CN106532910A - Switching method, circuit and system - Google Patents
Switching method, circuit and system Download PDFInfo
- Publication number
- CN106532910A CN106532910A CN201611018360.XA CN201611018360A CN106532910A CN 106532910 A CN106532910 A CN 106532910A CN 201611018360 A CN201611018360 A CN 201611018360A CN 106532910 A CN106532910 A CN 106532910A
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- transmission line
- power
- power transmission
- switching circuit
- electric energy
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Classifications
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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
- 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
-
- 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
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention provides a switching method, a circuit and a system. In one aspect, a handover system provided in an embodiment of the present invention includes: the first end of the switching circuit is connected with a first power supply, and the first end of the switching circuit is also connected with a second power supply; and the power supply conversion circuit is connected with the second end of the switching circuit. In the embodiment of the invention, after one power supply stops outputting electric energy and the switching circuit switches the power supply, the switching circuit provides electric energy to the power supply conversion circuit through the other power supply, so that the electric energy can be continuously output from the switching circuit to the power supply conversion circuit, the power supply conversion circuit can further continuously obtain the electric energy and convert the electric energy, and then the converted electric energy is output, so that the battery energy storage system can continuously work.
Description
【Technical field】
The present invention relates to switching control technical field, more particularly to a kind of changing method, circuit and system.
【Background technology】
Include electronic control circuit and power-switching circuit in current battery energy storage system, power-switching circuit is to electricity
After the electric energy of source output is changed, by the electrical energy transportation electron control circuit after conversion, electronic control circuit is using conversion
Electric energy work afterwards, realizes the control to battery energy storage system.
After power outage, power-switching circuit cannot continue as the electric energy after electronic control circuit provides conversion,
Cause electronic control circuit obtain electric energy, so as to stop the control to battery energy storage system so that battery energy storage system without
Method works on, for example：Battery energy storage system stops externally providing electric energy.
In process of the present invention is realized, inventor has found that at least there are the following problems in prior art：
In the prior art, battery energy storage system only one of which power supply can be input into electric energy, after the power outage,
Power-switching circuit can not continue to output electric energy so that battery energy storage system cannot work on.
【The content of the invention】
In view of this, a kind of changing method, circuit and system are embodiments provided, can be realized when a power supply
After cannot powering, battery energy storage system remains able to obtain electric energy, it is ensured that battery energy storage system can continue to work.
In a first aspect, embodiments providing a kind of switched system, the battery including power-switching circuit is arranged on
In energy-storage system, the switched system includes：
Switching circuit, the first end of the switching circuit are connected with first power supply, the first end of the switching circuit
Also it is connected with the second source；
The power-switching circuit, the power-switching circuit are connected with the second end of the switching circuit.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the switching electricity
Road includes：
Power transmission line, the power transmission line include：First power transmission line, the second power transmission line, the 3rd power transmission line and the 4th power transmission line；Institute
The first end for stating the first power transmission line is connected with the positive pole of first power supply, the second end and the power supply of first power transmission line
The positive pole connection of change-over circuit；The first end of second power transmission line is connected with the negative pole of first power supply, and described second is defeated
Second end of electric wire is connected with the negative pole of the power-switching circuit；The first end and the second source of the 3rd power transmission line
Positive pole connection, the second end of the 3rd power transmission line is connected with the positive pole of the power-switching circuit；4th power transmission line
First end be connected with the positive pole of the second source, the second end of the 4th power transmission line and the power-switching circuit it is negative
Pole connects；
Coil, the two ends of the coil are connected with first power transmission line and second power transmission line respectively；
Normally closed switch, the two ends of the normally closed switch are connected with the 3rd power transmission line, and the 3rd power transmission line can
Turned on by the normally closed switch；
Armature, the armature are located between the coil and the normally closed switch, and are connected with the normally closed switch.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, described first is electric
Source and the second source are input into electric energy to the switching circuit respectively.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, described first is electric
Source is AC power, and the second source is dc source；Or,
First power supply is AC power, and the second source is AC power.
In embodiments of the present invention, switched system includes two power supplys, also, two power supplys are all connected with switching circuit,
The Switching power is also connected with power-switching circuit, wherein, switching circuit can play a part of power supply switching.When a power supply
After stopping output electric energy, switching circuit is switched to another power supply and continues as power-switching circuit offer electric energy, it is ensured that power supply
Change-over circuit can persistently carry out electric energy conversion, provide the electric energy after conversion to the circuit downstream of power-switching circuit, further
, as switching circuit is connected with two power supplys, therefore after a power supply stops output electric energy, switching circuit can be to power supply
Switch over, get the power supply of another power supply output, and the electric energy is exported to power-switching circuit, so Power convert
Circuit can also continue to obtain electric energy, and electric energy is changed, and then export the electric energy after conversion so that battery
Energy-storage system can continue to work.
Second aspect, embodiments provides a kind of switching circuit, is applied to any one of first aspect switching system
In system, the circuit includes：
Power transmission line, the power transmission line include：First power transmission line, the second power transmission line, the 3rd power transmission line and the 4th power transmission line；Institute
The first end for stating the first power transmission line is connected with the positive pole of first power supply, the second end and the power supply of first power transmission line
The positive pole connection of change-over circuit；The first end of second power transmission line is connected with the negative pole of first power supply, and described second is defeated
Second end of electric wire is connected with the negative pole of the power-switching circuit；The first end and the second source of the 3rd power transmission line
Positive pole connection, the second end of the 3rd power transmission line is connected with the positive pole of the power-switching circuit；4th power transmission line
First end be connected with the positive pole of the second source, the second end of the 4th power transmission line and the power-switching circuit it is negative
Pole connects；
Coil, the two ends of the coil are connected with first power transmission line and second power transmission line respectively；
Normally closed switch, the two ends of the normally closed switch are connected with the 3rd power transmission line, and the 3rd power transmission line can
Turned on by the normally closed switch；
Armature, the armature are located between the coil and the normally closed switch, and are connected with the normally closed switch.
In embodiments of the present invention, the first end of the first end of the first power transmission line and the second power transmission line all with the first power supply
Positive pole connects, and the second end of the first power transmission line and the second end of the second power transmission line are all connected with power-switching circuit, so as to ensure
First power supply and power-switching circuit are conductings, i.e. the first power supply can convey electric energy to power-switching circuit.3rd is defeated
The first end of the first end of electric wire and the 4th power transmission line is all connected with the positive pole of second source, the 3rd power transmission line and the 4th power transmission line
The second end be all connected with power-switching circuit, so as to ensure that second source and power-switching circuit be conducting, i.e., second
Power supply can convey electric energy to power-switching circuit.As coil is connected with the first power transmission line and the second power transmission line respectively,
During one power supply conveys electric energy to power-switching circuit, in coil, there is electric current to flow through, coil can produce galvanomagnetic-effect, due to
There is armature between coil and normally closed switch, and the armature is connected with normally closed switch, after coil generating electromagnetic effect, can draw
Armature is moved to coil direction, and normally closed switch disconnects, and as normally closed switch is located on the 3rd power transmission line, and then causes the 3rd transmission of electricity
The electric energy of line transmission is blocked.As the first power supply is provided to power-switching circuit by the first power transmission line and the second power transmission line
Electric energy, when the first power supply stops being input into electric energy to switching circuit, current vanishes in coil, the galvanomagnetic-effect that coil is produced
Disappear therewith, now coil stops traction armature, normally closed switch closure, now second source can pass through the 3rd power transmission line and the
Four power transmission lines export electric energy to switching circuit, and the electric energy of second source output can be flowed out by switching circuit, therefore, when the
After one power supply stops output electric energy, switching circuit is switched to second source from the first power supply, can continue as power-switching circuit
There is provided electric energy, it is ensured that power-switching circuit can be continuously obtained electric energy, and carry out electric energy conversion, under power-switching circuit
Trip circuit provides the electric energy after conversion, further, even if after a power supply stops output electric energy, due to depositing for switching circuit
Can also continue to obtain electric energy in, power-switching circuit, and electric energy is changed, then the electric energy after conversion is carried out defeated
Go out so that battery energy storage system can continue to work.
The third aspect, embodiments provides a kind of changing method, is applied to any one of first aspect switching system
In system, including：
First power supply and second source export electric energy respectively to switching circuit so that the line after having electric current to flow through in coil
Circle produces galvanomagnetic-effect；
The coil is producing armature described in galvanomagnetic-effect rear haulage, so that the normally closed switch being connected with the armature is disconnected
Open, the electric energy of the 3rd power line transmission is blocked；
First power supply passes through the first power transmission line and the second power transmission line and exports electric energy to power-switching circuit.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, also include：
First power supply stops exporting electric energy to the switching circuit so that the line after current vanishes in the coil
The galvanomagnetic-effect that circle is produced disappears；
The coil stops traction armature, so that the normally closed switch closure being connected with the armature, the 3rd power transmission line biography
Defeated electric energy conducting；
Wherein, the second source passes through the 3rd power transmission line and the 4th power transmission line to power-switching circuit output electric energy.
Fourth aspect, embodiments provides a kind of changing method, is applied to any one of first aspect switching system
In system, including：
First power supply stops exporting electric energy to switching circuit so that the electromagnetism that the coil is produced after current vanishes in coil
Effect disappears；
The coil stops traction armature, so that the normally closed switch closure being connected with the armature, the 3rd power transmission line biography
Defeated electric energy conducting；
Wherein, second source passes through the 3rd power transmission line and the 4th power transmission line to power-switching circuit output electric energy.
【Description of the drawings】
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area
For those of ordinary skill, without having to pay creative labor, can be with other attached according to these accompanying drawings acquisitions
Figure.
Fig. 1 is a kind of structural representation of switched system provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of switching circuit provided in an embodiment of the present invention.
【Specific embodiment】
In order to be better understood from technical scheme, below in conjunction with the accompanying drawings the embodiment of the present invention is retouched in detail
State.
It will be appreciated that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
The term for using in embodiments of the present invention is the purpose only merely for description specific embodiment, and is not intended to be limiting
The present invention." one kind ", " described " and " being somebody's turn to do " of singulative used in the embodiment of the present invention and appended claims
It is also intended to include most forms, unless context clearly shows that other implications.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation of description affiliated partner, represent
There may be three kinds of relations, for example, A and/or B can be represented：Individualism A, while there is A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent forward-backward correlation to liking a kind of relation of "or".
It will be appreciated that though power supply may be described using term first, second in embodiments of the present invention, but these electricity
Source should not necessarily be limited by these terms.These terms are only for power supply is distinguished from each other out.For example, without departing from embodiment of the present invention model
In the case of enclosing, the first power supply can also be referred to as second source, and similarly, second source can also be referred to as the first power supply.
Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when it is determined that when " or " in response to determine " or " when the detection (condition of statement
Or event) when " or " in response to detecting (condition or event of statement) ".
Embodiment one
A kind of switched system is embodiments provided, the battery energy storage system including power-switching circuit is arranged on
In, as shown in bold portion in Fig. 1, the switched system includes：
Switching circuit 11, the first end of the switching circuit 11 are connected with the first power supply 13, and the of the switching circuit 11
One end is also connected with second source 14；
The power-switching circuit 12, the power-switching circuit 12 are connected with the second end of the switching circuit 11.
Specifically, except including electronic control circuit is also included in addition to power-switching circuit, power supply turns in battery energy storage system
Change after circuit changed to electric energy, by the electrical energy transportation electron control circuit after conversion, electronic control circuit is using conversion
Electric energy work afterwards, realizes the control to battery energy storage system.
As shown in figure 1, the first power supply and second source can be input into electric energy to switching circuit respectively.Switching circuit can be
Switch between first power supply and second source, i.e., switching circuit can switch to second source from the first power supply, can be with
The first power supply is switched to from second source, i.e., the electric energy that there can only be a power supply output can be exported by switching circuit.Due to
Switching circuit is electrically connected with Power convert, and switching circuit can export a power supply to the electric energy of itself, further be conveyed to
Power-switching circuit, therefore power-switching circuit can only at a time get the electric energy that a power supply is provided, and to the electricity
Can be changed, then by the electrical energy transportation electron control circuit after conversion.
As the presence of switching circuit, a power supply stop to after switching circuit output electric energy, switching circuit can be switched to
On another power supply, now, another power supply to switching circuit export electric energy, so as to ensure that have in switching circuit it is lasting
Electric energy is exported, also, the electric energy of switching circuit output can flow to power-switching circuit, allow power-switching circuit persistently to electricity
Can be changed, and be exported electron control circuit, this improves the reliability that power-switching circuit persistently exports electric energy,
Simultaneously, it is ensured that electronic control circuit persistently can be controlled to battery energy storage system so that battery energy storage system can be held
Continuous work, improves the reliability of battery energy storage system continuous service.
For example, when the first power supply and second source export electric energy to switching circuit respectively, the output of only the first power supply
Electric energy can be then proceeded to flow to power-switching circuit by switching circuit, and now power-switching circuit is exported to the first power supply
Electric energy changed, and by after conversion electric energy output electron control circuit, it is ensured that electronic control circuit be in work shape
State, is controlled to battery energy storage system.After the first power supply stops exporting electric energy to switching circuit, switching circuit is electric from first
Source is switched to second source, and the electric energy of now second source output can arrive power-switching circuit by switching circuit output, i.e.,
First power supply stops to after switching circuit output electric energy, and switching circuit still can get electric energy from second source, now electricity
Power-switching circuit is changed to the electric energy that second source is exported, and the electric energy after conversion is exported electron control circuit, from
And ensure that and stop to after switching circuit output electric energy in the first power supply, power-switching circuit can also persistently export electric energy, carry
High power-switching circuit persistently exports the reliability of electric energy so that electronic control circuit still may be at working condition, to electricity
Pond energy-storage system is controlled, it is ensured that the normal work of battery energy storage system, and then improves battery energy storage system continuous service
Reliability.
In a specific embodiment, as shown in the bold portion in Fig. 2, the switching circuit 11 includes：Transmission of electricity
Line, the power transmission line include：First power transmission line L1, the second power transmission line L2, the 3rd power transmission line L3 and the 4th power transmission line L4；Described
The first end of one power transmission line L1 is connected with the positive pole of first power supply 13, the second end and the electricity of the first power transmission line L1
The positive pole connection of power-switching circuit 12；The first end of the second power transmission line L2 is connected with the negative pole of first power supply 13, institute
The second end for stating the second power transmission line L2 is connected with the negative pole of the power-switching circuit 12；The first end of the 3rd power transmission line L3
It is connected with the positive pole of the second source 14, second end of the 3rd power transmission line L3 and the positive pole of the power-switching circuit 12
Connection；The first end of the 4th power transmission line L4 is connected with the positive pole of the second source 14, and the of the 4th power transmission line L4
Two ends are connected with the negative pole of the power-switching circuit 12；The two ends of coil L, the coil L respectively with first power transmission line
L1 and the second power transmission line L2 connections；Normally closed switch Q, the two ends of the normally closed switch Q are connected with the 3rd power transmission line L3,
And the 3rd power transmission line L3 can be turned on by the normally closed switch Q；Armature XT, the armature XT positioned at the coil L and
Between the normally closed switch Q, and it is connected with the normally closed switch Q.
As shown in Fig. 2 specific, due to the first end of the first end and the second power transmission line of the first power transmission line it is electric all with first
The positive pole connection in source, the second end of the first power transmission line and the second end of the second power transmission line are all connected with power-switching circuit so that
First power supply and power-switching circuit are conductings, i.e. the first power supply can be to power-switching circuit conveying electric energy.3rd transmission of electricity
The first end of the first end of line and the 4th power transmission line is all connected with the positive pole of second source, second end and the 4th of the 3rd power transmission line
Second end of power transmission line is all connected with power-switching circuit so that second source and power-switching circuit are also conducting, i.e., the
Two power supplys can convey electric energy to power-switching circuit.
Also, as coil is connected with the first power transmission line and the second power transmission line respectively, in the first power supply to Power convert electricity
During road conveying electric energy, in coil, there is electric current to flow through, coil can produce galvanomagnetic-effect, due between coil and normally closed switch
There is armature, and the armature is connected with normally closed switch, after coil generating electromagnetic effect, armature can be drawn and moved to coil direction
Dynamic, normally closed switch disconnects, and as normally closed switch is located on the 3rd power transmission line, and then the electric energy of the 3rd power line transmission is hindered
It is disconnected.When the first power supply and second source export electric energy to switching circuit simultaneously, as the electric energy of the 3rd power line transmission is hindered
Break, therefore the electric energy of the first power supply output can be flowed out by switching circuit, and the electric energy of second source output can not be by cutting
Change circuit outflow.Further, after the electric energy of the first power supply output is exported to power-switching circuit by switching circuit, now
Power-switching circuit is changed to the electric energy that the first power supply is exported, and by the electric energy output electron control circuit after conversion,
Ensure that electronic control circuit is in running order, battery energy storage system is controlled.
As the first power supply is to provide electric energy to power-switching circuit by the first power transmission line and the second power transmission line, when the
When one power supply stops to switching circuit input electric energy, current vanishes in coil, the galvanomagnetic-effect that coil is produced also disappear therewith, this
When coil stop traction armature, normally closed switch closure, now second source can pass through the 3rd power transmission line and the 4th power transmission line to
Switching circuit exports electric energy, and the electric energy of second source output can be flowed out by switching circuit, therefore, when the first power supply stops
After output electric energy, switching circuit is switched to second source from the first power supply, can continue as power-switching circuit and provide electric energy, protect
Having demonstrate,proved power-switching circuit can persistently carry out electric energy conversion, and the electricity after conversion is provided to the circuit downstream of power-switching circuit
Can, further, as switching circuit is connected with two power supplys, therefore after a power supply stops output electric energy, switching circuit
Power supply can be switched over, get the power supply of another power supply output, and the electric energy is exported to power-switching circuit, institute
Can also continue to obtain electric energy with power-switching circuit, and electric energy is changed, then the electric energy after conversion is carried out defeated
Go out, persistently export the reliability of electric energy so as to improve power-switching circuit, and can be continued due to electronic control circuit
Get the electric energy of power-switching circuit output so that electronic control circuit can continue to be controlled battery energy storage system,
Ensure battery energy storage system can continuous firing, so as to improve the reliability of battery energy storage system continuous service.
Wherein, normally closed switch is in closure state in the case where any external force is not received.
In a specific embodiment, first power supply is AC power, and the second source is dc source；
Or, first power supply is AC power, and the second source is AC power.
For example：AC power can include：Power frequency AC, such as：The AC power that civil power is provided；Or, alternating current
Source can also include non-power frequency AC, the alternating current that the AC power or alternating current generator that such as photovoltaic system is provided is provided
Source.
For example：Dc source can include：The dc source that battery is provided, such as：Battery in battery energy storage system is provided
Dc source；Or, dc source can also be the dc source that the battery outside battery energy storage system is provided.
Wherein, when the first power supply and second source are AC power simultaneously, the first power supply and second source are not homology
The AC power that system or distinct device are provided, such as：When the first power supply is civil power, second source can be provided for alternating current generator
AC power；When the first power supply is to be designated AC power that an alternating current generator is provided, second source can be another
The AC power that one alternating current generator is provided.
Embodiment two
On the basis of embodiment one, a kind of switching circuit is embodiments provided, be applied in embodiment one
Switched system, as shown in the bold portion in Fig. 2, the switching circuit 11 includes：
Power transmission line, the power transmission line include：First power transmission line L1, the second power transmission line L2, the 3rd power transmission line L3 and the 4th are defeated
Electric wire L4；The first end of the first power transmission line L1 is connected with the positive pole of first power supply 13, the first power transmission line L1's
Second end is connected with the positive pole of the power-switching circuit 12；The first end of the second power transmission line L2 and first power supply 13
Negative pole connection, second end of the second power transmission line L2 is connected with the negative pole of the power-switching circuit 12；Described 3rd is defeated
The first end of electric wire L3 is connected with the positive pole of the second source 14, and the second end and the power supply of the 3rd power transmission line L3 turn
Change the positive pole connection of circuit 12；The first end of the 4th power transmission line L4 is connected with the positive pole of the second source 14, and described
Second end of four power transmission line L4 is connected with the negative pole of the power-switching circuit 12；The two ends of coil L, the coil L respectively with
The first power transmission line L1 and the second power transmission line L2 connections；Normally closed switch Q, the two ends of the normally closed switch Q and described
Three power transmission line L3 connect, and the 3rd power transmission line L3 can be turned on by the normally closed switch Q；Armature XT, the armature XT
Between the coil L and the normally closed switch Q, and it is connected with the normally closed switch Q.
In the embodiment of the present invention, explaining in detail referring to embodiment one with regard to switching circuit 11, in this not go into detail.
In embodiments of the present invention, the first end of the first end of the first power transmission line and the second power transmission line all with the first power supply
Positive pole connects, and the second end of the first power transmission line and the second end of the second power transmission line are all connected with power-switching circuit, so as to ensure
First power supply and power-switching circuit are conductings, i.e. the first power supply can convey electric energy to power-switching circuit.3rd is defeated
The first end of the first end of electric wire and the 4th power transmission line is all connected with the positive pole of second source, the 3rd power transmission line and the 4th power transmission line
The second end be all connected with power-switching circuit, so as to ensure that second source and power-switching circuit be conducting, i.e., second
Power supply can convey electric energy to power-switching circuit.As coil is connected with the first power transmission line and the second power transmission line respectively,
During one power supply conveys electric energy to power-switching circuit, in coil, there is electric current to flow through, coil can produce galvanomagnetic-effect, due to
There is armature between coil and normally closed switch, and the armature is connected with normally closed switch, after coil generating electromagnetic effect, can draw
Armature is moved to coil direction, and normally closed switch disconnects, and as normally closed switch is located on the 3rd power transmission line, and then causes the 3rd transmission of electricity
The electric energy of line transmission is blocked.As the first power supply is provided to power-switching circuit by the first power transmission line and the second power transmission line
Electric energy, when the first power supply stops being input into electric energy to switching circuit, current vanishes in coil, the galvanomagnetic-effect that coil is produced
Disappear therewith, now coil stops traction armature, normally closed switch closure, now second source can pass through the 3rd power transmission line and the
Four power transmission lines export electric energy to switching circuit, and the electric energy of second source output can be flowed out by switching circuit, therefore, when the
After one power supply stops output electric energy, switching circuit is switched to second source from the first power supply, can continue as power-switching circuit
There is provided electric energy, it is ensured that power-switching circuit can be continuously obtained electric energy, and carry out electric energy conversion, under power-switching circuit
Trip circuit provides the electric energy after conversion, further, even if after a power supply stops output electric energy, due to depositing for switching circuit
Can also continue to obtain electric energy in, power-switching circuit, and electric energy is changed, then the electric energy after conversion is carried out defeated
Go out so that battery energy storage system can continue to work.
Embodiment three
The operation principle before and after above-mentioned switched system realizes power supply switching is embodiments provided, including：
First power supply and second source export electric energy respectively to switching circuit so that the line after having electric current to flow through in coil
Circle produces galvanomagnetic-effect；The coil is producing armature described in galvanomagnetic-effect rear haulage, so that normal with what the armature was connected
Close and switch off, the electric energy of the 3rd power line transmission is blocked；First power supply passes through the first power transmission line and the second power transmission line
Electric energy is exported to power-switching circuit.
First power supply stops exporting electric energy to the switching circuit so that the line after current vanishes in the coil
The galvanomagnetic-effect that circle is produced disappears；The coil stops traction armature, so that the normally closed switch closure being connected with the armature,
The electric energy conducting of the 3rd power line transmission；Wherein, the second source passes through the 3rd power transmission line and the 4th power transmission line to power supply turn
Change circuit output electric energy.
In the embodiment of the present invention, operation principle when power supply switches is carried out with regard to switched system and is explained in detail referring to enforcement
Example one, this is no longer going to repeat them.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements done etc. are should be included within the scope of protection of the invention.
Claims (8)
1. a kind of switched system, it is characterised in that be arranged in the battery energy storage system including power-switching circuit, the switching
System includes：
Switching circuit, the first end of the switching circuit are connected with the first power supply, and the first end of the switching circuit is also with second
Power supply connects；
The power-switching circuit, the power-switching circuit are connected with the second end of the switching circuit.
2. switched system as claimed in claim 1, it is characterised in that the switching circuit includes：
Power transmission line, the power transmission line include：First power transmission line, the second power transmission line, the 3rd power transmission line and the 4th power transmission line；Described
The first end of one power transmission line is connected with the positive pole of first power supply, the second end and the Power convert of first power transmission line
The positive pole connection of circuit；The first end of second power transmission line is connected with the negative pole of first power supply, second power transmission line
The second end be connected with the negative pole of the power-switching circuit；The first end of the 3rd power transmission line is with the second source just
Pole connects, and the second end of the 3rd power transmission line is connected with the positive pole of the power-switching circuit；The of 4th power transmission line
One end is connected with the positive pole of the second source, and the second end of the 4th power transmission line is connected with the negative pole of the power-switching circuit
Connect；
Coil, the two ends of the coil are connected with first power transmission line and second power transmission line respectively；
Normally closed switch, the two ends of the normally closed switch are connected with the 3rd power transmission line, and the 3rd power transmission line can pass through
The normally closed switch conducting；
Armature, the armature are located between the coil and the normally closed switch, and are connected with the normally closed switch.
3. switched system as claimed in claim 2, it is characterised in that first power supply and the second source are respectively to institute
State switching circuit input electric energy.
4. switched system as claimed any one in claims 1 to 3, it is characterised in that
First power supply is AC power, and the second source is dc source；Or,
First power supply is AC power, and the second source is AC power.
5. a kind of switching circuit, it is characterised in that be applied in the switched system described in Claims 1-4, the switching electricity
Road includes：
Power transmission line, the power transmission line include：First power transmission line, the second power transmission line, the 3rd power transmission line and the 4th power transmission line；Described
The first end of one power transmission line is connected with the positive pole of first power supply, the second end and the Power convert of first power transmission line
The positive pole connection of circuit；The first end of second power transmission line is connected with the negative pole of first power supply, second power transmission line
The second end be connected with the negative pole of the power-switching circuit；The first end of the 3rd power transmission line is with the second source just
Pole connects, and the second end of the 3rd power transmission line is connected with the positive pole of the power-switching circuit；The of 4th power transmission line
One end is connected with the positive pole of the second source, and the second end of the 4th power transmission line is connected with the negative pole of the power-switching circuit
Connect；
Coil, the two ends of the coil are connected with first power transmission line and second power transmission line respectively；
Normally closed switch, the two ends of the normally closed switch are connected with the 3rd power transmission line, and the 3rd power transmission line can pass through
The normally closed switch conducting；
Armature, the armature are located between the coil and the normally closed switch, and are connected with the normally closed switch.
6. a kind of changing method, it is characterised in that be applied in the switched system described in Claims 1-4, including：
First power supply and second source export electric energy respectively to switching circuit so that have electric current to flow through the rear coil in coil and produce
Raw galvanomagnetic-effect；
The coil is in armature described in generation galvanomagnetic-effect rear haulage, so that the normally closed switch being connected with the armature is disconnected,
The electric energy of the 3rd power line transmission is blocked；
First power supply passes through the first power transmission line and the second power transmission line and exports electric energy to power-switching circuit.
7. method as claimed in claim 6, it is characterised in that also include：
First power supply stops exporting electric energy to the switching circuit so that in the coil, after current vanishes, the coil is produced
Raw galvanomagnetic-effect disappears；
The coil stops traction armature, so that the normally closed switch closure being connected with the armature, the 3rd power line transmission
Electric energy is turned on；
Wherein, the second source passes through the 3rd power transmission line and the 4th power transmission line to power-switching circuit output electric energy.
8. a kind of changing method, it is characterised in that be applied in the switched system described in Claims 1-4, including：
First power supply stops exporting electric energy to switching circuit so that the galvanomagnetic-effect that the coil is produced after current vanishes in coil
Disappear；
The coil stops traction armature, so that the normally closed switch closure being connected with the armature, the 3rd power line transmission
Electric energy is turned on；
Wherein, second source passes through the 3rd power transmission line and the 4th power transmission line to power-switching circuit output electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018360.XA CN106532910B (en) | 2016-11-18 | 2016-11-18 | Switching method, circuit and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018360.XA CN106532910B (en) | 2016-11-18 | 2016-11-18 | Switching method, circuit and system |
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| CN106532910A true CN106532910A (en) | 2017-03-22 |
| CN106532910B CN106532910B (en) | 2020-07-07 |
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| CN201611018360.XA Active CN106532910B (en) | 2016-11-18 | 2016-11-18 | Switching method, circuit and system |
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|---|---|
| CN106532910B (en) | 2020-07-07 |
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