact to be two independent contacts, and is to be connected with corresponding element respectively, therefore can ensure that Controller is not affect mutually when work accordingly receiving detector unit or independent switch module.
As shown in Figure 10, embodiments provide a kind of electric power system, this electric power system includes: the first power supply unit 1001st, the second power supply unit 1002, using terminal 1003 and described power supply circuits switching device 1004；
Described first power supply unit 1001, when the described switching circuit in described power supply circuits switching device 1004 receives During the first switching command, stop the power supply to described using terminal 1003；Institute in described power supply circuits switching device 1004 When stating switching circuit and receiving the second switching command, to the power supply of described using terminal 1003；
Described second power supply unit 1002, when the described switching circuit in described power supply circuits switching device 1004 receives During the first switching command, to the power supply of described using terminal 1003；Cut described in described power supply circuits switching device 1003 When changing circuit and receiving the second switching command, stop the power supply to described using terminal 1003；
Described using terminal 1003, receives described first power supply unit 1001 by described power supply circuits switching device 1004 Or the power supply that described second power supply unit 1002 provides.
According to above-described embodiment, electric power system includes the first power supply unit, the second power supply unit, using terminal and power supply electricity Circuit switching device, realizes being using terminal between the first power supply unit and the second power supply unit using power supply circuits switching device The switching of power supply.
In an embodiment of the invention, described first power supply unit 1001 can include accumulator, solar powered set Any one in standby and powered by wind energy equipment；
Described second power supply unit 1002, can include any one in municipal power supply unit and generator powered equipment Kind；
In an embodiment of the invention, described using terminal 1003 is automatic charging terminal.
Below the first power supply unit is included as solar power supply unit with electric power system, the second power supply unit supplies for civil power Electric equipment, as a example using terminal is automatic charging terminal and power supply circuits switching device, to power supply provided in an embodiment of the present invention System illustrates, as shown in figure 11, this electric power system, may include that
Solar power supply unit 1101, mains-supplied equipment 1102, power supply circuits switching device 1103 and automatic charging are eventually End 1104；
Described power supply circuits switching device 1103 includes: detector unit 11031, controller 11032, switching circuit 11033rd, overvoltage protector 11034, overcurrent protector 11035, independent switch module 11036.Wherein said controller 11032 wraps Include: the first computation subunit 110321, the second computation subunit 110322, first instruct and send subelement 110323, second finger Order sends subelement 110324, first and controls contact 110325 and the second control contact 110326.Described switching circuit 11033 is wrapped Include mos pipe 110331.
Solar power supply unit 1101 is connected with the described detector unit 11031 in described power supply circuits switching device；
In the present embodiment, solar power supply unit can include at least one solar panel, at least one battery, Protection circuit module；In at least one solar panel described, each solar panel is used for receiving outside input Solar energy, and described solar energy is converted to electric energy, and described electric energy is transmitted at least one battery described；Described at least In one battery, each battery is used for receiving the described electric energy of described solar panel transmission, and stores；Described protection electricity Road module, for setting the 3rd threshold value and the 4th threshold value, the current electric quantity in each battery described in detection, described in detecting When the described current electric quantity of target battery is less than described three threshold value, the described target battery of triggering receives described solar panel The described electric energy of transmission；When the described current electric quantity described target battery is detected reaches described four threshold value, triggering is described Target battery stops receiving the described electric energy of described solar panel transmission.
In addition the solar power supply unit in this enforcement can also be replaced with other power supply units, and such as powered by wind energy sets Standby, powered by wind energy equipment may include that at least one windmill, at least one battery, protection circuit module；At least one wind described Che Zhong, each windmill is used for receiving the wind energy of outside input, and described wind energy is converted to electric energy, and described electric energy is transmitted To at least one battery described；In at least one battery described, each battery is used for receiving the described of described windmill transmission Electric energy, and store；Described protection circuit module, for setting the 5th threshold value and the 6th threshold value, in detection each battery described Current electric quantity, when detect described target battery described current electric quantity be less than described five threshold value when, trigger described target The described electric energy of windmill transmission described in battery receptacle；When the described current electric quantity described target battery is detected reaches the described 6th During threshold value, the described target battery of triggering stops receiving the described electric energy of described windmill transmission.
Detector unit 11031 in described power supply circuits switching device 1103, for detecting solar power supply unit 1101 In battery voltage value, and the described voltage value detecting is sent to described controller 11032.
Described controller 11032, for setting first threshold and Second Threshold.The numerical value of first threshold and Second Threshold can To be determined according to specific business need.Described controller 11032 receives the voltage value that detector unit 11031 sends, and Judge whether solar power supply unit 1101 is in power supply state, the process that this judges can be detected by controller 11032 Whether solar power supply unit 1101 has electric current to export, and when there being electric current output, that is, determines that solar power supply unit 1101 is in Power supply state, when not having electric current output, that is, determines that solar power supply unit 1101 is not in power supply state.
Described controller 11032 when determining that solar power supply unit 1101 is in power supply state, then utilizes the first calculating Subelement 110321 calculates the corresponding currently practical electricity of voltage value according to the voltage value receiving according to formula (1) Value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a1For characterizing the first electricity correction coefficient；Loss The factorWith the first electricity correction coefficient a1Specific numerical value can be determined according to specific business need.Calculated using formula (1) Obtain current actual charge value, and send subelement 110323 by the currently practical charge value obtaining and the using the first instruction One threshold value compares, and when determining that current actual charge value is less than first threshold, sends the first switching command to described switching electricity Mos pipe 110331 in road 11033.
The source electrode of described mos pipe 110331 and the using terminal of solar power supply unit 1101 and peripheral hardware are respectively connected with；Institute The drain electrode stating mos pipe 110331 is connected with mains-supplied equipment 1102, the grid of described mos pipe 110331 and described controller 11032 are connected；
Described mos pipe 110331, when receiving " 0v " level signal in described first switching command, turns on described source Pole and described drain electrode；Cut off the power supply of described solar power supply unit 1101, and turn on the confession of described mains-supplied equipment 1102 Electricity.If do not adopt mos to manage, it is possible to use relay herein；Described relay, receives described controller transmission for working as The first switching command when, described first relay contact with described 3rd relay contact disconnect, described second relay touch Point and described 3rd relay contact closure, described 3rd relay contact is making of peripheral hardware using the second power supply unit of peripheral hardware Powered with terminal.
Described controller 11032 when determine solar power supply unit 1101 be not in power supply state when, then utilize second meter Operator unit 110322 calculates the corresponding currently practical electricity of voltage value according to the voltage value receiving according to formula (2) Value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a2For characterizing the second electricity correction coefficient；Loss The factorWith the first electricity correction coefficient a1Specific numerical value can be determined according to specific business need.Calculated using formula (2) Obtain current actual charge value, and send subelement 110324 by the currently practical charge value obtaining and the using the second instruction Two threshold values compare, and when determining that current actual charge value reaches Second Threshold, send the second switching command to described switching electricity Mos pipe 110331 in road 11033.
Described mos manages when receiving " 49v " level signal in described second switching command, be not turned on described source electrode and Described drain electrode.Cut off the power supply of described mains-supplied equipment, and turn on the power supply of described solar power supply unit.If herein not Using mos pipe, it is possible to use relay；Described relay, for referring to when the second switching receiving described controller transmission When making, described first relay contact and described 3rd relay contact closure, described second relay contact and the described 3rd Relay contact disconnect, described 3rd relay contact using peripheral hardware the first power supply unit be peripheral hardware using terminal power.
Described overvoltage protector 11034, one end is connected with described switching circuit 11033, the other end and automatic charging terminal 1104 are connected, and for setting voltage threshold value, the supply voltage of switching circuit transmission described in real-time monitoring, when determination described switching electricity When the supply voltage of road 11033 transmission reaches described voltage threshold, stop receiving the power supply electricity of described switching circuit 11033 transmission Pressure.Described overvoltage protector can determine according to specific business need, and the overvoltage of gapless structure such as can be selected to protect Shield device.Described voltage threshold can include first voltage threshold value and second voltage threshold value.When switching circuit described in real-time monitoring passes When defeated supply voltage reaches first voltage threshold value, stop receiving the supply voltage of described switching circuit transmission, to protect outside Using terminal avoid damage.When the supply voltage of switching circuit transmission described in real-time monitoring reaches second voltage threshold value, institute State overvoltage protector and start voltage stabilizing, make the using terminal steady operation of outside.Confession when switching circuit transmission described in real-time monitoring When piezoelectric voltage is less than second voltage threshold value, stop receiving the supply voltage of described switching circuit transmission, to protect the use of outside Terminal avoids damaging.
Described overcurrent protector 11035, one end is connected with described switching circuit 11033, the other end and automatic charging terminal 1104 are connected, and for setting electric current threshold value, described in real-time monitoring, the supply current of switching circuit 11033 transmission, described when determining When the supply current of switching circuit 11033 transmission reaches described current threshold, stop receiving described switching circuit 11033 transmission Supply current.Described overcurrent protector can determine according to specific business need, such as can select current-limiting type overcurrent protection Device.Described current threshold can determine according to specific business need, and described overcurrent protector is used for real-time monitoring switching circuit The supply current of transmission, when the supply current determining switching circuit transmission reaches current threshold, stops receiving described switching electricity The supply current of road transmission.In order to avoid electric current causes to damage to the using terminal of peripheral hardware after exceeding current threshold.
Described overcurrent protector can be placed on upstream or the downstream of described overvoltage protector according to specific business need In circuit, overcurrent protector 11035 is placed in the upstream circuitry of overvoltage protector 11034 in the present embodiment.
Described independent switch module 11036 is connected with described controller 11032, for controlling described controller 11032 right Export described first switching command and the switching of described second switching command is independently controlled.When solar powered setting described When being in power supply state for 1101, then when the described current electric quantity that described detector unit 11031 detects is not below described first It is necessary to send the first switching command to described switching circuit 11033 during threshold value.When in described solar power supply unit 1101 not When being in power supply state, then when the described current electric quantity that described detector unit 11031 detects is not up to described Second Threshold, It is accomplished by sending the second switching command to described switching circuit 11033.At this moment be accomplished by using independent switch module 11036 to send out The first switching command or transmission the second switching command is sent to carry out independent control to described switching circuit 11033.
Described controller 11032 includes: first controls contact 110325 and the second control contact 110326；
Described first control contact 110325 is connected with described detector unit 11031, is passed according to described detector unit 11031 The current electric quantity passed, controls described controller 11032 to export described first switching command or described second switching command；
Described second control contact 110326 is connected with described independent switch module 11036, according to described independent switch mould The open command of block 11036 or out code, control described controller 11032 to export described first switching command or described second Switching command.
In addition the particular type of described automatic charging terminal 1104 can determine according to specific business need, such as permissible From portable class, Table top type, the type such as vertical self-service charging terminal.In this electric power system, solar power supply unit, city Electric power supply unit and power supply circuits switching device can be placed in self-service charging terminal it is also possible to prevent in self-service charging terminal Outside.If being placed on the outside of self-service charging terminal, then the distance apart from self-service charging terminal can be according to specific industry Business requires to determine.This electric power system can be arranged on the fields such as bank, hospital, airport, cell, market according to specific business need Institute, increases portable kind equipment, such as mobile phone, the endurance of panel computer etc..
The contents such as the information exchange between each element in said apparatus and system, implementation procedure, due to side of the present invention Method embodiment is based on same design, and particular content can be found in the narration in the inventive method embodiment, and here is omitted.
As shown in figure 12, embodiments provide a kind of power supply circuits changing method, the method comprises the steps:
Step 1201: preset first threshold and Second Threshold；
Step 1202: the voltage value of the first power supply unit of detection peripheral hardware；
Step 1203: judge whether the first power supply unit of described peripheral hardware is in power supply state, if it is, execution step 1204；Otherwise, execution step 1202；
Can go whether the first power supply unit monitoring peripheral hardware has electricity to export by controller, if having monitored electricity Output, determines that the first power supply unit of peripheral hardware is in power supply state.If monitoring do not have electricity to export, determine that outer If the first power supply unit be not in power supply state.
Step 1204: judge whether described voltage value is less than described first threshold, if it is, execution step 1205； Otherwise, execution step 1202；
First threshold can determine specific numerical value according to specific business need.Formula is utilized according to voltage value (1), calculate the corresponding currently practical charge value of voltage value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a1For characterizing the first electricity correction coefficient；Loss The factorWith the first electricity correction coefficient a1Specific numerical value can be determined according to specific business need.Calculated using formula (1) Obtain current actual charge value, and judge that the currently practical charge value obtaining is compared with first threshold, when the current reality of determination When border charge value is less than first threshold, execution step 1205；Otherwise, execution step 1202.
Step 1205: cut off the power supply of the first power supply unit of described peripheral hardware, and turn on the second power supply of described peripheral hardware setting Standby power supply；
The power supply of the first power supply unit of cut-out peripheral hardware, and it is permissible to turn on the process of the power supply of the second power supply unit of peripheral hardware Completed by mos pipe, mos pipe turns on source electrode and drain electrode；The power supply of the first power supply unit of cut-out peripheral hardware, and turn on the of peripheral hardware The power supply of two power supply units.If do not adopt mos to manage, it is possible to use relay herein；Relay executes the first relay Contact and the 3rd relay contact disconnection, the second relay contact and the 3rd relay contact closure, the 3rd relay contact profit Powered with the using terminal that the second power supply unit of peripheral hardware is peripheral hardware.
Step 1206: judge whether described current electric quantity reaches described Second Threshold, if it is, execution step 1207；No Then, execution step 1203；
Described Second Threshold can determine specific numerical value according to specific business need.According to described voltage value profit With formula (2), calculate the corresponding currently practical charge value of voltage value；
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing State voltage value；DescribedFor characterizing the loss factor of electricity；Described a2For characterizing the second electricity correction coefficient；Loss The factorWith the first electricity correction coefficient a1Specific numerical value can be determined according to specific business need.Using formula (2) meter Calculate and obtain current actual charge value, and the currently practical charge value obtaining is compared with Second Threshold, when the current reality of determination When border charge value reaches Second Threshold, execution step 1207；Otherwise, execution step 1203.
Step 1207: cut off the power supply of the second power supply unit of described peripheral hardware, and turn on the first power supply of described peripheral hardware setting Standby power supply.
The power supply of the second power supply unit of cut-out peripheral hardware, and it is permissible to turn on the process of the power supply of the first power supply unit of peripheral hardware Realized by mos pipe.Mos pipe is not turned on source electrode and drain electrode.The power supply of the second power supply unit of cut-out peripheral hardware, and turn on peripheral hardware The power supply of the first power supply unit.If do not adopt mos to manage, it is possible to use relay herein；In described relay first is continued Appliance contact and the 3rd relay contact closure, the second relay contact and the 3rd relay contact disconnect, and the 3rd relay touches Put the using terminal that the first power supply unit using peripheral hardware is peripheral hardware to power.
According to above-described embodiment, by detecting the voltage value of the first power supply unit of peripheral hardware；Judge described peripheral hardware Whether the first power supply unit is in power supply state, if it is, when the described current electric quantity detecting is less than described first threshold When, cut off the power supply of the first power supply unit of described peripheral hardware, and turn on the power supply of the second power supply unit of described peripheral hardware；Judge institute Whether the first power supply unit stating peripheral hardware is in power supply state, if not, when described current electric quantity reaches described Second Threshold, cutting The power supply of the second power supply unit of disconnected described peripheral hardware, and turn on the power supply of the first power supply unit of described peripheral hardware.It can be seen that, this programme In, the first power supply unit of peripheral hardware, respectively in the case of power supply state or non-powered state, obtains peripheral hardware first power supply unit Current electric quantity, and according to judging the relation of current electric quantity and threshold value set in advance, according to current electric quantity with set in advance The relation of threshold value, sends different switching commands, according to different switching commands, realizes peripheral hardware first power supply unit and peripheral hardware the Switching between two power supply units, therefore, this programme can realize the automatic switchover between power supply circuits.
In sum, each embodiment of the present invention at least can realize following beneficial effect:
1st, in embodiments of the present invention, this power supply circuits switching device includes detector unit, controller and switching circuit.Inspection Survey unit to be used for detecting the voltage value of the first power supply unit of peripheral hardware, and the described voltage value detecting is sent to Described controller, controller is used for judging whether the first power supply unit of peripheral hardware is in power supply state, if it is, when detection is single When the current electric quantity that unit detects is less than first threshold set in advance, send the first switching command to switching circuit, switching electricity Road cuts off the power supply of the first power supply unit of peripheral hardware according to the first switching command, and turns on the confession of the second power supply unit of peripheral hardware Electricity.Whether controller be in power supply state when the first power supply unit that judge peripheral hardware, if it is not, then when detector unit detects When current electric quantity reaches described Second Threshold, send the second switching command to switching circuit, switching circuit refers to according to the second switching The power supply of the second power supply unit of order cut-out peripheral hardware, and turn on the power supply of the first power supply unit of peripheral hardware.It can be seen that, in scheme, First power supply unit of peripheral hardware, respectively in the case of power supply state or non-powered state, obtains working as of peripheral hardware first power supply unit Front electricity.And according to judging the relation of current electric quantity and threshold value set in advance, according to current electric quantity and threshold value set in advance Relation, send different switching commands to switching circuit, so that switching circuit is according to different switching commands, realize peripheral hardware the Switching between one power supply unit and peripheral hardware second power supply unit, therefore, this programme can be realized automatic between power supply circuits Switching.
2nd, in embodiments of the present invention, switching circuit includes mos pipe, and mos Gutron is crossed grid reception controller and sent The corresponding level signal of different switching commands, and according to receive the corresponding level signal of different switching commands make accordingly Action.When receiving " 0v " level signal in the first switching command, turn on the source electrode in mos pipe and drain electrode, thus cutting off The power supply of the first power supply unit of peripheral hardware, realizes the power supply of the second power supply unit of conducting peripheral hardware.Refer to when receiving the second switching During " 49v " level signal in order, it is not turned on the source electrode in mos pipe and drain electrode, thus cut off the second power supply unit of peripheral hardware Power supply, realizes the power supply of the first power supply unit of conducting peripheral hardware.It is thereby achieved that the automatic switchover of different power supply circuits.
3rd, in embodiments of the present invention, switching circuit includes relay, the difference that relay sends according to controller The different relay contact of switching command on or off.When receiving the first switching command, the first relay contact and Three relay contacts disconnect, and the second relay contact and the 3rd relay contact closure, and the second power supply using peripheral hardware sets The standby using terminal for peripheral hardware is powered.When receiving the second switching command, the first relay contact and described 3rd relay The closing of contact, the second relay contact and the 3rd relay contact disconnect, and the first power supply unit using peripheral hardware is making of peripheral hardware Powered with terminal.It is thereby achieved that the automatic switchover of different power supply circuits.
4th, in embodiments of the present invention, power supply circuits switching device may further include overvoltage protector, real-time monitoring The supply voltage of switching circuit transmission, when the supply voltage determining switching circuit transmission reaches voltage threshold set in advance, Stop receiving the supply voltage of switching circuit transmission, therefore, the second of the first power supply unit of switching circuit peripheral hardware or peripheral hardware In the case that the supply voltage that power supply unit provides is in exception, the using terminal of protection peripheral hardware, it is to avoid the using terminal of peripheral hardware Occur damaging.
5th, in embodiments of the present invention, power supply circuits switching device may further include overcurrent protector, real-time monitoring The supply current of switching circuit transmission, when the supply current determining switching circuit transmission reaches current threshold set in advance, Stop receiving the supply current of switching circuit transmission.Therefore, the first power supply unit of peripheral hardware or peripheral hardware are received in switching circuit In the case that the supply current that second power supply unit provides is in exception, the using terminal of protection peripheral hardware, it is to avoid the use of peripheral hardware Damaging occurs in terminal.
6th, in embodiments of the present invention, controller can include the first computation subunit and the first instruction sends subelement, First computation subunit utilizes computing formula according to voltage value, calculates the corresponding currently practical charge value of voltage value； First instruction sends subelement, when currently practical charge value is less than first threshold, sends the first switching command to described switching Circuit.Due to using the relation of currently practical charge value and first threshold, thus without cause the first switching command send out Send and will not postpone.
7th, in embodiments of the present invention, controller can include the second computation subunit and the second instruction sends subelement, Second computation subunit utilizes computing formula according to voltage value, calculates the corresponding currently practical charge value of voltage value； Second instruction sends subelement, when currently practical charge value reaches Second Threshold, sends the second switching command to described switching Circuit.Due to using the relation of currently practical charge value and Second Threshold, thus without cause the second switching command send out Send and will not postpone.
8th, in embodiments of the present invention, by independent switch module, carry out controller output first switching described in independent control Instruction and the switching of the second switching command it is ensured that control the first switching command or the second switching according to specific business need The output of instruction, flexible operation.
9th, in embodiments of the present invention, controller includes two control contacts, and wherein first controls contact single with detection Unit is connected, and the second control contact is connected with independent switch module, to control controller output the first switching command or second respectively Switching command, because two control contact to be two independent contacts, and is to be connected with corresponding element respectively, therefore permissible Ensure that controller is not affect mutually when work accordingly receiving detector unit or independent switch module.
10th, in embodiments of the present invention, electric power system include the first power supply unit, the second power supply unit, using terminal and Power supply circuits switching device, realizes between the first power supply unit and the second power supply unit being use using power supply circuits switching device The switching of the power supply of terminal.
11st, in embodiments of the present invention, by detecting the voltage value of the first power supply unit of peripheral hardware；Judge described outer If the first power supply unit whether be in power supply state, if it is, when the described current electric quantity that detect is less than described first During threshold value, cut off the power supply of the first power supply unit of described peripheral hardware, and turn on the power supply of the second power supply unit of described peripheral hardware；Sentence Whether the first power supply unit of disconnected described peripheral hardware is in power supply state, if not, described current electric quantity reaches described Second Threshold When, cut off the power supply of the second power supply unit of described peripheral hardware, and turn on the power supply of the first power supply unit of described peripheral hardware.It can be seen that, In this programme, the first power supply unit of peripheral hardware, respectively in the case of power supply state or non-powered state, obtains peripheral hardware first and supplies The current electric quantity of electric equipment, and according to judging the relation of current electric quantity and threshold value set in advance, according to current electric quantity with advance The relation of the threshold value setting, sends different switching commands, according to different switching commands, realize peripheral hardware first power supply unit and Switching between peripheral hardware second power supply unit, therefore, this programme can realize the automatic switchover between power supply circuits.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity Or operation is made a distinction with another entity or operation, and not necessarily requires or imply exist between these entities or operation Any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to non- The comprising of exclusiveness, so that including a series of process of key elements, method, article or equipment not only include those key elements, But also include other key elements being not expressly set out, or also include being consolidated by this process, method, article or equipment Some key elements.In the absence of more restrictions, the key element being limited by sentence " including ", does not arrange Remove and also there is other same factor in the process including described key element, method, article or equipment.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be passed through Completing, aforesaid program can be stored in the storage medium of embodied on computer readable the related hardware of programmed instruction, this program Upon execution, execute the step including said method embodiment；And aforesaid storage medium includes: rom, ram, magnetic disc or light Disk etc. is various can be with the medium of store program codes.
Finally it should be understood that the foregoing is only presently preferred embodiments of the present invention, it is merely to illustrate the skill of the present invention Art scheme, is not intended to limit protection scope of the present invention.All any modifications made within the spirit and principles in the present invention, Equivalent, improvement etc., are all contained in protection scope of the present invention.

Claims (10)

1. a kind of power supply circuits switching device is it is characterised in that supply with the first power supply unit of peripheral hardware and the second of peripheral hardware respectively Electric equipment is connected, comprising: detector unit, controller and switching circuit；
Described detector unit, for detecting the voltage value of the first power supply unit of described peripheral hardware, and described in detecting Voltage value is sent to described controller；
Described controller, for setting first threshold and Second Threshold；Judge whether the first power supply unit of described peripheral hardware is in Power supply state, if it is, when the described current electric quantity that described detector unit detects is less than described first threshold, send the One switching command gives described switching circuit；Judge whether the first power supply unit of described peripheral hardware is in power supply state, if it is not, then When the described current electric quantity that described detector unit detects reaches described Second Threshold, send the second switching command and cut to described Change circuit；
Described switching circuit, for when receiving the first switching command that described controller sends, cutting off the of described peripheral hardware The power supply of one power supply unit, and turn on the power supply of the second power supply unit of described peripheral hardware；When receiving what described controller sent During the second switching command, cut off the power supply of the second power supply unit of described peripheral hardware, and turn on the first power supply unit of described peripheral hardware Power supply.
2. power supply circuits switching device according to claim 1 is it is characterised in that described switching circuit, comprising: mos manages；
The source electrode of described mos pipe is respectively connected with the using terminal of the first power supply unit of described peripheral hardware and peripheral hardware；
The drain electrode of described mos pipe is connected with the second power supply unit of described peripheral hardware, the grid of described mos pipe and described controller phase Even；
Described first switching command, comprising: " 0v " level signal；
Described second switching command, comprising: " 49v " level signal；
Described mos pipe, for when receiving " 0v " level signal in described first switching command, turning on described source electrode and institute State drain electrode；
Described mos pipe, for when receiving " 49v " level signal in described second switching command, being not turned on described source electrode With described drain electrode.
3. power supply circuits switching device according to claim 1, it is characterised in that described switching circuit, further includes: Relay；
Described relay, comprising: the first relay contact, the second relay contact and the 3rd relay contact；Wherein said One relay contact is connected with described peripheral hardware first power supply unit and described 3rd relay contact respectively, described second relay Contact is connected with described peripheral hardware second power supply unit and described 3rd relay contact respectively, and described 3rd relay contact is with outward If using terminal is connected；
Described relay, for when receiving the first switching command that described controller sends, described first relay contact Disconnect with described 3rd relay contact, described second relay contact and described 3rd relay contact closure, the described 3rd Relay contact using peripheral hardware the second power supply unit be peripheral hardware using terminal power；
Described relay, for when receiving the second switching command that described controller sends, described first relay contact With described 3rd relay contact closure, described second relay contact with described 3rd relay contact disconnect, the described 3rd Relay contact using peripheral hardware the first power supply unit be peripheral hardware using terminal power.
4. the power supply circuits switching device according to Claims 2 or 3 is it is characterised in that further include: overvoltage protection Device；
Described overvoltage protector, one end is connected with described switching circuit, and the other end is connected with outside using terminal, for setting Voltage threshold, the supply voltage of switching circuit transmission described in real-time monitoring, when the supply voltage determining described switching circuit transmission When reaching described voltage threshold, stop receiving the supply voltage of described switching circuit transmission；
And/or,
Further include: overcurrent protector；
Described overcurrent protector, one end is connected with described switching circuit, and the other end is connected with outside using terminal, for setting Current threshold, the supply current of switching circuit transmission described in real-time monitoring, when the supply current determining described switching circuit transmission When reaching described current threshold, stop receiving the supply current of described switching circuit transmission.
5. power supply circuits switching device according to claim 1 is it is characterised in that described controller, comprising: the first calculating Subelement and the first instruction send subelement；
Described first computation subunit is for receiving the described voltage value that described detector unit sends and public according to first Formula, calculates the corresponding currently practical charge value of described voltage value；
Described first formula includes:
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing described working as Front charge value；DescribedFor characterizing the loss factor of electricity；Described a1For characterizing the first electricity correction coefficient；
Described first instruction sends subelement, for when described currently practical charge value is less than described first threshold, sending the One switching command gives described switching circuit；
And/or,
Described controller, comprising: the second computation subunit and the second instruction send subelement；
Described second computation subunit is for receiving the described voltage value that described detector unit sends and public according to second Formula, calculates the corresponding currently practical charge value of described voltage value；
Described second formula includes:
Wherein, described q1For characterizing the corresponding currently practical charge value of described voltage value；Described qiFor characterizing described working as Front charge value；DescribedFor characterizing the loss factor of electricity；Described a2For characterizing the second electricity correction coefficient；
Described second instruction sends subelement, for when described currently practical charge value reaches described Second Threshold, sends the Two switching commands give described switching circuit.
6. power supply circuits switching device according to claim 1 is it is characterised in that further include: independent switch module；
Described independent switch module is connected with described controller, for controlling described controller to described first switching command of output Switching with described second switching command is independently controlled.
7. power supply circuits switching device according to claim 6 is it is characterised in that described controller includes: the first control Contact and the second control contact；
Described first control contact is connected with described detector unit, according to the current electric quantity of described detector unit transmission, controls institute State controller and export described first switching command or described second switching command；
Described second control contact is connected with described independent switch module, the open command according to described independent switch module or pass Close instruction, control described controller to export described first switching command or described second switching command.
8. a kind of electric power system is it is characterised in that include: the first power supply unit, the second power supply unit, using terminal and right will Seek 1 to 7 arbitrary described power supply circuits switching device；
Described first power supply unit, when the described switching circuit in described power supply circuits switching device receives the first switching command When, stop the power supply to described using terminal；When the described switching circuit in described power supply circuits switching device receives second During switching command, to the power supply of described using terminal；
Described second power supply unit, when the described switching circuit in described power supply circuits switching device receives the first switching command When, to the power supply of described using terminal；When the described switching circuit in described power supply circuits switching device receives the second switching During instruction, stop the power supply to described using terminal；
Described using terminal, receives described first power supply unit by described power supply circuits switching device or described second power supply sets The standby power supply providing.
9. electric power system according to claim 8 it is characterised in that
Described first power supply unit, including any one in accumulator, solar power supply unit and powered by wind energy equipment；
Described second power supply unit, including any one in municipal power supply unit and generator powered equipment；
And/or,
Described using terminal is automatic charging terminal.
10. a kind of power supply circuits changing method, it is characterised in that presetting first threshold and Second Threshold, also includes:
The voltage value of the first power supply unit of detection peripheral hardware；
Judge whether the first power supply unit of described peripheral hardware is in power supply state, if it is, when described current electric quantity is less than institute When stating first threshold, the power supply of the first power supply unit of the described peripheral hardware of cut-out, and turn on the second power supply unit of described peripheral hardware Power supply；
Judge whether the first power supply unit of described peripheral hardware is in power supply state, if it is not, then when described current electric quantity reaches institute When stating Second Threshold, the power supply of the second power supply unit of the described peripheral hardware of cut-out, and turn on the first power supply unit of described peripheral hardware Power supply.
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