CN109428386A - Standby power system - Google Patents
Standby power system Download PDFInfo
- Publication number
- CN109428386A CN109428386A CN201710773796.8A CN201710773796A CN109428386A CN 109428386 A CN109428386 A CN 109428386A CN 201710773796 A CN201710773796 A CN 201710773796A CN 109428386 A CN109428386 A CN 109428386A
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- Prior art keywords
- unit
- standby power
- charge
- electrically connected
- switch
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- 230000005611 electricity Effects 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000005669 field effect Effects 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 2
- 230000004913 activation Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 230000001939 inductive effect Effects 0.000 description 7
- 238000004134 energy conservation Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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- H02J7/0077—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
A kind of standby power system is powered for substituting main power source system in main power source system jam to load device, and standby power system includes main charge/discharge unit, is electrically connected to load device；Standby power unit is electrically connected to main charge/discharge unit, for being powered to the load device by main charge/discharge unit in main power source system jam；Charge/discharge unit is assisted, is electrically connected between Auxiliary Power Units and standby power unit；And control unit, it is electrically connected to standby power unit, Auxiliary Power Units and auxiliary charge/discharge unit, for whether detecting backup power source within a preset time without charge and discharge, and detect standby power unit within a preset time without charge and discharge when, control standby power unit by auxiliary charge/discharge unit charge to Auxiliary Power Units.Standby power system provided by the invention realizes the activation to the battery core in standby power unit, and then the service life of standby power unit can be improved.
Description
Technical field
The present invention relates to a kind of power circuit more particularly to a kind of standby power systems.
Background technique
The safety of electric system and stability are increasingly concerned, and various electrical equipments all be unable to do without reliable electricity
Source, if power-off suddenly during the work time, can bring great inconvenience to Working Life.It is caused in order to avoid powering off suddenly
The case where equipment stops working, common electrical equipment or electric system have design of the battery as backup power source, but
If be at present battery on the market for a long time under full power state, battery chemistries reaction will gradually inerting, when the date too long
Once occurring to have a power failure will be unable to complete the requirement of backup power source continued operation and cause equipment out of service.
Summary of the invention
In view of this, it is necessary to provide a kind of standby power system, in standby power unit for a long time without charge and discharge when,
It realizes the activation to the battery core in standby power unit, and then the service life of standby power unit can be improved.
The standby power system that embodiment of the present invention provides, for substituting the master in main power source system jam
Power-supply system is powered to load device, and the standby power system includes:
Main charge/discharge unit is electrically connected to the load device；
Standby power unit is electrically connected to the main charge/discharge unit, in the main power source system jam
When, it is powered by the main charge/discharge unit to the load device；
Charge/discharge unit is assisted, is electrically connected between the Auxiliary Power Units and the standby power unit；And
Control unit is electrically connected to the standby power unit, the Auxiliary Power Units and the auxiliary charge and discharge list
Member for whether detecting the backup power source within a preset time without charge and discharge, and is detecting the standby power unit
When within a preset time without charge and discharge, the standby power unit is controlled by the auxiliary charge/discharge unit to the auxiliary electricity
Source unit charges.
Optionally, described control unit is also used to detect the battery capacity of the standby power unit, and detecting
When stating the battery capacity of standby power unit and being down to preset value, controls the Auxiliary Power Units and pass through the auxiliary charge and discharge list
Member recharges the standby power unit.
Optionally, described control unit is also used to detect the battery capacity of the standby power unit, and detecting
When stating the battery capacity of standby power unit and being down to preset value, controls the standby power unit and stop to the accessory power supply list
Member charges.
Optionally, described control unit is also used to detect the voltage value of the standby power unit in the preset time
Inside whether change, and when detecting the voltage value and not changing in the preset time, determines described standby
With power supply unit without charge and discharge in the preset time.
Optionally, described control unit detects the voltage value of the standby power unit by I2C bus.
Optionally, the standby power unit includes reserve battery and the first protection circuit, institute's Auxiliary Power Units include
Boosting battery and the second protection circuit.
Optionally, the auxiliary charge/discharge unit is a step-up/step-down circuit, and the auxiliary charge/discharge unit includes:
First capacitor, one end are electrically connected to the anode of the reserve battery, and the other end is electrically connected to the reserve battery
Cathode；
Inductance, one end are electrically connected to one end of the first capacitor；
First switch tube, has control terminal, first end and second end, and the first end of the first switch tube is electrically connected to institute
The other end of inductance is stated, the second end of the first switch tube is electrically connected to the anode of the boosting battery, the first switch
The control terminal of pipe is electrically connected to described control unit；
First diode, the first diode are electrically connected to the first end and the first switch of the first switch tube
Between the second end of pipe；
Second capacitor, one end are electrically connected to the anode of the boosting battery, and the other end is electrically connected to the boosting battery
Cathode；
Second switch, has control terminal, first end and second end, and the first end of the second switch is electrically connected to institute
The other end of the second capacitor is stated, the second end of the second switch is electrically connected to the other end of the inductance, and described second opens
The control terminal for closing pipe is electrically connected to described control unit；And
Second diode, electricity practice grade in the second switch first end and the second switch second end it
Between.
Optionally, the first switch tube be triode perhaps the field-effect tube second switch be triode or
Field-effect tube.
Optionally, when the auxiliary charge/discharge unit is booster circuit, described control unit passes through the second switch
The control terminal control second switch of pipe is periodically on and off state, while passing through the first switch tube
Control terminal control the first switch tube and be in off state.
Optionally, when the auxiliary charge/discharge unit is reduction voltage circuit, described control unit passes through the second switch
The control terminal of pipe controls the second switch and is in off state, while controlling institute by the control terminal of the first switch tube
First switch tube is stated periodically to be on or off state.
Above-mentioned standby power system is controlled when standby power unit does not carry out charge and discharge for a long time by control unit
Standby power unit charges to Auxiliary Power Units, to realize the activation to the battery core in standby power unit, in turn
The service life of standby power unit can be improved, and when battery capacity is down to preset value in standby power unit, control is single
Member is recharged by control Auxiliary Power Units to standby power unit, and then can need emergency service in emergency situations
When, it still is able to provide specified electricity.
Detailed description of the invention
Fig. 1 is the applied environment figure of the standby power system in an embodiment of the present invention.
Fig. 2 is the functional block diagram of one embodiment of standby power system.
Fig. 3 is the circuit diagram of an embodiment of present invention auxiliary charge/discharge unit.
Fig. 4 is that the present invention assists equivalent circuit diagram of the charge/discharge unit as booster circuit when.
Fig. 5 a, 5b are that second switch is respectively at conducting and cuts when the present invention assists charge/discharge unit as booster circuit
Only equivalent circuit diagram when state.
Fig. 6 is that the present invention assists equivalent circuit diagram of the charge/discharge unit as reduction voltage circuit when.
Fig. 7 a, 7b are that first switch tube is respectively at conducting and cuts when the present invention assists charge/discharge unit as reduction voltage circuit
Only equivalent circuit diagram when state.
Main element symbol description
| Power-supply system | 100 |
| Standby power system | 1 |
| Main power source system | 2 |
| Switching circuit | 3 |
| Load device | 4 |
| Main charge/discharge unit | 10 |
| Standby power unit | 20 |
| Reserve battery | 21 |
| First protection circuit | 22 |
| Control unit | 30 |
| Auxiliary Power Units | 40 |
| Boosting battery | 41 |
| Second protection circuit | 42 |
| Assist charge/discharge unit | 50 |
| First capacitor | C1 |
| Inductance | L |
| First switch tube | Q1 |
| First diode | D1 |
| Second capacitor | C2 |
| Second switch | Q2 |
| Second diode | D2 |
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Referring to Fig. 1, Fig. 1 is the applied environment figure of the standby power system 1 in an embodiment of the present invention.In this implementation
In example, which is applied in power-supply system 100, which includes standby power system 1, main power source
System 2 and switching circuit 3.In the present embodiment, switching circuit 3 for detect main power source system 2 whether break down and
Switch mains power system 2 or standby power system 1 are powered load device 4.When switching circuit 3 detects main power source system
When 2 normal work, for example, determining main electricity when switching circuit 3 detects the supply voltage of main power source system 2 as in normal range (NR)
Source system 2 works normally, then main power source system 2 is powered through the switching circuit 3 to load device 4；When switching circuit 3 is detected
When breaking down to main power source system 2, for example, switching circuit 3 detects the supply voltage of main power source system 2 not in normal range (NR)
Interior, then cut-in stand-by power-supply system 1 is substituted main power source system 2 and is powered to load device 4 by switching circuit 3, so that load
When main power source system 2 breaks down, load device 4 still can work on device 4.
Referring to Fig. 2, Fig. 2 is the functional block diagram of the standby power system 1 in an embodiment of the present invention.The standby electricity
Source system 1 is used to substitute main power source system when main power source system (not shown) breaks down and be powered to load device 4.?
In present embodiment, standby power system 1 includes main charge/discharge unit 10, standby power unit 20, control unit 30, auxiliary electricity
Source unit 40 and auxiliary charge/discharge unit 50.
Main charge/discharge unit 10, is electrically connected to standby power unit 20.In the present embodiment, which is
One charge-discharge circuit, the charge-discharge circuit are existing charge-discharge circuit.When standby power unit 20 needs to charge, peripheral hardware electricity
It is charged by the main charge/discharge unit 10 to standby power unit 20 in source；When main power source system 2 breaks down, standby electricity
Source unit 20 is powered by the main charge/discharge unit 10 to load device 4.In one embodiment, which wraps
Reserve battery 21 and the first protection circuit 22 are included, which is overheating protection circuit or overload protecting circuit.
Charge/discharge unit 50 is assisted, is electrically connected between Auxiliary Power Units 40 and standby power unit 20.In this implementation
In mode, which is also a charge-discharge circuit, the composition of auxiliary charge/discharge unit embodiment below
In will be described in greater detail.In one embodiment, which includes 41 grade of second protection circuit of boosting battery
42, which is overheating protection circuit or overload protecting circuit.
Control unit 30 is electrically connected to standby power unit 20 and Auxiliary Power Units 40, for detecting backup power source list
Whether member 20 is within a preset time without charge and discharge, and is detecting standby power unit 20 within a preset time without charge and discharge
When, control standby power unit 20 is by assisting charge/discharge unit 50 to charge Auxiliary Power Units 40.When described default
Between can for system default setting time, or user according to actual needs customized setting time, for example, institute
Preset time is stated to be set as 10 days.In the present embodiment, control unit 30 can detect backup power source list by timer
Whether member 20 is within a preset time without charge and discharge, when control unit 30 has detecting standby power unit 20 within a preset time
When carrying out charge and discharge, then timing that timer is zeroed again is needed.
In one embodiment, control unit 30 can be by detecting the voltage value of standby power unit 20 described default
Whether whether changed mode determines the standby power unit 20 within a preset time without charge and discharge in time.Control unit
30 when detecting the voltage value and not changing in the preset time, determine 20 yuan of backup power source list described default
Without charge and discharge in time；Control unit 30 changes detecting the voltage value in the preset time, determines spare
20 yuan of power supply list have charge and discharge in the preset time.In the present embodiment, control unit 30 is detecting the voltage value
When, the voltage value of standby power unit 20 can be detected by I2C bus.Certainly, in other embodiment of the invention, may be used
To take the voltage value, such as spi bus, UART bus etc. of other way detecting standby power unit 20.
Control unit 30 is also used to detect the battery capacity of standby power unit 20, and is detecting standby power unit
When 20 battery capacity is down to preset value, the control stopping of standby power unit 20 charges to Auxiliary Power Units 40, that is, controls
System control standby power unit 20 stops electric discharge.In the present embodiment, control unit 30 is logical in control standby power unit 20
While crossing auxiliary charge/discharge unit 50 and charge to Auxiliary Power Units 40, the battery of standby power unit 20 can be also detected
Capacity.As standby power unit 20 charges to Auxiliary Power Units 40, the battery capacity of standby power unit 20 will
Decline will control backup power source list when the battery capacity that control unit 30 detects standby power unit 20 is down to preset value
Member 20 stops charging to Auxiliary Power Units 40.In the present embodiment, the preset value is preferably battery capacity
70%, when battery capacity is stored in 70% or so, battery can be extended.
Control unit 30 is also used to detect the battery capacity of standby power unit 20, and is detecting standby power unit
When 20 battery capacity is down to preset value, control Auxiliary Power Units 40 are by auxiliary charge/discharge unit 50 to standby power unit
20 are recharged.In the present embodiment, when standby power unit 20 charges to Auxiliary Power Units 40, work as standby electricity
When the battery capacity of source unit 20 is down to preset value, in order to guarantee standby power unit 20 in main power source system jam,
Standby power unit 20 can also provide expected electricity and supply electricity to load device 4, and control unit 30 is needed in standby power unit
When 20 battery capacity is down to preset value, control Auxiliary Power Units 40 are by auxiliary charge/discharge unit 50 to standby power unit
20 are recharged, until standby power unit 20 is fully charged, to guarantee that standby power unit 20 has sufficient electricity.
Referring to Fig. 3, Fig. 3 is the circuit diagram of an embodiment of present invention auxiliary charge/discharge unit 50.
In the present embodiment, auxiliary charge/discharge unit 40 is a step-up/step-down circuit, and auxiliary charge/discharge unit 40 includes the
One capacitor C1, inductance L, first switch tube Q1, first diode D1, the second capacitor C2, second switch Q2 and the second diode
D2, wherein first switch tube Q1 and second switch Q2 all have control terminal, first end and second end.The one of first capacitor C1
End is electrically connected to the anode of reserve battery, and the other end of first capacitor C1 is electrically connected to the cathode of reserve battery.One end of inductance L
It is electrically connected to one end of first capacitor C1, the other end of inductance L is electrically connected to the first end of first switch tube Q1.First switch tube
The second end of Q1 is electrically connected to the anode of boosting battery, and the control terminal of first switch tube Q1 is electrically connected to control unit 30.First
Diode D1 is electrically connected between the first end of first switch tube Q1 and the second end of first switch tube Q1.The one of second capacitor C2
End is electrically connected to the anode of boosting battery, and the other end of the second capacitor C2 is electrically connected to the boosting battery cathode.Second switch
The first end of pipe Q2 is electrically connected to the other end of the second capacitor C2, and the second end of second switch Q2 is electrically connected to the another of inductance L
One end, the control terminal of second switch Q2 are electrically connected to control unit 30.Second diode D2 is electrically connected to second switch Q2
First end and second switch Q2 second end between.In the present embodiment, first switch tube Q1 and second switch Q2 be all
It can be triode or field-effect tube, the first switch tube Q1 and second switch Q2 in present embodiment are all with N-channel MOS
For pipe.
When assisting charge/discharge unit 50 as booster circuit, control unit 30 passes through the control terminal control of second switch Q2
Second switch Q2 processed is periodically on and off state, believes for example, control unit 30 sends the pulse that duty ratio is a
Number to second switch Q2 control terminal control second switch Q2 be in the previous time period t1 in a cycle T
State, the interior off state, or control second switch Q2 of being in of the latter time period t 2 in one cycle is in a week
It is in the conductive state in off state, the latter time period t 2 in one cycle in previous time period t1 in phase,
Wherein, T=t1+t2.Control unit 30 is on or when off state controlling second switch Q2, while passing through first
The control terminal control first switch tube Q1 of switching tube Q1 is in off state.It is described in detail below when auxiliary charge/discharge unit 50 is made
Working principle when for booster circuit.
It is the equivalent circuit diagram for assisting charge/discharge unit 50 as booster circuit when referring to Fig. 4, Fig. 4.When auxiliary charge and discharge
Unit 50 is operated in boost mode, at this point, only second switch Q2 has a movement for doing switching, and first switch tube Q1
It is then the state for being constantly in cut-off.
When second switch Q2 is in the conductive state in the previous time period t1 in a cycle T, first diode
D1 cut-off, input power is equal to low-pressure side input voltage Vlow to inductance L energy storage, inductance L voltage VL at this time, and inductive current is held
Continuous to increase, it is as shown in Figure 5 a that electric current flows through path.
When second switch Q2 is in off state in the latter time period t2 in a cycle T, inductive current makes
First diode D1 conducting is obtained, at this point, it is Vlow-V0 (V0 that inductance L, which starts to release energy to load Load, inductive drop VL,
For the voltage for loading the both ends Load).It is as shown in Figure 5 b that its electric current flows through path.
By voltage-second balance formula it can be seen that within the period inductance energy conservation, as shown in formula 4-1:
It is decomposable by (4-1)
T1*Vlow+ (t2-t1) * (Vlow-V0)=0 (4-3) is obtained by (4-2) again
Relationship is as follows between its output voltage and low-pressure side input voltage:
Wherein, D is second switch Q2 one
Turn-on time accounting in a cycle T.(4-4)
When assisting charge/discharge unit 50 as reduction voltage circuit, control unit 30 passes through the control terminal control of first switch tube Q1
First switch tube Q1 processed is periodically on and off state, believes for example, control unit 30 sends the pulse that duty ratio is b
Number to first switch tube Q1 control terminal control first switch tube Q1 be in the previous time period t1 in a cycle T
State, the interior off state, or control first switch tube Q1 of being in of the latter time period t 2 in one cycle is in a week
It is in the conductive state in off state, the latter time period t 2 in one cycle in previous time period t1 in phase,
Wherein, T=t1+t2.Control unit 30 is on or when off state controlling first switch tube Q1, while passing through second
The control terminal control second switch Q1 of switching tube Q2 is in off state.It is described in detail below when auxiliary charge/discharge unit 50 is made
Working principle when for reduction voltage circuit.
It is the equivalent circuit diagram for assisting charge/discharge unit 50 as reduction voltage circuit when referring to Fig. 6, Fig. 6.When auxiliary charge and discharge
Unit 50 is operated in decompression mode, at this point, only first switch tube Q1 has a movement for doing switching, and second switch Q2
It is then the state for being constantly in cut-off.
When first switch tube Q1 is in the conductive state in the previous time period t1 in a cycle T, the second diode
D2 cut-off, input power directly supplies energy to load Load at this time, and inductive drop inductance VL is equal to VHigh-V0 (V0 load
The voltage at the both ends Load), and inductive current continues to increase, it is as shown in Figure 7a that electric current flows through path.
When first switch tube Q1 is in off state in the latter time period t2 in a cycle T, inductive current makes
The second diode D2 conducting is obtained, at this point, inductance L, which starts to release energy, gives load Load, inductive drop VL is-V0 at this time.Its electricity
Stream flows through path as shown in 7b.
By voltage-second balance formula it can be seen that within the period inductance energy conservation, as shown in formula 6-1:
It is decomposable by (6-1)
T1 (VHigh-V0)+(t2-t1) (- V0)=0 (6-3) is obtained by (6-2) again
Relationship is as follows between its output voltage and low-pressure side input voltage:
High=D High, wherein D is first switch tube Q1 in a cycle T
Turn-on time accounting.(6-4)
Relative to existing standby power system, standby power system in the embodiment of the present invention, in standby power unit
When not carrying out charge and discharge for a long time, standby power unit is controlled by control unit and is charged to Auxiliary Power Units, thus
It realizes the activation to the battery core in standby power unit, and then the service life of standby power unit can be improved, and spare
When battery capacity is down to preset value in power supply unit, control unit is carried out by control Auxiliary Power Units to standby power unit
It recharges, and then can still be able to provide specified electricity when emergency situations need emergency service.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement, without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. a kind of standby power system, for substituting the main power source system in main power source system jam to load device
It is powered, which is characterized in that the standby power system includes:
Main charge/discharge unit is electrically connected to the load device；
Standby power unit is electrically connected to the main charge/discharge unit, for passing through in the main power source system jam
The main charge/discharge unit is powered to the load device；
Charge/discharge unit is assisted, is electrically connected between the Auxiliary Power Units and the standby power unit；And
Control unit is electrically connected to the standby power unit, the Auxiliary Power Units and the auxiliary charge/discharge unit, uses
In the detecting backup power source within a preset time whether without charge and discharge, and the standby power unit is being detected default
When in the time without charge and discharge, the standby power unit is controlled by the auxiliary charge/discharge unit to the Auxiliary Power Units
It charges.
2. standby power system as described in claim 1, which is characterized in that described control unit is also used to detect described standby
With the battery capacity of power supply unit, and when the battery capacity for detecting the standby power unit is down to preset value, institute is controlled
Auxiliary Power Units are stated to recharge the standby power unit by the auxiliary charge/discharge unit.
3. standby power system as described in claim 1, which is characterized in that described control unit is also used to detect described standby
With the battery capacity of power supply unit, and when the battery capacity for detecting the standby power unit is down to preset value, institute is controlled
Standby power unit stopping is stated to charge to the Auxiliary Power Units.
4. standby power system as described in claim 1, which is characterized in that described control unit is also used to detect described standby
Whether changed in the preset time with the voltage value of power supply unit, and is detecting the voltage value described pre-
If do not change in the time, determine the standby power unit in the preset time without charge and discharge.
5. standby power system as claimed in claim 4, which is characterized in that described control unit detects institute by I2C bus
State the voltage value of standby power unit.
6. power backup power-supply system as claimed in claim 5, which is characterized in that the standby power unit includes standby electricity
Pond and the first protection circuit, institute's Auxiliary Power Units include boosting battery and the second protection circuit.
7. standby power system as claimed in claim 6, the auxiliary charge/discharge unit is a step-up/step-down circuit, the auxiliary
Charge/discharge unit includes:
First capacitor, one end are electrically connected to the anode of the reserve battery, and the other end is electrically connected to the cathode of the reserve battery；
Inductance, one end are electrically connected to one end of the first capacitor；
First switch tube, has control terminal, first end and second end, and the first end of the first switch tube is electrically connected to the electricity
The other end of sense, the second end of the first switch tube are electrically connected to the anode of the boosting battery, the first switch tube
Control terminal is electrically connected to described control unit；
First diode, the first diode are electrically connected to the first end and the first switch tube of the first switch tube
Between second end；
Second capacitor, one end are electrically connected to the anode of the boosting battery, and the other end is electrically connected to the cathode of the boosting battery；
Second switch, has control terminal, first end and second end, and the first end of the second switch is electrically connected to described the
The other end of two capacitors, the second end of the second switch are electrically connected to the other end of the inductance, the second switch
Control terminal be electrically connected to described control unit；And
Second diode, electricity practice grade between the first end of the second switch and the second end of the second switch.
8. standby power system as claimed in claim 7, which is characterized in that the first switch tube is that triode or field are imitated
Ying Guan, the second switch are triode or field-effect tube.
9. standby power system as claimed in claim 7, which is characterized in that when the auxiliary charge/discharge unit is booster circuit
When, described control unit by the control terminal of the second switch control the second switch be periodically on and
Off state, while the first switch tube is controlled by the control terminal of the first switch tube and is in off state.
10. standby power system as claimed in claim 7, which is characterized in that when the auxiliary charge/discharge unit is decompression electricity
Lu Shi, described control unit control the second switch by the control terminal of the second switch and are in off state, together
When the first switch tube controlled by the control terminal of the first switch tube be periodically on or off state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Address after: 201613 No. 1925, Nanle Road, Songjiang Industrial Zone, Songjiang District, Shanghai Applicant after: Fulian Guoji (Shanghai) Electronics Co.,Ltd. Address before: 201613 Shanghai Songjiang District Songjiang Export Processing Zone South Le road 1925 Applicant before: Ambit Microsystems (Shanghai) Ltd. |
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Application publication date: 20190305 |